mirror of
https://github.com/MariaDB/server.git
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791 lines
25 KiB
Text
791 lines
25 KiB
Text
create table t1 (a int, b int) engine=MyISAM;
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create table t2 (c int, d int) engine=MyISAM;
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insert into t1 values (1,1),(2,2),(3,3),(2,2),(4,4),(4,4),(4,4);
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insert into t2 values (1,1),(1,1),(1,1),(2,2),(3,3),(3,3),(5,5);
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select * from t1 except select * from t2;
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a b
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4 4
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select * from t1 except all select * from t2;
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a b
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4 4
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2 2
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4 4
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4 4
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select * from t1 except all select c+1,d+1 from t2;
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a b
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1 1
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4 4
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(select * from t1) except all (select * from t2);
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a b
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4 4
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2 2
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4 4
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4 4
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select * from ((select * from t1) except all (select * from t2)) a;
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a b
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4 4
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2 2
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4 4
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4 4
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select * from ((select a from t1) except all (select c from t2)) a;
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a
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4
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2
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4
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4
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select * from t1 except all select * from t1 union all select * from t1 union all select * from t1 except select * from t2;
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a b
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4 4
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select * from t1 except all select * from t1 union all select * from t1 union all select * from t1 except all select * from t2;
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a b
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4 4
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2 2
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4 4
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4 4
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4 4
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4 4
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4 4
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2 2
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2 2
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select * from (select * from t1 except all select * from t2) q1 except all select * from (select * from t1 except all select * from t2) q2;
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a b
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EXPLAIN select * from t1 except all select * from t2;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 7
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2 EXCEPT t2 ALL NULL NULL NULL NULL 7
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NULL EXCEPT RESULT <except1,2> ALL NULL NULL NULL NULL NULL
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EXPLAIN format=json select * from t1 except all select * from t2;
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EXPLAIN
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{
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"query_block": {
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"union_result": {
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"table_name": "<except1,2>",
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"access_type": "ALL",
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"query_specifications": [
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{
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"query_block": {
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"select_id": 1,
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"nested_loop": [
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{
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"table": {
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"table_name": "t1",
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"access_type": "ALL",
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"rows": 7,
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"filtered": 100
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}
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}
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]
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}
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},
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{
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"query_block": {
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"select_id": 2,
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"operation": "EXCEPT",
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"nested_loop": [
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{
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"table": {
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"table_name": "t2",
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"access_type": "ALL",
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"rows": 7,
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"filtered": 100
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}
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}
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]
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}
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}
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]
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}
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}
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}
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EXPLAIN extended (select * from t1) except all (select * from t2);
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 7 100.00
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2 EXCEPT t2 ALL NULL NULL NULL NULL 7 100.00
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NULL EXCEPT RESULT <except1,2> ALL NULL NULL NULL NULL NULL NULL
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Warnings:
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Note 1003 (/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) except all (/* select#2 */ select `test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2`)
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EXPLAIN extended select * from ((select * from t1) except all (select * from t2)) a;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <derived2> ALL NULL NULL NULL NULL 7 100.00
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2 DERIVED t1 ALL NULL NULL NULL NULL 7 100.00
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3 EXCEPT t2 ALL NULL NULL NULL NULL 7 100.00
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NULL EXCEPT RESULT <except2,3> ALL NULL NULL NULL NULL NULL NULL
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Warnings:
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Note 1003 /* select#1 */ select `a`.`a` AS `a`,`a`.`b` AS `b` from ((/* select#2 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) except all (/* select#3 */ select `test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2`)) `a`
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ANALYZE format=json select * from ((select a,b from t1) except all (select c,d from t2)) a;
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ANALYZE
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{
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"query_optimization": {
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"r_total_time_ms": "REPLACED"
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},
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"nested_loop": [
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{
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"table": {
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"table_name": "<derived2>",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 7,
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"r_rows": 4,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"filtered": 100,
