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removed SELECT_LEX_UNIT -> SELECT_LEX pointer conversion (SCRUM)

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fixed some possible bugs
This commit is contained in:
bell@sanja.is.com.ua
2002-10-30 13:18:52 +02:00
parent 9adf688be6
commit 1f20cf3b42
16 changed files with 569 additions and 281 deletions
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27
sql/sql_union.cc
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@ -115,7 +115,8 @@ int st_select_lex_unit::prepare(THD *thd, select_result *result)
TMP_TABLE_PARAM tmp_table_param;
this->thd= thd;
this->result= result;
SELECT_LEX *lex_select_save= thd->lex.select, *sl;
SELECT_LEX_NODE *lex_select_save= thd->lex.current_select;
SELECT_LEX *sl;
/* Global option */
if (((void*)(global_parameters)) == ((void*)this))
@ -169,7 +170,7 @@ int st_select_lex_unit::prepare(THD *thd, select_result *result)
sl->options | thd->options | SELECT_NO_UNLOCK,
union_result);
joins.push_back(new JOIN_P(join));
thd->lex.select=sl;
thd->lex.current_select= sl;
offset_limit_cnt= sl->offset_limit;
select_limit_cnt= sl->select_limit+sl->offset_limit;
if (select_limit_cnt < sl->select_limit)
@ -188,29 +189,29 @@ int st_select_lex_unit::prepare(THD *thd, select_result *result)
if (res | thd->fatal_error)
goto err;
}
thd->lex.select= lex_select_save;
thd->lex.current_select= lex_select_save;
DBUG_RETURN(res | thd->fatal_error);
err:
thd->lex.select= lex_select_save;
thd->lex.current_select= lex_select_save;
DBUG_RETURN(-1);
}
int st_select_lex_unit::exec()
{
DBUG_ENTER("st_select_lex_unit::exec");
SELECT_LEX *lex_select_save= thd->lex.select;
SELECT_LEX_NODE *lex_select_save= thd->lex.current_select;
if (executed && !depended)
if (executed && !dependent)
DBUG_RETURN(0);
executed= 1;
if (depended || !item || !item->assigned())
if (dependent || !item || !item->assigned())
{
if (optimized && item && item->assigned())
item->assigned(0); // We will reinit & rexecute unit
for (SELECT_LEX *sl= first_select(); sl; sl= sl->next_select())
{
thd->lex.select=sl;
thd->lex.current_select= sl;
offset_limit_cnt= sl->offset_limit;
select_limit_cnt= sl->select_limit+sl->offset_limit;
if (select_limit_cnt < sl->select_limit)
@ -230,7 +231,7 @@ int st_select_lex_unit::exec()
}
if (res)
{
thd->lex.select= lex_select_save;
thd->lex.current_select= lex_select_save;
DBUG_RETURN(res);
}
}
@ -239,12 +240,14 @@ int st_select_lex_unit::exec()
if (union_result->flush())
{
thd->lex.select= lex_select_save;
thd->lex.current_select= lex_select_save;
DBUG_RETURN(1);
}
/* Send result to 'result' */
thd->lex.select = first_select();
// to correct ORDER BY reference resolving
thd->lex.current_select = first_select();
res =-1;
{
/* Create a list of fields in the temporary table */
@ -283,7 +286,7 @@ int st_select_lex_unit::exec()
}
}
thd->lex.select_lex.ftfunc_list= &thd->lex.select_lex.ftfunc_list_alloc;
thd->lex.select= lex_select_save;
thd->lex.current_select= lex_select_save;
DBUG_RETURN(res);
}