Details
Critical Description
As you can see in the attached test case a query behaves differently in 10.1 vs 10.2 and 10.3
10.1
select distinct concat(table1.T1_VAL,table1.T1_VAR) as CC, concat(table1.T1_VAL,table1.T1_VAR) = 'VALB' as chk, group_concat(table2.T3_ID) as id from test.table1 LEFT JOIN (test.table2,test.table3) on concat(T1_VAL,T1_VAR) = table2.T2_VALVAR and table2.T3_ID = table3.T3_ID group by T1_ID having CC = 'VALB'; |
+------+-----+------+
|
| CC | chk | id |
|
+------+-----+------+
|
| VALB | 1 | 1 | |
+------+-----+------+
|
1 row in set (0.00 sec) |
10.2 & 10.3
select distinct concat(table1.T1_VAL,table1.T1_VAR) as CC, concat(table1.T1_VAL,table1.T1_VAR) = 'VALB' as chk, group_concat(table2.T3_ID) as id from test.table1 LEFT JOIN (test.table2,test.table3) on concat(T1_VAL,T1_VAR) = table2.T2_VALVAR and table2.T3_ID = table3.T3_ID group by T1_ID having CC = 'VALB'; |
Empty set (0.01 sec) |
|
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