Question

我有以下bash命令：

grep -P 'The Beatles' | wc -l

我需要创建一个模仿相同功能的SQL查询。表模式如下：

track_id    
sales_date  
sales_count
title
song_id 
release 
artist_id   
artist_mbid 
artist_name 
duration    
artist_familiarity  
artist_hotttnesss
year

示例数据：

TRZZZZZ12903D05E3A,2014-06-19,79,Infra Stellar,SOZPUEF12AF72A9F2A,Archives Vol. 2,ARBG8621187FB54842,4279aba0-1bde-40a9-8fb2-c63d165dc554,Delerium,495.22893,0.69652442519,0.498471038842,2001

我编写了以下代码，但未能进行区分大小写的匹配。

SELECT Count(track_id) FROM songs WHERE track_id LIKE '%The Beatles%' OR title LIKE '%The Beatles%' OR song_id LIKE '%The Beatles%' OR release LIKE '%The Beatles%' OR artist_id LIKE '%The Beatles%' OR artist_mbid LIKE '%The Beatles%' OR artist_name LIKE '%The Beatles%' OR duration LIKE '%The Beatles%' OR artist_familiarity LIKE '%The Beatles%' OR artist_hotttnesss LIKE '%The Beatles%' OR year LIKE '%The Beatles%'

我尝试使用COLLATE Latin1_General_CS_AS和COLLATE Latin1_General_BIN，但它给了我以下错误：

ERROR 1273 (HY000) at line 1: Unknown collation: 'Latin1_General_BIN'

无论如何，我可以做一个区分大小写的匹配？谢谢！

Answer 1

在MySQL中进行区分大小写比较的一种简单方法是使用binary：

SELECT Count(track_id)
FROM songs
WHERE track_id LIKE BINARY '%The Beatles%' OR
      title LIKE BINARY '%The Beatles%' OR
      song_id LIKE BINARY '%The Beatles%' OR
      release LIKE BINARY '%The Beatles%' OR
      artist_id LIKE BINARY '%The Beatles%' OR
      artist_mbid LIKE BINARY '%The Beatles%' OR
      artist_name LIKE BINARY '%The Beatles%' OR
      duration LIKE BINARY '%The Beatles%' OR
      artist_familiarity LIKE BINARY '%The Beatles%' OR 
      artist_hotttnesss LIKE BINARY  '%The Beatles%' OR
      year LIKE BINARY '%The Beatles%';

顺便说一句，这类问题只是说＆＃34;使用全文索引，使用全文索引＆＃34;。您可以阅读here。

SQL查询类似于Grep功能

1 个答案: