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MDEV-17894 Assertion `(thd->lex)->current_select' failed in MYSQLparse(),

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query with VALUES()

A table value constructor can be used in all contexts where a select
can be used. In particular an ORDER BY clause or a LIMIT clause or both
of them can be attached to a table value constructor to produce a new
query. Unfortunately execution of such queries was not supported.
This patch fixes the problem.
This commit is contained in:
Igor Babaev
2019-05-08 00:08:09 -07:00
parent 9d805004d8
commit 09aa5d3f69
13 changed files with 1339 additions and 47 deletions
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5
sql/sql_tvc.h
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@ -57,6 +57,8 @@ public:
select_result *tmp_result,
st_select_lex_unit *unit_arg);
bool to_be_wrapped_as_with_tail();
int save_explain_data_intern(THD *thd_arg,
Explain_query *output);
bool optimize(THD *thd_arg);
@ -64,4 +66,7 @@ public:
void print(THD *thd_arg, String *str, enum_query_type query_type);
};
st_select_lex *wrap_tvc_with_tail(THD *thd, st_select_lex *tvc_sl);
#endif /* SQL_TVC_INCLUDED */