database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00
Code Activity

Merge remote-tracking branch 'origin/10.2' into bb-10.2-ext

Browse Source
This commit is contained in:
Alexander Barkov
2017-05-05 16:12:54 +04:00
parent 583b68e899 db0917f68f
commit ac53b49b1b
398 changed files with 15220 additions and 4380 deletions
Download Patch File Download Diff File Expand all files Collapse all files

59
storage/spider/spd_db_mysql.cc
View File

@@ -9516,6 +9516,65 @@ int spider_mysql_handler::append_explain_select(
DBUG_RETURN(0);
}
/********************************************************************
* Determine whether the current query's projection list
* consists solely of the specified column.
*
* Params IN - field_index:
* Field index of the column of interest within
* its table.
*
* Returns TRUE - if the query's projection list consists
* solely of the specified column.
* FALSE - otherwise.
********************************************************************/
bool spider_mysql_handler::is_sole_projection_field( uint16 field_index )
{
// Determine whether the projection list consists solely of the field of interest
bool is_field_in_projection_list = FALSE;
TABLE* table = spider->get_table();
uint16 projection_field_count = 0;
uint16 projection_field_index;
Field** field;
DBUG_ENTER( "spider_mysql_handler::is_sole_projection_field" );
for ( field = table->field; *field ; field++ )
{
projection_field_index = ( *field )->field_index;
if ( !( minimum_select_bit_is_set( projection_field_index ) ) )
{
// Current field is not in the projection list
continue;
}
projection_field_count++;
if ( !is_field_in_projection_list )
{
if ( field_index == projection_field_index )
{
// Field of interest is in the projection list
is_field_in_projection_list = TRUE;
}
}
if ( is_field_in_projection_list && ( projection_field_count != 1 ) )
{
// Field of interest is not the sole column in the projection list
DBUG_RETURN( FALSE );
}
}
if ( is_field_in_projection_list && ( projection_field_count == 1 ) )
{
// Field of interest is the only column in the projection list
DBUG_RETURN( TRUE );
}
DBUG_RETURN( FALSE );
}
bool spider_mysql_handler::is_bulk_insert_exec_period(
bool bulk_end
) {