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Fix ColumnDefinitionParser to parse unquoted DEFAULT NULL as SQL NULL - #1202
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String defaults are always quoted in a column definition, so an unquoted NULL can only be SQL NULL. Previously it was stored as defaultValueRaw 'NULL' and the MySQL column factory typecast it to 0 for integer columns (e.g. 'int DEFAULT NULL' was created as DEFAULT 0). See yiisoft/db-mysql#485
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## master #1202 +/- ##
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Coverage 98.73% 98.73%
- Complexity 1661 1663 +2
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Lines 4340 4342 +2
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vjik
approved these changes
Oct 1, 2026
Tigrov
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Oct 2, 2026
Co-authored-by: Sergei Predvoditelev <sergey.predvoditelev@gmail.com> Co-authored-by: Sergei Tigrov <rrr-r@ya.ru>
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As discussed in yiisoft/db-mysql#485: an unquoted
NULLafterDEFAULTwas stored asdefaultValueRaw = 'NULL'. The MySQLColumnFactorytypecasts it by column type, soint DEFAULT NULLwas created asDEFAULT 0. This breaks theyiisoft/queue-dbmigration: messages are never reserved becausereserved_at IS NULLnever matches.String defaults are always quoted in a column definition, so an unquoted
NULLcan only be SQLNULL. It is now parsed asdefaultValueRaw = null. Schema reading frominformation_schemais not affected, sovarchar DEFAULT 'NULL'keeps working.Checked on MySQL 8.0:
int DEFAULT NULL→DEFAULT NULL(wasDEFAULT 0);int DEFAULT 5andvarchar(10) DEFAULT 'NULL'are unchanged.Related PR: yiisoft/db-mysql#488