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"r_filtered": 100,
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"materialized": {
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"query_block": {
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"union_result": {
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"table_name": "<except2,3>",
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"access_type": "ALL",
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"r_loops": 1,
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"r_rows": 4,
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"query_specifications": [
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{
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"query_block": {
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"select_id": 2,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"nested_loop": [
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{
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"table": {
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"table_name": "t1",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 7,
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"r_rows": 7,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 100
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}
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}
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]
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}
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},
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{
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"query_block": {
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"select_id": 3,
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"operation": "EXCEPT",
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"nested_loop": [
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{
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"table": {
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"table_name": "t2",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 7,
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"r_rows": 7,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 100
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}
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}
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]
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}
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}
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]
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}
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}
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}
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}
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}
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]
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}
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}
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ANALYZE format=json select * from ((select a from t1) except all (select c from t2)) a;
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ANALYZE
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{
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"query_optimization": {
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"r_total_time_ms": "REPLACED"
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},
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"nested_loop": [
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{
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"table": {
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"table_name": "<derived2>",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 7,
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"r_rows": 4,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"filtered": 100,
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"r_filtered": 100,
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"materialized": {
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"query_block": {
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"union_result": {
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"table_name": "<except2,3>",
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"access_type": "ALL",
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"r_loops": 1,
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"r_rows": 4,
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"query_specifications": [
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{
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"query_block": {
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"select_id": 2,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"nested_loop": [
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{
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"table": {
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"table_name": "t1",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 7,
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"r_rows": 7,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 100
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}
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}
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]
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}
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},
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{
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"query_block": {
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"select_id": 3,
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"operation": "EXCEPT",
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"nested_loop": [
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{
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"table": {
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"table_name": "t2",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 7,
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"r_rows": 7,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 100
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}
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}
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]
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}
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}
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]
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}
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}
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}
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}
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}
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]
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}
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}
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select * from ((select a from t1) except all (select c from t2)) a;
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a
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4
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2
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4
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4
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prepare stmt from "(select a,b from t1) except all (select c,d from t2)";
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execute stmt;
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a b
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4 4
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2 2
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4 4
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4 4
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execute stmt;
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a b
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4 4
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2 2
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4 4
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4 4
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prepare stmt from "select * from ((select a,b from t1) except all (select c,d from t2)) a";
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execute stmt;
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a b
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4 4
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2 2
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4 4
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4 4
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execute stmt;
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a b
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4 4
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2 2
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4 4
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4 4
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drop tables t1,t2;
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create table t1 (a int, b int) engine=MyISAM;
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create table t2 (c int, d int) engine=MyISAM;
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create table t3 (e int, f int) engine=MyISAM;
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create table t4 (g int, h int) engine=MyISAM;
