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86 lines
2.9 KiB
Text
86 lines
2.9 KiB
Text
#
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# MDEV-19162: anonymous derived tables part
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#
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set @save_sql_mode=@@sql_mode;
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set session sql_mode=ORACLE;
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SELECT * FROM (SELECT 1 FROM DUAL), (SELECT 2 FROM DUAL);
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Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
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def __2 1 1 3 1 1 N 32769 0 63
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def __3 2 2 3 1 1 N 32769 0 63
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1 2
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1 2
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create table t1 (a int);
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insert into t1 values (2),(3);
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create table t2 (a int);
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insert into t2 values (2),(3);
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select t1.a from t1, (select * from t2 where t2.a<= 2);
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Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
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def test t1 t1 a a 3 11 1 Y 32768 0 63
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a
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2
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3
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select t1.a, b from t1, (select a as b from t2 where t2.a<= 2);
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Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
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def test t1 t1 a a 3 11 1 Y 32768 0 63
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def test __2 __2 b b 3 11 1 Y 32768 0 63
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a b
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2 2
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3 2
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select t1.a, b from t1, (select max(a) as b from t2);
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Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
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def test t1 t1 a a 3 11 1 Y 32768 0 63
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def t2 __2 b b 3 11 1 Y 32768 0 63
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a b
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2 3
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3 3
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explain extended
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select t1.a, b from t1, (select max(a) as b 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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1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 100.00 Using join buffer (flat, BNL join)
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2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00
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Warnings:
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Note 1003 /* select#1 */ select "test"."t1"."a" AS "a","__2"."b" AS "b" from "test"."t1" join (/* select#2 */ select max("test"."t2"."a") AS "b" from "test"."t2") "__2"
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select * from (select tt.* from (select * from t1) as tt) where tt.a > 0;
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ERROR 42S22: Unknown column 'tt.a' in 'WHERE'
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select * from (select tt.* from (select * from t1) as tt) where a > 0;
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a
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2
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3
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create view v1 as select t1.a, b from t1, (select max(a) as b from t2);
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select * from v1;
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a b
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2 3
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3 3
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create procedure p1
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as
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begin
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select t1.a, b from t1, (select max(a) as b from t2);
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end/
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call p1;
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a b
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2 3
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3 3
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SET sql_mode=default;
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select * from v1;
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a b
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2 3
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3 3
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show create view v1;
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View Create View character_set_client collation_connection
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v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select `t1`.`a` AS `a`,`__3`.`b` AS `b` from (`t1` join (select max(`t2`.`a`) AS `b` from `t2`) `__3`) latin1 latin1_swedish_ci
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call p1;
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a b
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2 3
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3 3
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show create procedure p1;
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Procedure sql_mode Create Procedure character_set_client collation_connection Database Collation
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p1 PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ORACLE,NO_KEY_OPTIONS,NO_TABLE_OPTIONS,NO_FIELD_OPTIONS,NO_AUTO_CREATE_USER,SIMULTANEOUS_ASSIGNMENT CREATE DEFINER="root"@"localhost" PROCEDURE "p1"()
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as
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begin
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select t1.a, b from t1, (select max(a) as b from t2);
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end latin1 latin1_swedish_ci latin1_swedish_ci
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drop view v1;
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drop procedure p1;
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drop table t1,t2;
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set session sql_mode=@save_sql_mode;
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