mysql select查詢區分大小寫三種方法(1/3)

1、一種方法是可以設定表或行的collation，使其為binary或case sensitive。在mysql教程中，對於column collate其約定的命名方法如下：

*_bin: 表示的是binary case sensitive collation，也就是說是區分大小寫
*_cs: case sensitive collation，區分大小寫
*_ci: case insensitive collation，不區分大小寫

 

###########
# start binary collation example
###########
mysql> create table case_bin_test (word varchar(10)) character set latin1 collate latin1_bin;
query ok, 0 rows affected (0.02 sec)

mysql> insert into case_bin_test values ('frank'),('google'),('froogle'),('flickr'),('flickr');
query ok, 5 rows affected (0.00 sec)
records: 5 duplicates: 0 warnings: 0

mysql> select * from case_bin_test where word like 'f%';
+---------+
| word |
+---------+
| froogle |
| flickr |
+---------+
2 rows in set (0.00 sec)

mysql> select * from case_bin_test where word like 'f%';
+---------+
| word |
+---------+
| frank |
| flickr |
+---------+
4 rows in set (0.00 sec)

###########
# end
########### 

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