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insert into t1 values (1,1),(2,2),(2,2);
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insert into t2 values (2,2),(3,3);
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insert into t3 values (4,4),(5,5),(4,4);
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insert into t4 values (4,4),(7,7),(4,4);
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(select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4);
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a b e f
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1 1 4 4
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2 2 4 4
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1 1 5 5
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2 2 5 5
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1 1 4 4
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2 2 4 4
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2 2 5 5
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select * from ((select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4)) t;
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a b e f
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1 1 4 4
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2 2 4 4
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1 1 5 5
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2 2 5 5
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1 1 4 4
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2 2 4 4
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2 2 5 5
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(select * from t1,t3) except all (select * from t2,t4);
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a b e f
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1 1 4 4
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2 2 4 4
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1 1 5 5
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2 2 5 5
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1 1 4 4
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2 2 4 4
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2 2 5 5
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(select a,b,e from t1,t3) except all (select c,d,g from t2,t4);
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a b e
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1 1 4
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2 2 4
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1 1 5
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2 2 5
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1 1 4
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2 2 4
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2 2 5
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EXPLAIN (select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL 3
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1 PRIMARY t3 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join)
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2 EXCEPT t2 ALL NULL NULL NULL NULL 2
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2 EXCEPT t4 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join)
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NULL EXCEPT RESULT <except1,2> ALL NULL NULL NULL NULL NULL
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EXPLAIN select * from ((select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4)) t;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY <derived2> ALL NULL NULL NULL NULL 9
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2 DERIVED t1 ALL NULL NULL NULL NULL 3
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2 DERIVED t3 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join)
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3 EXCEPT t2 ALL NULL NULL NULL NULL 2
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3 EXCEPT t4 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join)
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NULL EXCEPT RESULT <except2,3> ALL NULL NULL NULL NULL NULL
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EXPLAIN extended select * from ((select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4)) t;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 PRIMARY <derived2> ALL NULL NULL NULL NULL 9 100.00
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2 DERIVED t1 ALL NULL NULL NULL NULL 3 100.00
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2 DERIVED t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
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3 EXCEPT t2 ALL NULL NULL NULL NULL 2 100.00
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3 EXCEPT t4 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
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NULL EXCEPT RESULT <except2,3> ALL NULL NULL NULL NULL NULL NULL
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Warnings:
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Note 1003 /* select#1 */ select `t`.`a` AS `a`,`t`.`b` AS `b`,`t`.`e` AS `e`,`t`.`f` AS `f` from ((/* select#2 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t3`.`e` AS `e`,`test`.`t3`.`f` AS `f` from `test`.`t1` join `test`.`t3`) except all (/* select#3 */ select `test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d`,`test`.`t4`.`g` AS `g`,`test`.`t4`.`h` AS `h` from `test`.`t2` join `test`.`t4`)) `t`
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EXPLAIN format=json select * from ((select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4)) t;
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EXPLAIN
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{
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"query_block": {
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"select_id": 1,
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"nested_loop": [
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{
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"table": {
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"table_name": "<derived2>",
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"access_type": "ALL",
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"rows": 9,
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"filtered": 100,
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"materialized": {
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"query_block": {
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"union_result": {
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"table_name": "<except2,3>",
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"access_type": "ALL",
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"query_specifications": [
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{
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"query_block": {
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"select_id": 2,
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"nested_loop": [
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{
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"table": {
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"table_name": "t1",
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"access_type": "ALL",
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"rows": 3,
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"filtered": 100
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}
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},
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{
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"block-nl-join": {
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"table": {
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"table_name": "t3",
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"access_type": "ALL",
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"rows": 3,
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"filtered": 100
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},
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"buffer_type": "flat",
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"buffer_size": "119",
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"join_type": "BNL"
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}
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}
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]
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}
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},
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{
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"query_block": {
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"select_id": 3,
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"operation": "EXCEPT",
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"nested_loop": [
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{
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"table": {
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"table_name": "t2",
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"access_type": "ALL",
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"rows": 2,
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"filtered": 100
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}
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},
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{
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"block-nl-join": {
