Details
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Bug
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Status: Open (View Workflow)
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Minor
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Resolution: Unresolved
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10.2(EOL), 10.3(EOL), 10.4(EOL), 10.5(EOL), 10.6, 10.7(EOL), 10.8(EOL)
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None
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None
Description
sql/opt_subselect.cc:2032
Local variable optimization_delayed is set to TRUE in the beginning of the function, and never changed. So the code inside "if (optimization_delayed)" always returns, and we never execute the rest of the function.
static bool convert_subq_to_jtbm(JOIN *parent_join, |
Item_in_subselect *subq_pred,
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bool *remove_item) |
{
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SELECT_LEX *parent_lex= parent_join->select_lex;
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List<TABLE_LIST> *emb_join_list= &parent_lex->top_join_list;
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TABLE_LIST *emb_tbl_nest= NULL; // will change when we learn to handle outer joins |
TABLE_LIST *tl;
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bool *optimization_delayed= TRUE;* |
...
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if (optimization_delayed) |
{
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DBUG_ASSERT(parent_join->table_count < MAX_TABLES);
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jtbm->jtbm_table_no= parent_join->table_count;
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create_subquery_temptable_name(&tbl_alias,
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subq_pred->unit->first_select()->select_number);
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jtbm->alias.str= tbl_alias.str;
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jtbm->alias.length= tbl_alias.length;
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parent_join->table_count++;
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*DBUG_RETURN(thd->is_fatal_error);* <== Always return here |
}
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...
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[code that is never executed]
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}
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