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@@in_predicate_conversion_threshold

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* rename in_subquery_conversion_threshold to in_predicate_conversion_threshold
* make it debug-only, hide from users
* change from ulong to uint - same type and range on all architectures
This commit is contained in:
Sergei Golubchik
2017-11-04 19:14:34 +01:00
parent 9ec2479778
commit 37f5569909
16 changed files with 56 additions and 71 deletions
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15
mysql-test/suite/sys_vars/r/sysvars_debug.result
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@ -1,5 +1,6 @@
select * from information_schema.system_variables
where variable_name like 'debug%'
or variable_name = 'in_predicate_conversion_threshold'
order by variable_name;
VARIABLE_NAME DEBUG
SESSION_VALUE
@ -85,3 +86,17 @@ NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT NULL
VARIABLE_NAME IN_PREDICATE_CONVERSION_THRESHOLD
SESSION_VALUE 1000
GLOBAL_VALUE 1000
GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE 1000
VARIABLE_SCOPE SESSION
VARIABLE_TYPE INT UNSIGNED
VARIABLE_COMMENT The minimum number of scalar elements in the value list of IN predicate that triggers its conversion to IN subquery
NUMERIC_MIN_VALUE 0
NUMERIC_MAX_VALUE 4294967295
NUMERIC_BLOCK_SIZE 1
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL