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6c6f435b03
columns
Fixed confusing warning.
Quoting INSERT section of the manual:
----
Inserting NULL into a column that has been declared NOT NULL. For
multiple-row INSERT statements or INSERT INTO ... SELECT statements, the
column is set to the implicit default value for the column data type. This
is 0 for numeric types, the empty string ('') for string types, and the
"zero" value for date and time types. INSERT INTO ... SELECT statements are
handled the same way as multiple-row inserts because the server does not
examine the result set from the SELECT to see whether it returns a single
row. (For a single-row INSERT, no warning occurs when NULL is inserted into
a NOT NULL column. Instead, the statement fails with an error.)
----
This is also true for LOAD DATA INFILE. For INSERT user can specify
DEFAULT keyword as a value to set column default. There is no similiar
feature available for LOAD DATA INFILE.
238 lines
8.6 KiB
Text
238 lines
8.6 KiB
Text
drop table if exists t1, t2;
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SET SQL_WARNINGS=1;
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create table t1 (a int);
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create table t1 (a int);
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ERROR 42S01: Table 't1' already exists
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show count(*) errors;
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@@session.error_count
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1
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show errors;
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Level Code Message
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Error 1050 Table 't1' already exists
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show warnings;
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Level Code Message
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Error 1050 Table 't1' already exists
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create table t2(a int) default charset qwerty;
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ERROR 42000: Unknown character set: 'qwerty'
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show count(*) errors;
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@@session.error_count
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1
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show errors;
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Level Code Message
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Error 1115 Unknown character set: 'qwerty'
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create table t (i);
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
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show count(*) errors;
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@@session.error_count
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1
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show errors;
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Level Code Message
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Error 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
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insert into t1 values (1);
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insert into t1 values ("hej");
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Warnings:
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Warning 1264 Out of range value adjusted for column 'a' at row 1
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insert into t1 values ("hej"),("då");
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Warnings:
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Warning 1264 Out of range value adjusted for column 'a' at row 1
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Warning 1264 Out of range value adjusted for column 'a' at row 2
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set SQL_WARNINGS=1;
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insert into t1 values ("hej");
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Warnings:
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Warning 1264 Out of range value adjusted for column 'a' at row 1
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insert into t1 values ("hej"),("då");
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Warnings:
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Warning 1264 Out of range value adjusted for column 'a' at row 1
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Warning 1264 Out of range value adjusted for column 'a' at row 2
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drop table t1;
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set SQL_WARNINGS=0;
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drop temporary table if exists not_exists;
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Warnings:
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Note 1051 Unknown table 'not_exists'
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drop table if exists not_exists_table;
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Warnings:
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Note 1051 Unknown table 'not_exists_table'
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show warnings limit 1;
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Level Code Message
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Note 1051 Unknown table 'not_exists_table'
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drop database if exists not_exists_db;
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Warnings:
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Note 1008 Can't drop database 'not_exists_db'; database doesn't exist
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show count(*) warnings;
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@@session.warning_count
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1
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create table t1(id int);
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create table if not exists t1(id int);
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Warnings:
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Note 1050 Table 't1' already exists
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select @@warning_count;
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@@warning_count
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1
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drop table t1;
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create table t1(a tinyint, b int not null, c date, d char(5));
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load data infile '../std_data_ln/warnings_loaddata.dat' into table t1 fields terminated by ',';
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Warnings:
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Warning 1263 Column was set to data type implicit default; NULL supplied for NOT NULL column 'b' at row 2
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Warning 1265 Data truncated for column 'd' at row 3
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Warning 1265 Data truncated for column 'c' at row 4
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Warning 1261 Row 5 doesn't contain data for all columns
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Warning 1265 Data truncated for column 'b' at row 6
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Warning 1262 Row 7 was truncated; it contained more data than there were input columns
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Warning 1264 Out of range value adjusted for column 'a' at row 8
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select @@warning_count;
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@@warning_count
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7
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drop table t1;
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create table t1(a tinyint NOT NULL, b tinyint unsigned, c char(5));
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insert into t1 values(NULL,100,'mysql'),(10,-1,'mysql ab'),(500,256,'open source'),(20,NULL,'test');
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Warnings:
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Warning 1263 Column was set to data type implicit default; NULL supplied for NOT NULL column 'a' at row 1
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Warning 1264 Out of range value adjusted for column 'b' at row 2
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Warning 1265 Data truncated for column 'c' at row 2
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Warning 1264 Out of range value adjusted for column 'a' at row 3
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Warning 1264 Out of range value adjusted for column 'b' at row 3
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Warning 1265 Data truncated for column 'c' at row 3
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alter table t1 modify c char(4);
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Warnings:
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Warning 1265 Data truncated for column 'c' at row 1
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Warning 1265 Data truncated for column 'c' at row 2
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alter table t1 add d char(2);
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update t1 set a=NULL where a=10;
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Warnings:
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Warning 1263 Column was set to data type implicit default; NULL supplied for NOT NULL column 'a' at row 2
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update t1 set c='mysql ab' where c='test';
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Warnings:
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Warning 1265 Data truncated for column 'c' at row 4
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update t1 set d=c;
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Warnings:
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Warning 1265 Data truncated for column 'd' at row 1
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Warning 1265 Data truncated for column 'd' at row 2
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Warning 1265 Data truncated for column 'd' at row 3
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Warning 1265 Data truncated for column 'd' at row 4
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create table t2(a tinyint NOT NULL, b char(3));
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insert into t2 select b,c from t1;
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Warnings:
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Warning 1265 Data truncated for column 'b' at row 1
