Details
Blocker Description
If put such assert which shoud be true several tests in the test suite which use INTERSECT will fail:
diff --git a/sql/sql_base.cc b/sql/sql_base.cc
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index 2b06cf27d9b..93ed007300a 100644
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--- a/sql/sql_base.cc
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+++ b/sql/sql_base.cc
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@@ -7503,6 +7503,10 @@ bool setup_fields(THD *thd, Ref_ptr_array ref_pointer_array,
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thd->column_usage= column_usage;
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DBUG_PRINT("info", ("thd->column_usage: %d", thd->column_usage));
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+ DBUG_ASSERT(thd->lex->current_select->nest_level >= 0);
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+ DBUG_ASSERT(thd->lex->current_select->master_unit()->first_select()
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+ ->nest_level ==
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+ thd->lex->current_select->nest_level);
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if (allow_sum_func)
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thd->lex->allow_sum_func.set_bit(thd->lex->current_select->nest_level);
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thd->where= THD::DEFAULT_WHERE;
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