mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-05-09 08:34:28 +02:00
Code Issues Projects Releases Packages Wiki Activity

MWL#17: Table elimination

Browse source 
- code cleanup
This commit is contained in:
Sergey Petrunya 2009-08-16 12:15:49 +03:00
commit b70cb552e5
1 changed files with 3 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

12
sql/opt_table_elimination.cc
View file

@ -125,7 +125,7 @@ public:
make elements that depend on them bound, too.
*/
Module_dep *next;
uint unknown_args; /* TRUE<=> The entity is considered bound */
uint unknown_args;
Module_dep() : next(NULL), unknown_args(0) {}
};
@ -249,11 +249,9 @@ void run_elimination_wave(Table_elimination *te, Module_dep *bound_modules);
void eliminate_tables(JOIN *join);
static void mark_as_eliminated(JOIN *join, TABLE_LIST *tbl);
#if 0
#ifndef DBUG_OFF
static void dbug_print_deps(Table_elimination *te);
#endif
#endif
/*******************************************************************************************/
/*
@ -854,7 +852,7 @@ collect_funcdeps_for_join_list(Table_elimination *te,
/*
This is used to analyse expressions in "tbl.col=expr" dependencies so
This is used to analyze expressions in "tbl.col=expr" dependencies so
that we can figure out which fields the expression depends on.
*/
@ -965,7 +963,7 @@ bool setup_equality_deps(Table_elimination *te, Module_dep **bound_deps_list)
}
*bound_deps_list= bound_dep;
//DBUG_EXECUTE("test", dbug_print_deps(te); );
DBUG_EXECUTE("test", dbug_print_deps(te); );
DBUG_RETURN(FALSE);
}
@ -1089,7 +1087,6 @@ static
void signal_from_field_to_exprs(Table_elimination* te, Field_value *field_dep,
Module_dep **bound_modules)
{
/* Now, expressions */
for (uint i=0; i < te->n_equality_deps; i++)
{
if (bitmap_is_set(&te->expr_deps, field_dep->bitmap_offset + i) &&
@ -1213,7 +1210,6 @@ void run_elimination_wave(Table_elimination *te, Module_dep *bound_modules)
for (Outer_join_module *outer_join_dep= table_dep->outer_join_dep;
outer_join_dep; outer_join_dep= outer_join_dep->parent)
{
//if (!(outer_join_dep->missing_tables &= ~table_dep->table->map))
if (outer_join_dep->unknown_args &&
!--outer_join_dep->unknown_args)
{
@ -1268,7 +1264,6 @@ static void mark_as_eliminated(JOIN *join, TABLE_LIST *tbl)
}
#if 0
#ifndef DBUG_OFF
static
void dbug_print_deps(Table_elimination *te)
@ -1323,7 +1318,6 @@ void dbug_print_deps(Table_elimination *te)
DBUG_VOID_RETURN;
}
#endif
#endif
/**
@} (end of group Table_Elimination)