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SQL: derived fixes [related to #185]

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This commit is contained in:
Aleksey Midenkov
2017-04-30 23:51:42 +03:00
parent 8a11f9b243
commit 7e0ff13d7a
5 changed files with 21 additions and 9 deletions
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12
sql/sql_select.cc
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@ -771,6 +771,7 @@ int vers_setup_select(THD *thd, TABLE_LIST *tables, COND **where_expr,
}
SELECT_LEX *outer_slex= slex->next_select_in_list();
bool use_slex_conds= false;
if (outer_slex)
{
if (slex->vers_derived_conds)
@ -778,11 +779,12 @@ int vers_setup_select(THD *thd, TABLE_LIST *tables, COND **where_expr,
// Propagate derived conditions to outer SELECT_LEX:
if (!outer_slex->vers_conditions)
{
(outer_slex->vers_conditions= slex->vers_derived_conds).
from_inner= true;
outer_slex->vers_conditions= slex->vers_derived_conds;
outer_slex->vers_conditions.from_inner= true;
outer_slex->vers_conditions.used= true;
}
}
else if (slex->vers_conditions.import_outer)
if (slex->vers_conditions.import_outer)
{
// Propagate query conditions from nearest outer SELECT_LEX:
while (outer_slex && (!outer_slex->vers_conditions || outer_slex->vers_conditions.from_inner))
@ -791,6 +793,8 @@ int vers_setup_select(THD *thd, TABLE_LIST *tables, COND **where_expr,
{
slex->vers_conditions= outer_slex->vers_conditions;
outer_slex->vers_conditions.used= true;
DBUG_ASSERT(slex->master_unit()->derived);
use_slex_conds= slex->master_unit()->derived->is_view();
}
}
}
@ -799,7 +803,7 @@ int vers_setup_select(THD *thd, TABLE_LIST *tables, COND **where_expr,
{
if (table->table && table->table->versioned())
{
vers_select_conds_t &vers_conditions= !table->vers_conditions?
vers_select_conds_t &vers_conditions= use_slex_conds || !table->vers_conditions?
(slex->vers_conditions.used= true, slex->vers_conditions) :
table->vers_conditions;