--disable_warnings
drop table if exists t1;
--enable_warnings

CREATE TABLE `t1` (
  a int not null auto_increment,
  `pseudo` varchar(35) character set latin2 NOT NULL default '',
  `email` varchar(60) character set latin2 NOT NULL default '',
  PRIMARY KEY  (a),
  UNIQUE KEY `email` USING BTREE (`email`) 
) ENGINE=HEAP CHARSET=latin1 ROW_FORMAT DYNAMIC;
set @@sql_mode="";
show variables like 'sql_mode';
show create table t1;
set @@sql_mode="ansi_quotes";
show variables like 'sql_mode';
show create table t1;
set @@sql_mode="no_table_options";
show variables like 'sql_mode';
show create table t1;
set @@sql_mode="no_key_options";
show variables like 'sql_mode';
show create table t1;
set @@sql_mode="no_field_options,mysql323,mysql40";
show variables like 'sql_mode';
show create table t1;
set sql_mode="postgresql,oracle,mssql,db2,maxdb";
select @@sql_mode;
show create table t1;
drop table t1;

#
# test for 
#  WL 1941 "NO_C_ESCAPES sql_mode"
#
# an sql_mode to disable \n, \r, \b, etc escapes in string literals. actually, to
# disable special meaning of backslash completely. It's not in the SQL standard
# and it causes some R/3 tests to fail.
#

SET @OLD_SQL_MODE=@@SQL_MODE, @@SQL_MODE='';
show local variables like 'SQL_MODE';

CREATE TABLE t1 (p int not null auto_increment, a varchar(20), primary key(p));
INSERT t1 (a) VALUES 
('\\'),
('\n'),
('\b'),
('\r'),
('\t'),
('\x'),
('\a'),
('\aa'),
('\\a'),
('\\aa'),
('_'),
('\_'),
('\\_'),
('\\\_'),
('\\\\_'),
('%'),
('\%'),
('\\%'),
('\\\%'),
('\\\\%')
;

SELECT p, hex(a) FROM t1;

delete from t1 where a in ('\n','\r','\t', '\b');

select
  masks.p,
  masks.a as mask,
  examples.a as example
from
            t1 as masks
  left join t1 as examples on examples.a LIKE masks.a
order by masks.p, example;

DROP TABLE t1;

SET @@SQL_MODE='NO_BACKSLASH_ESCAPES';
show local variables like 'SQL_MODE';

CREATE TABLE t1 (p int not null auto_increment, a varchar(20), primary key(p));
INSERT t1 (a) VALUES 
('\\'),
('\n'),
('\b'),
('\r'),
('\t'),
('\x'),
('\a'),
('\aa'),
('\\a'),
('\\aa'),
('_'),
('\_'),
('\\_'),
('\\\_'),
('\\\\_'),
('%'),
('\%'),
('\\%'),
('\\\%'),
('\\\\%')
;

SELECT p, hex(a) FROM t1;

delete from t1 where a in ('\n','\r','\t', '\b');

select 
  masks.p,
  masks.a as mask,
  examples.a as example
from
            t1 as masks
  left join t1 as examples on examples.a LIKE masks.a
order by masks.p, example;

DROP TABLE t1;

SET @@SQL_MODE=@OLD_SQL_MODE;