database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-27 18:02:13 +03:00
Code Activity

MDEV-19632 Replication aborts with ER_SLAVE_CONVERSION_FAILED upon CREATE ... SELECT in ORACLE mode

Browse Source 
- Adding optional qualifiers to data types:
    CREATE TABLE t1 (a schema.DATE);
  Qualifiers now work only for three pre-defined schemas:

    mariadb_schema
    oracle_schema
    maxdb_schema

  These schemas are virtual (hard-coded) for now, but may turn into real
  databases on disk in the future.

- mariadb_schema.TYPE now always resolves to a true MariaDB data
  type TYPE without sql_mode specific translations.

- oracle_schema.DATE translates to MariaDB DATETIME.

- maxdb_schema.TIMESTAMP translates to MariaDB DATETIME.

- Fixing SHOW CREATE TABLE to use a qualifier for a data type TYPE
  if the current sql_mode translates TYPE to something else.

The above changes fix the reported problem, so this script:

    SET sql_mode=ORACLE;
    CREATE TABLE t2 AS SELECT mariadb_date_column FROM t1;

is now replicated as:

    SET sql_mode=ORACLE;
    CREATE TABLE t2 (mariadb_date_column mariadb_schema.DATE);

and the slave can unambiguously treat DATE as the true MariaDB DATE
without ORACLE specific translation to DATETIME.

Similar,

    SET sql_mode=MAXDB;
    CREATE TABLE t2 AS SELECT mariadb_timestamp_column FROM t1;

is now replicated as:

    SET sql_mode=MAXDB;
    CREATE TABLE t2 (mariadb_timestamp_column mariadb_schema.TIMESTAMP);

so the slave treats TIMESTAMP as the true MariaDB TIMESTAMP
without MAXDB specific translation to DATETIME.
This commit is contained in:
Alexander Barkov
2020-07-08 08:31:32 +04:00
parent a8458a2345
commit d63631c3fa
28 changed files with 860 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

86
mysql-test/suite/compat/oracle/r/rpl_mariadb_date.result Normal file
View File

@ -0,0 +1,86 @@
include/master-slave.inc
[connection master]
SET SQL_MODE=DEFAULT;
CREATE TABLE t1 (a DATE);
INSERT INTO t1 VALUES (NULL);
INSERT INTO t1 VALUES ('2001-01-01');
SET SQL_MODE= ORACLE;
CREATE TABLE t2 SELECT * FROM t1;
include/show_binlog_events.inc
Log_name Pos Event_type Server_id End_log_pos Info
master-bin.000001 # Gtid # # GTID #-#-#
master-bin.000001 # Query # # use `test`; CREATE TABLE t1 (a DATE)
master-bin.000001 # Gtid # # BEGIN GTID #-#-#
master-bin.000001 # Annotate_rows # # INSERT INTO t1 VALUES (NULL)
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows_v1 # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # COMMIT
master-bin.000001 # Gtid # # BEGIN GTID #-#-#
master-bin.000001 # Annotate_rows # # INSERT INTO t1 VALUES ('2001-01-01')
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows_v1 # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # COMMIT
master-bin.000001 # Gtid # # BEGIN GTID #-#-#
master-bin.000001 # Query # # use `test`; CREATE TABLE "t2" (
"a" mariadb_schema.date DEFAULT NULL
)
master-bin.000001 # Annotate_rows # # CREATE TABLE t2 SELECT * FROM t1
master-bin.000001 # Table_map # # table_id: # (test.t2)
master-bin.000001 # Write_rows_v1 # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # COMMIT
SET SQL_MODE= DEFAULT;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` date DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` date DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SET SQL_MODE= ORACLE;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE "t1" (
"a" mariadb_schema.date DEFAULT NULL
)
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE "t2" (
"a" mariadb_schema.date DEFAULT NULL
)
connection slave;
SELECT * FROM t1;
a
NULL
2001-01-01
SELECT * FROM t2;
a
NULL
2001-01-01
SET SQL_MODE= DEFAULT;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` date DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` date DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SET SQL_MODE= ORACLE;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE "t1" (
"a" mariadb_schema.date DEFAULT NULL
)
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE "t2" (
"a" mariadb_schema.date DEFAULT NULL
)
connection master;
DROP TABLE t1, t2;
include/rpl_end.inc