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Merge branch '10.2' into 10.3

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This commit is contained in:
Sergei Golubchik
2018-09-26 20:49:51 +02:00
parent 7aba6f8f88 dcbd51cee6
commit 57e0da50bb
436 changed files with 9699 additions and 196654 deletions
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29
sql/sql_statistics.h
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@ -333,12 +333,17 @@ private:
public:
Histogram histogram;
uint32 no_values_provided_bitmap()
{
return
((1 << (COLUMN_STAT_HISTOGRAM-COLUMN_STAT_COLUMN_NAME))-1) <<
(COLUMN_STAT_COLUMN_NAME+1);
}
void set_all_nulls()
{
column_stat_nulls=
((1 << (COLUMN_STAT_HISTOGRAM-COLUMN_STAT_COLUMN_NAME))-1) <<
(COLUMN_STAT_COLUMN_NAME+1);
column_stat_nulls= no_values_provided_bitmap();
}
void set_not_null(uint stat_field_no)
@ -384,8 +389,22 @@ public:
bool min_max_values_are_provided()
{
return !is_null(COLUMN_STAT_MIN_VALUE) &&
!is_null(COLUMN_STAT_MIN_VALUE);
}
!is_null(COLUMN_STAT_MAX_VALUE);
}
/*
This function checks whether the values for the fields of the statistical
tables that were NULL by DEFAULT for a column have changed or not.
@retval
TRUE: Statistics are not present for a column
FALSE: Statisitics are present for a column
*/
bool no_stat_values_provided()
{
if (column_stat_nulls == no_values_provided_bitmap())
return true;
return false;
}
};