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MDEV-8789 Implement non-recursive common table expressions

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Initial implementation
This commit is contained in:
Galina Shalygina
2015-12-17 23:52:14 +03:00
committed by Igor Babaev
parent 12b86beac8
commit dfc4772f83
19 changed files with 2070 additions and 30 deletions
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4
sql/sql_derived.cc
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@ -30,6 +30,7 @@
#include "sql_base.h"
#include "sql_view.h" // check_duplicate_names
#include "sql_acl.h" // SELECT_ACL
#include "sql_cte.h"
typedef bool (*dt_processor)(THD *thd, LEX *lex, TABLE_LIST *derived);
@ -670,6 +671,9 @@ bool mysql_derived_prepare(THD *thd, LEX *lex, TABLE_LIST *derived)
// st_select_lex_unit::prepare correctly work for single select
if ((res= unit->prepare(thd, derived->derived_result, 0)))
goto exit;
if (derived->with &&
(res= derived->with->process_column_list()))
goto exit;
lex->context_analysis_only&= ~CONTEXT_ANALYSIS_ONLY_DERIVED;
if ((res= check_duplicate_names(thd, unit->types, 0)))
goto exit;