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Warning 1265 Data truncated for column 'b' at row 2
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Warning 1265 Data truncated for column 'b' at row 3
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Warning 1263 Column was set to data type implicit default; NULL supplied for NOT NULL column 'a' at row 4
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Warning 1265 Data truncated for column 'b' at row 4
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insert into t2(b) values('mysqlab');
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Warnings:
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Warning 1364 Field 'a' doesn't have a default value
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Warning 1265 Data truncated for column 'b' at row 1
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set sql_warnings=1;
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insert into t2(b) values('mysqlab');
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Warnings:
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Warning 1364 Field 'a' doesn't have a default value
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Warning 1265 Data truncated for column 'b' at row 1
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set sql_warnings=0;
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drop table t1, t2;
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create table t1(a char(10));
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alter table t1 add b char;
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set max_error_count=10;
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update t1 set b=a;
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Warnings:
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Warning 1265 Data truncated for column 'b' at row 1
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Warning 1265 Data truncated for column 'b' at row 2
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Warning 1265 Data truncated for column 'b' at row 3
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Warning 1265 Data truncated for column 'b' at row 4
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Warning 1265 Data truncated for column 'b' at row 5
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Warning 1265 Data truncated for column 'b' at row 6
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Warning 1265 Data truncated for column 'b' at row 7
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Warning 1265 Data truncated for column 'b' at row 8
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Warning 1265 Data truncated for column 'b' at row 9
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Warning 1265 Data truncated for column 'b' at row 10
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select @@warning_count;
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@@warning_count
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50
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set max_error_count=0;
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show variables like 'max_error_count';
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Variable_name Value
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max_error_count 0
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update t1 set b='hi';
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Warnings:
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select @@warning_count;
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@@warning_count
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50
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show warnings;
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Level Code Message
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set max_error_count=65535;
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show variables like 'max_error_count';
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Variable_name Value
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max_error_count 65535
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set max_error_count=10;
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show variables like 'max_error_count';
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Variable_name Value
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max_error_count 10
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drop table t1;
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create table t1 (id int) engine=isam;
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Warnings:
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Warning 1266 Using storage engine MyISAM for table 't1'
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alter table t1 engine=isam;
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Warnings:
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Warning 1266 Using storage engine MyISAM for table 't1'
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drop table t1;
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create table t1 (id int) type=heap;
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Warnings:
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Warning 1287 'TYPE=storage_engine' is deprecated; use 'ENGINE=storage_engine' instead
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alter table t1 type=myisam;
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Warnings:
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Warning 1287 'TYPE=storage_engine' is deprecated; use 'ENGINE=storage_engine' instead
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drop table t1;
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set table_type=MYISAM;
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Warnings:
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Warning 1287 'table_type' is deprecated; use 'storage_engine' instead
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create table t1 (a int);
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insert into t1 (a) values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
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update t1 set a='abc';
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Warnings:
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Warning 1264 Out of range value adjusted for column 'a' at row 1
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Warning 1264 Out of range value adjusted for column 'a' at row 2
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Warning 1264 Out of range value adjusted for column 'a' at row 3
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Warning 1264 Out of range value adjusted for column 'a' at row 4
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Warning 1264 Out of range value adjusted for column 'a' at row 5
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Warning 1264 Out of range value adjusted for column 'a' at row 6
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Warning 1264 Out of range value adjusted for column 'a' at row 7
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Warning 1264 Out of range value adjusted for column 'a' at row 8
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Warning 1264 Out of range value adjusted for column 'a' at row 9
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Warning 1264 Out of range value adjusted for column 'a' at row 10
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show warnings limit 2, 1;
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Level Code Message
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Warning 1264 Out of range value adjusted for column 'a' at row 3
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show warnings limit 0, 10;
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Level Code Message
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Warning 1264 Out of range value adjusted for column 'a' at row 1
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Warning 1264 Out of range value adjusted for column 'a' at row 2
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Warning 1264 Out of range value adjusted for column 'a' at row 3
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Warning 1264 Out of range value adjusted for column 'a' at row 4
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Warning 1264 Out of range value adjusted for column 'a' at row 5
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Warning 1264 Out of range value adjusted for column 'a' at row 6
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Warning 1264 Out of range value adjusted for column 'a' at row 7
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Warning 1264 Out of range value adjusted for column 'a' at row 8
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Warning 1264 Out of range value adjusted for column 'a' at row 9
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Warning 1264 Out of range value adjusted for column 'a' at row 10
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show warnings limit 9, 1;
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Level Code Message
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Warning 1264 Out of range value adjusted for column 'a' at row 10
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show warnings limit 10, 1;
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Level Code Message
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show warnings limit 9, 2;
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Level Code Message
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Warning 1264 Out of range value adjusted for column 'a' at row 10
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show warnings limit 0, 0;
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Level Code Message
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show warnings limit 1;
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Level Code Message
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Warning 1264 Out of range value adjusted for column 'a' at row 1
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show warnings limit 0;
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Level Code Message
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show warnings limit 1, 0;
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Level Code Message
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select * from t1 limit 0;
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a
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select * from t1 limit 1, 0;
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a
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select * from t1 limit 0, 0;
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a
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drop table t1;
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