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"table": {
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"table_name": "t4",
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"access_type": "ALL",
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"rows": 3,
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"filtered": 100
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},
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"buffer_type": "flat",
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"buffer_size": "119",
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"join_type": "BNL"
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}
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}
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]
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}
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}
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]
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}
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}
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}
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}
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}
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]
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}
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}
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ANALYZE format=json (select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4);
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ANALYZE
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{
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"query_optimization": {
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"r_total_time_ms": "REPLACED"
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},
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"query_block": {
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"union_result": {
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"table_name": "<except1,2>",
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"access_type": "ALL",
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"r_loops": 1,
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"r_rows": 7,
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"query_specifications": [
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{
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"query_block": {
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"select_id": 1,
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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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"nested_loop": [
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{
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"table": {
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"table_name": "t1",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 3,
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"r_rows": 3,
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"r_table_time_ms": "REPLACED",
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"r_other_time_ms": "REPLACED",
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"r_engine_stats": REPLACED,
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"filtered": 100,
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"r_filtered": 100
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}
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},
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{
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"block-nl-join": {
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"table": {
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"table_name": "t3",
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"access_type": "ALL",
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"r_loops": 1,
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"rows": 3,
|
|
"r_rows": 3,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
},
|
|
"buffer_type": "flat",
|
|
"buffer_size": "119",
|
|
"join_type": "BNL",
|
|
"r_loops": 3,
|
|
"r_filtered": 100,
|
|
"r_unpack_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_effective_rows": 3
|
|
}
|
|
}
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"operation": "EXCEPT",
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"nested_loop": [
|
|
{
|
|
"table": {
|
|
"table_name": "t2",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 2,
|
|
"r_rows": 2,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
}
|
|
},
|
|
{
|
|
"block-nl-join": {
|
|
"table": {
|
|
"table_name": "t4",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 3,
|
|
"r_rows": 3,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
},
|
|
"buffer_type": "flat",
|
|
"buffer_size": "119",
|
|
"join_type": "BNL",
|
|
"r_loops": 2,
|
|
"r_filtered": 100,
|
|
"r_unpack_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_effective_rows": 3
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
ANALYZE format=json select * from ((select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4)) t;
|
|
ANALYZE
|
|
{
|
|
"query_optimization": {
|
|
"r_total_time_ms": "REPLACED"
|
|
},
|
|
"query_block": {
|
|
"select_id": 1,
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"nested_loop": [
|
|
{
|
|
"table": {
|
|
"table_name": "<derived2>",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 9,
|
|
"r_rows": 7,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"filtered": 100,
|
|
"r_filtered": 100,
|
|
"materialized": {
|
|
"query_block": {
|
|
"union_result": {
|
|
"table_name": "<except2,3>",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"r_rows": 7,
|
|
"query_specifications": [
|
|
{
|
|
"query_block": {
|
|
"select_id": 2,
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"nested_loop": [
|
|
{
|
|
"table": {
|
|
"table_name": "t1",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 3,
|
|
"r_rows": 3,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
}
|
|
},
|
|
{
|
|
"block-nl-join": {
|
|
"table": {
|
|
"table_name": "t3",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 3,
|
|
"r_rows": 3,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
},
|
|
"buffer_type": "flat",
|
|
"buffer_size": "119",
|
|
"join_type": "BNL",
|
|
"r_loops": 3,
|
|
"r_filtered": 100,
|
|
"r_unpack_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_effective_rows": 3
|
|
}
|
|
}
|
|
]
|
|
}
|
|
},
|
|
{
|
|
"query_block": {
|
|
"select_id": 3,
|
|
"operation": "EXCEPT",
|
|
"r_loops": 1,
|
|
"r_total_time_ms": "REPLACED",
|
|
"nested_loop": [
|
|
{
|
|
"table": {
|
|
"table_name": "t2",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 2,
|
|
"r_rows": 2,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
}
|
|
},
|
|
{
|
|
"block-nl-join": {
|
|
"table": {
|
|
"table_name": "t4",
|
|
"access_type": "ALL",
|
|
"r_loops": 1,
|
|
"rows": 3,
|
|
"r_rows": 3,
|
|
"r_table_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_engine_stats": REPLACED,
|
|
"filtered": 100,
|
|
"r_filtered": 100
|
|
},
|
|
"buffer_type": "flat",
|
|
"buffer_size": "119",
|
|
"join_type": "BNL",
|
|
"r_loops": 2,
|
|
"r_filtered": 100,
|
|
"r_unpack_time_ms": "REPLACED",
|
|
"r_other_time_ms": "REPLACED",
|
|
"r_effective_rows": 3
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
prepare stmt from "(select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4)";
|
|
execute stmt;
|
|
a b e f
|
|
1 1 4 4
|
|
2 2 4 4
|
|
1 1 5 5
|
|
2 2 5 5
|
|
1 1 4 4
|
|
2 2 4 4
|
|
2 2 5 5
|
|
execute stmt;
|
|
a b e f
|
|
1 1 4 4
|
|
2 2 4 4
|
|
1 1 5 5
|
|
2 2 5 5
|
|
1 1 4 4
|
|
2 2 4 4
|
|
2 2 5 5
|
|
prepare stmt from "select * from ((select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4)) a";
|
|
execute stmt;
|
|
a b e f
|
|
1 1 4 4
|
|
2 2 4 4
|
|
1 1 5 5
|
|
2 2 5 5
|
|
1 1 4 4
|
|
2 2 4 4
|
|
2 2 5 5
|
|
execute stmt;
|
|
a b e f
|
|
1 1 4 4
|
|
2 2 4 4
|
|
1 1 5 5
|
|
2 2 5 5
|
|
1 1 4 4
|
|
2 2 4 4
|
|
2 2 5 5
|
|
drop tables t1,t2,t3,t4;
|
|
select 1 as a from dual except all select 1 from dual;
|
|
a
|
|
(select 1 from dual) except all (select 1 from dual);
|
|
1
|
|
(select 1 from dual into @v) except all (select 1 from dual);
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'into @v) except all (select 1 from dual)' at line 1
|
|
select 1 from dual ORDER BY 1 except all select 1 from dual;
|
|
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'except all select 1 from dual' at line 1
|
|
select 1 as a from dual union all select 1 from dual;
|
|
a
|
|
1
|
|
1
|
|
create table t1 (a int, b blob, a1 int, b1 blob) engine=MyISAM;
|
|
create table t2 (c int, d blob, c1 int, d1 blob) engine=MyISAM;
|
|
insert into t1 values (1,"ddd", 1, "sdfrrwwww"),(2, "fgh", 2, "dffggtt"),(2, "fgh", 2, "dffggtt");
|
|
insert into t2 values (2, "fgh", 2, "dffggtt"),(3, "ffggddd", 3, "dfgg");
|
|
(select a,b,b1 from t1) except all (select c,d,d1 from t2);
|
|
a b b1
|
|
1 ddd sdfrrwwww
|
|
2 fgh dffggtt
|
|
create table t3 (select a,b,b1 from t1) except all (select c,d,d1 from t2);
|
|
show create table t3;
|
|
Table Create Table
|
|
t3 CREATE TABLE `t3` (
|
|
`a` int(11) DEFAULT NULL,
|
|
`b` blob DEFAULT NULL,
|
|
`b1` blob DEFAULT NULL
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
|
|
drop tables t1,t2,t3;
|
|
CREATE TABLE t (i INT);
|
|
INSERT INTO t VALUES (1),(2);
|
|
SELECT * FROM t WHERE i != ANY ( SELECT 3 EXCEPT ALL SELECT 3 );
|
|
i
|
|
drop table t;
|