Details
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Bug
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Status: Confirmed (View Workflow)
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Major
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Resolution: Unresolved
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5.5, 10.0, 10.1, 10.2, 10.3
Description
Using UNION and UNION ALL redefines datatypes from tinyint(1) to tinyint(4).
How to do:
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mariadb> create table table_test (column_test_boolean tinyint(1)); |
Query OK, 0 rows affected (0.07 sec) |
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mariadb> insert into table_test (column_test_boolean) values (1), (0), (1); |
Query OK, 1 row affected (0.00 sec) |
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mariadb> create table table_test_2 select * from table_test;
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Query OK, 0 rows affected (0.00 sec) |
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mariadb> desc table_test_2
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-> ;
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+---------------------+------------+------+-----+---------+-------+
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| Field | Type | Null | Key | Default | Extra |
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+---------------------+------------+------+-----+---------+-------+
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| column_test_boolean | tinyint(1) | YES | | NULL | | |
+---------------------+------------+------+-----+---------+-------+
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mariadb> create table table_test_3 select * from table_test union all select * from table_test;
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Query OK, 0 rows affected (0.01 sec) |
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mariadb> desc table_test_3;
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+---------------------+------------+------+-----+---------+-------+
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| Field | Type | Null | Key | Default | Extra |
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+---------------------+------------+------+-----+---------+-------+
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| column_test_boolean | tinyint(4) | YES | | NULL | | |
+---------------------+------------+------+-----+---------+-------+
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It occurs when opening the select, so it affects "select", "create table ... select", "creates view ... as select", ....
The problem is that i use TinyInt(1) fields as boolean,
so TinyInt(4) breaks my code.
