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WL#5370 Keep forward-compatibility when changing

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'CREATE TABLE IF NOT EXISTS ... SELECT' behaviour
BUG#47132, BUG#47442, BUG49494, BUG#23992 and BUG#48814 will disappear
automatically after the this patch.
BUG#55617 is fixed by this patch too.
            
This is the 5.5 part.
It implements:
- 'CREATE TABLE IF NOT EXISTS ... SELECT' statement will not insert
  anything and binlog anything if the table already exists.
  It only generate a warning that table already exists.
- A couple of test cases for the behavior changing.
This commit is contained in:
2010-08-18 17:35:41 +08:00
parent 8977575cff
commit d3b7cd3ff2
31 changed files with 806 additions and 302 deletions
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27
mysql-test/r/trigger.result
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@ -1420,9 +1420,7 @@ create trigger t1_ai after insert on t1 for each row set @a := 7;
create table t2 (j int);
insert into t2 values (1), (2);
set @a:="";
create table if not exists t1 select * from t2;
Warnings:
Note 1050 Table 't1' already exists
insert into t1 select * from t2;
select * from t1;
i
7
@ -1434,9 +1432,7 @@ drop trigger t1_bi;
drop trigger t1_ai;
create table t3 (isave int);
create trigger t1_bi before insert on t1 for each row insert into t3 values (new.i);
create table if not exists t1 select * from t2;
Warnings:
Note 1050 Table 't1' already exists
insert into t1 select * from t2;
select * from t1;
i
7
@ -1622,10 +1618,8 @@ After DELETE, old=REPLACE, inserting a new key
After INSERT, new=REPLACE, deleting the duplicate
truncate t1;
truncate t1_op_log;
create table if not exists t1
insert into t1
select NULL, "CREATE TABLE ... SELECT, inserting a new key";
Warnings:
Note 1050 Table 't1' already exists
set @id=last_insert_id();
select * from t1;
id operation
@ -1635,10 +1629,8 @@ operation
Before INSERT, new=CREATE TABLE ... SELECT, inserting a new key
After INSERT, new=CREATE TABLE ... SELECT, inserting a new key
truncate t1_op_log;
create table if not exists t1 replace
replace into t1
select @id, "CREATE TABLE ... REPLACE SELECT, deleting a duplicate key";
Warnings:
Note 1050 Table 't1' already exists
select * from t1;
id operation
1 CREATE TABLE ... REPLACE SELECT, deleting a duplicate key
@ -1817,10 +1809,8 @@ After DELETE, old=REPLACE, inserting a new key
After INSERT, new=REPLACE, deleting the duplicate
truncate t1;
truncate t1_op_log;
create table if not exists v1
insert into v1
select NULL, "CREATE TABLE ... SELECT, inserting a new key";
Warnings:
Note 1050 Table 'v1' already exists
set @id=last_insert_id();
select * from t1;
id operation
@ -1830,10 +1820,8 @@ operation
Before INSERT, new=CREATE TABLE ... SELECT, inserting a new key
After INSERT, new=CREATE TABLE ... SELECT, inserting a new key
truncate t1_op_log;
create table if not exists v1 replace
replace into v1
select @id, "CREATE TABLE ... REPLACE SELECT, deleting a duplicate key";
Warnings:
Note 1050 Table 'v1' already exists
select * from t1;
id operation
1 CREATE TABLE ... REPLACE SELECT, deleting a duplicate key
@ -2083,7 +2071,8 @@ BEGIN
UPDATE a_nonextisting_table SET a = 1;
END//
CREATE TABLE IF NOT EXISTS t2 ( a INT, b INT ) SELECT a, b FROM t1;
ERROR 42S02: Table 'test.a_nonextisting_table' doesn't exist
Warnings:
Note 1050 Table 't2' already exists
SELECT * FROM t2;
a b
DROP TABLE t1, t2;