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MDEV-15744: Assertion `derived->table' failed in mysql_derived_merge_for_insert

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For singe-table views, we need to find the bottom most base table in the embedded views
and then update that table
This commit is contained in:
Varun Gupta 2019-01-29 14:18:35 +02:00
parent eff71f39dd
commit 08c05b5f34
3 changed files with 41 additions and 2 deletions
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24
mysql-test/r/loaddata.result
View file

@ -550,3 +550,27 @@ SELECT HEX(a) FROM t1;
HEX(a)
C3A4
DROP TABLE t1;
#
# MDEV-15744: Assertion `derived->table' failed in mysql_derived_merge_for_insert
#
create table t1 (a int, b int);
CREATE OR REPLACE VIEW t2 AS SELECT * FROM t1;
CREATE VIEW v2 AS SELECT * FROM t2;
LOAD DATA INFILE '../../std_data/loaddata7.dat' INTO TABLE v2
FIELDS TERMINATED BY ',' LINES TERMINATED BY '\r\n';
select * from v2;
a b
2 2
3 3
4 4
5 5
6 6
select * from t2;
a b
2 2
3 3
4 4
5 5
6 6
DROP VIEW IF EXISTS v2,t2;
DROP TABLE IF EXISTS t1;

14
mysql-test/t/loaddata.test
View file

@ -676,3 +676,17 @@ CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET utf8);
LOAD DATA INFILE '../../std_data/loaddata/mdev-11631.txt' INTO TABLE t1 CHARACTER SET utf8;
SELECT HEX(a) FROM t1;
DROP TABLE t1;
--echo #
--echo # MDEV-15744: Assertion `derived->table' failed in mysql_derived_merge_for_insert
--echo #
create table t1 (a int, b int);
CREATE OR REPLACE VIEW t2 AS SELECT * FROM t1;
CREATE VIEW v2 AS SELECT * FROM t2;
LOAD DATA INFILE '../../std_data/loaddata7.dat' INTO TABLE v2
FIELDS TERMINATED BY ',' LINES TERMINATED BY '\r\n';
select * from v2;
select * from t2;
DROP VIEW IF EXISTS v2,t2;
DROP TABLE IF EXISTS t1;

5
sql/sql_load.cc
View file

@ -233,8 +233,9 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
if (open_and_lock_tables(thd, table_list, TRUE, 0))
DBUG_RETURN(TRUE);
if (mysql_handle_single_derived(thd->lex, table_list, DT_MERGE_FOR_INSERT) ||
mysql_handle_single_derived(thd->lex, table_list, DT_PREPARE))
if (table_list->handle_derived(thd->lex, DT_MERGE_FOR_INSERT))
DBUG_RETURN(TRUE);
if (mysql_handle_list_of_derived(thd->lex, table_list, DT_PREPARE))
DBUG_RETURN(TRUE);
if (setup_tables_and_check_access(thd, &thd->lex->select_lex.context,
&thd->lex->select_lex.top_join_list,