mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 20:12:31 +01:00
536 lines
16 KiB
Text
536 lines
16 KiB
Text
set @@join_buffer_size=256*1024;
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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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insert into t1 values (1,1),(2,2);
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insert into t2 values (2,2),(3,3);
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(select a,b from t1) except (select c,d from t2);
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a b
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1 1
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EXPLAIN (select a,b from t1) except (select c,d 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 2
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2 EXCEPT t2 ALL NULL NULL NULL NULL 2
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NULL EXCEPT RESULT <except1,2> ALL NULL NULL NULL NULL NULL
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EXPLAIN extended (select a,b from t1) except (select c,d 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 2 100.00
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2 EXCEPT t2 ALL NULL NULL NULL NULL 2 100.00
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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 (/* 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 a,b from t1) except (select c,d 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 2 100.00
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2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00
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3 EXCEPT t2 ALL NULL NULL NULL NULL 2 100.00
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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 (/* select#3 */ select `test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2`)) `a`
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EXPLAIN format=json (select a,b from t1) except (select c,d 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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"table": {
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"table_name": "t1",
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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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{
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"query_block": {
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"select_id": 2,
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"operation": "EXCEPT",
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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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]
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}
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}
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}
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ANALYZE format=json (select a,b from t1) except (select c,d from t2);
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ANALYZE
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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": 1,
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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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"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": 2,
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"r_rows": 2,
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"r_total_time_ms": "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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"query_block": {
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"select_id": 2,
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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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"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": 2,
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"r_rows": 2,
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"r_total_time_ms": "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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ANALYZE format=json select * from ((select a,b from t1) except (select c,d from t2)) a;
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ANALYZE
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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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"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": 2,
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"r_rows": 1,
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"r_total_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": 1,
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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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"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": 2,
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"r_rows": 2,
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"r_total_time_ms": "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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"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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"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": 2,
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"r_rows": 2,
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"r_total_time_ms": "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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select * from ((select a,b from t1) except (select c,d from t2)) a;
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a b
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1 1
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prepare stmt from "(select a,b from t1) except (select c,d from t2)";
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execute stmt;
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a b
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1 1
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execute stmt;
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a b
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1 1
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prepare stmt from "select * from ((select a,b from t1) except (select c,d from t2)) a";
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execute stmt;
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a b
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1 1
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execute stmt;
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a b
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1 1
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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);
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insert into t2 values (2,2),(3,3);
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insert into t3 values (4,4),(5,5);
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insert into t4 values (4,4),(7,7);
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(select a,b,e,f from t1,t3) except (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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1 1 5 5
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2 2 5 5
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EXPLAIN (select a,b,e,f from t1,t3) except (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 2
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1 PRIMARY t3 ALL NULL NULL NULL NULL 2 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 2 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 a,b,e,f from t1,t3) except (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 2
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1 PRIMARY t3 ALL NULL NULL NULL NULL 2 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 2 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 extended select * from ((select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4)) 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 4 100.00
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2 DERIVED t1 ALL NULL NULL NULL NULL 2 100.00
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2 DERIVED t3 ALL NULL NULL NULL NULL 2 100.00 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 2 100.00 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 `a`.`a` AS `a`,`a`.`b` AS `b`,`a`.`e` AS `e`,`a`.`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 (/* 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`)) `a`
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EXPLAIN format=json (select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4);
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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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"table": {
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"table_name": "t1",
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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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"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": 2,
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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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"query_block": {
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"select_id": 2,
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"operation": "EXCEPT",
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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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"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": 2,
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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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ANALYZE format=json (select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4);
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ANALYZE
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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": 3,
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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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"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": 2,
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"r_rows": 2,
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"r_total_time_ms": "REPLACED",
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"filtered": 100,
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"r_filtered": 100
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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": 2,
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"r_rows": 2,
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"r_total_time_ms": "REPLACED",
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"filtered": 100,
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"r_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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"r_filtered": 100
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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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"r_loops": 1,
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"r_total_time_ms": "REPLACED",
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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": 2,
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"r_rows": 2,
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"r_total_time_ms": "REPLACED",
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"filtered": 100,
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"r_filtered": 100
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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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"r_loops": 1,
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"rows": 2,
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"r_rows": 2,
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"r_total_time_ms": "REPLACED",
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"filtered": 100,
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"r_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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"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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ANALYZE format=json select * from ((select a,b,e,f from t1,t3) except
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(select c,d,g,h from t2,t4)) a;
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ANALYZE
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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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"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": 4,
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"r_rows": 3,
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"r_total_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": 3,
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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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"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": 2,
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"r_rows": 2,
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"r_total_time_ms": "REPLACED",
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"filtered": 100,
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"r_filtered": 100
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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": 2,
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"r_rows": 2,
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"r_total_time_ms": "REPLACED",
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"filtered": 100,
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"r_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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"r_filtered": 100
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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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"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": 2,
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"r_rows": 2,
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"r_total_time_ms": "REPLACED",
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"filtered": 100,
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"r_filtered": 100
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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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"r_loops": 1,
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"rows": 2,
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"r_rows": 2,
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"r_total_time_ms": "REPLACED",
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"filtered": 100,
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"r_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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"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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select * from ((select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4)) a;
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a b e f
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1 1 4 4
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1 1 5 5
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2 2 5 5
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prepare stmt from "(select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4)";
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execute stmt;
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a b e f
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1 1 4 4
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1 1 5 5
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2 2 5 5
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execute stmt;
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a b e f
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1 1 4 4
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1 1 5 5
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2 2 5 5
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prepare stmt from "select * from ((select a,b,e,f from t1,t3) except (select c,d,g,h from t2,t4)) a";
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execute stmt;
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a b e f
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1 1 4 4
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1 1 5 5
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2 2 5 5
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execute stmt;
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a b e f
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1 1 4 4
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1 1 5 5
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2 2 5 5
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drop tables t1,t2,t3,t4;
|
|
select 1 as a from dual except select 1 from dual;
|
|
a
|
|
(select 1 from dual) except (select 1 from dual);
|
|
1
|
|
(select 1 from dual into @v) except (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 (select 1 from dual)' at line 1
|
|
select 1 from dual ORDER BY 1 except 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 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");
|
|
insert into t2 values (2, "fgh", 2, "dffggtt"),(3, "ffggddd", 3, "dfgg");
|
|
(select a,b,b1 from t1) except (select c,d,d1 from t2);
|
|
a b b1
|
|
1 ddd sdfrrwwww
|
|
create table t3 (select a,b,b1 from t1) except (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
|
|
drop tables t1,t2,t3;
|
|
#
|
|
# MDEV-13723: Server crashes in ha_heap::find_unique_row or
|
|
# Assertion `0' failed in st_select_lex_unit::optimize with INTERSECT
|
|
#
|
|
CREATE TABLE t (i INT);
|
|
INSERT INTO t VALUES (1),(2);
|
|
SELECT * FROM t WHERE i != ANY ( SELECT 3 EXCEPT SELECT 3 );
|
|
i
|
|
drop table t;
|
|
# End of 10.3 tests
|