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0a7faed75a
commit 854c219a7f (MDEV-17301)
broke a constraint: Fixed-length columns cannot be extended in InnoDB
without rebuilding the table.
ha_innobase::can_convert_string(): Correct the condition. We must
not allow any instantaneous change to the length of CHAR columns
measured in characters. For any format other than ROW_FORMAT=REDUNDANT,
we can allow the length in bytes to be extended if mbminlen<mbmaxlen held
before the change of the character set.
38 lines
943 B
Text
38 lines
943 B
Text
--- instant_alter_convert.result
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+++ instant_alter_convert,utf8.result
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@@ -38,7 +38,7 @@
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best.t check status OK
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call check_table('t');
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name mtype prtype len
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-a 2 800FE 200
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+a 13 2100FE 600
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# CHAR enlargement
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alter table t modify a char(220);
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affected rows: 2
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@@ -54,7 +54,7 @@
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best.t check status OK
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call check_table('t');
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name mtype prtype len
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-a 2 800FE 220
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+a 13 2100FE 660
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ALTER TABLE t CHANGE COLUMN a a CHAR(230) BINARY;
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affected rows: 2
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info: Records: 2 Duplicates: 0 Warnings: 0
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@@ -69,7 +69,7 @@
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best.t check status OK
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call check_table('t');
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name mtype prtype len
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-a 13 2F00FE 230
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+a 13 5300FE 690
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# Convert from VARCHAR to a bigger CHAR
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alter table t modify a varchar(200);
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affected rows: 2
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@@ -92,7 +92,7 @@
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best.t check status OK
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call check_table('t');
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name mtype prtype len
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-a 2 800FE 255
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+a 13 2100FE 765
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# BINARY/VARBINARY test
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create or replace table t (a varbinary(300));
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insert into t values(NULL);
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