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Bug#31177: Server variables can't be set to their current values

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Default values of variables were not subject to upper/lower bounds
and step, while setting variables was. Bounds and step are also
applied to defaults now; defaults are corrected quietly, values
given by the user are corrected, and a correction-warning is thrown
as needed. Lastly, very large values could wrap around, starting
from 0 again. They are bounded at the maximum value for the
respective data-type now if no lower maximum is specified in the
variable's definition.
This commit is contained in:
tnurnberg@mysql.com/white.intern.koehntopp.de
2007-11-30 06:32:04 +01:00
parent 6b92ec4acb
commit 31d4e58ad4
21 changed files with 307 additions and 121 deletions
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2
mysql-test/r/innodb_mysql.result
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@ -712,6 +712,8 @@ INSERT INTO t1(b,c) SELECT b,c FROM t2;
UPDATE t2 SET c='2007-01-03';
INSERT INTO t1(b,c) SELECT b,c FROM t2;
set @@sort_buffer_size=8192;
Warnings:
Warning 1292 Truncated incorrect sort_buffer_size value: '8192'
SELECT COUNT(*) FROM t1;
COUNT(*)
3072