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Fix for bug #6008: MySQL does not create warnings when creating database and using IF NOT EXISTS

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produce warning for 'create database if not exists' if database exists
  do not update database options in this case  
  produce warning for 'create table if not exists' if table exists
This commit is contained in:
gluh@eagle.intranet.mysql.r18.ru
2005-09-12 17:09:19 +05:00
parent 2a07350854
commit d9bd3c11e4
6 changed files with 67 additions and 14 deletions
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28
mysql-test/r/create.result
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@@ -9,6 +9,8 @@ NULL
drop table if exists t1;
create table t1 (b char(0) not null);
create table if not exists t1 (b char(0) not null);
Warnings:
Note 1050 Table 't1' already exists
insert into t1 values (""),(null);
Warnings:
Warning 1263 Data truncated; NULL supplied to NOT NULL column 'b' at row 2
@@ -232,9 +234,13 @@ create table t1 select x'4132';
drop table t1;
create table t1 select 1,2,3;
create table if not exists t1 select 1,2;
Warnings:
Note 1050 Table 't1' already exists
create table if not exists t1 select 1,2,3,4;
ERROR 21S01: Column count doesn't match value count at row 1
create table if not exists t1 select 1;
Warnings:
Note 1050 Table 't1' already exists
select * from t1;
1 2 3
1 2 3
@@ -243,9 +249,13 @@ select * from t1;
drop table t1;
create table t1 select 1,2,3;
create table if not exists t1 select 1,2;
Warnings:
Note 1050 Table 't1' already exists
create table if not exists t1 select 1,2,3,4;
ERROR 21S01: Column count doesn't match value count at row 1
create table if not exists t1 select 1;
Warnings:
Note 1050 Table 't1' already exists
select * from t1;
1 2 3
1 2 3
@@ -255,11 +265,15 @@ drop table t1;
create table t1 (a int not null, b int, primary key (a));
insert into t1 values (1,1);
create table if not exists t1 select 2;
Warnings:
Note 1050 Table 't1' already exists
select * from t1;
a b
1 1
0 2
create table if not exists t1 select 3 as 'a',4 as 'b';
Warnings:
Note 1050 Table 't1' already exists
create table if not exists t1 select 3 as 'a',3 as 'b';
ERROR 23000: Duplicate entry '3' for key 1
select * from t1;
@@ -593,3 +607,17 @@ drop database mysqltest;
create table test.t1 like x;
ERROR 42000: Incorrect database name 'NULL'
drop table if exists test.t1;
create database mysqltest;
create database if not exists mysqltest character set latin2;
Warnings:
Note 1007 Can't create database 'mysqltest'; database exists
show create database mysqltest;
Database Create Database
mysqltest CREATE DATABASE `mysqltest` /*!40100 DEFAULT CHARACTER SET latin1 */
drop database mysqltest;
use test;
create table t1 (a int);
create table if not exists t1 (a int);
Warnings:
Note 1050 Table 't1' already exists
drop table t1;