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MDEV-18918 SQL mode EMPTY_STRING_IS_NULL breaks RBR upon CREATE TABLE .. SELECT

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Removing DEFAULT from INFORMATION_SCHEMA columns.
DEFAULT in read-only tables is rather meaningless.
Upgrade should go smoothly.

Also fixes:
 MDEV-20254 Problems with EMPTY_STRING_IS_NULL and I_S tables
This commit is contained in:
Alexander Barkov 2021-12-28 17:43:40 +04:00
commit da37bfd8d6
46 changed files with 2063 additions and 1967 deletions
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8
plugin/user_variables/mysql-test/user_variables/basic.result
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@ -11,10 +11,10 @@ PLUGIN_MATURITY Stable
SHOW CREATE TABLE INFORMATION_SCHEMA.USER_VARIABLES;
Table Create Table
user_variables CREATE TEMPORARY TABLE `user_variables` (
`VARIABLE_NAME` varchar(64) NOT NULL DEFAULT '',
`VARIABLE_VALUE` varchar(2048) DEFAULT NULL,
`VARIABLE_TYPE` varchar(64) NOT NULL DEFAULT '',
`CHARACTER_SET_NAME` varchar(32) DEFAULT NULL
`VARIABLE_NAME` varchar(64) NOT NULL,
`VARIABLE_VALUE` varchar(2048),
`VARIABLE_TYPE` varchar(64) NOT NULL,
`CHARACTER_SET_NAME` varchar(32)
) ENGINE=MEMORY DEFAULT CHARSET=utf8
FLUSH USER_VARIABLES;
SELECT COUNT(*) FROM INFORMATION_SCHEMA.USER_VARIABLES;