在进行字符串匹配时,可以使用ILIKE操作符代替LIKE,ILIKE会忽略大小写。 sql SELECT * FROM test WHERE info ILIKE 'bi%'; -- 忽略大小写匹配 创建自定义排序规则(Collation): 从PostgreSQL 12开始,支持通过创建自定义排序规则来实现不区分大小写的排序。 sql CREATE COLLATION case_insensitive ( PROVIDER = icu...
In PostgreSQL, LIKE is case-sensitive. For case-insensitive searches, use the ILIKE operator, which functions similarly to LIKE but ignores case. Code: SELECT * FROM customers WHERE customer_name ILIKE 'jo%'; Explanation: This query retrieves any customer whose name begins with "jo", regardles...
Searching with LIKE: LIKE is case-sensitive. iLIKE is case-insensitive. TSVECTOR, TSQUERY, ts_rank(): Websearch: selectplainto_tsquery('star wars') plain, phraseto_tsquery('star wars') phrase, websearch_to_tsquery('star wars') web1, websearch_to_tsquery('star wars or trek') web2, w...
PostgreSQL extensions of the LIKE operator PostgreSQL ILIKE operator, which is similar to the LIKE operator, but allows for case-insensitive matching. For example: SELECT first_name, last_name FROM customer WHERE first_name ILIKE 'BAR%'; Output: first_name | last_name ---+--- Barbara | Jo...
I’ve ran into PostgreSQL case sensitivity myself before and I’ve seen itcome up on the forums, so I thought it might be a good thing to bring up here. Sometimes you hear that PostgreSQL is case-insensitive, but it isn’t really. What it actually does is convert your SQL to lowerca...
PostgreSQL有个ilike的方法,非常方便,之前还想着用low()等函数处理,其实不用,直接用 ilike 替换like就搞定了。 ilike (case insensitive like function).例如:User.where("name ilike '%c%'") 名字中大小和小写的c,都会被查出来,非常棒。发布于 2019-06-02 15:52 ...
useful for filtering, searching, and manipulating text. Regex allows you to identify specific patterns within text fields, making it ideal for data validation, cleaning, and advanced searches within your database. PostgreSQL supports regex-based functions like ~ (match), ~* (case-insensitive match...
citext | 1.6 | | data type for case-insensitive character strings cube | 1.5 | | data type for multidimensional cubes dblink | 1.2 | | connect to other PostgreSQL databases from within a database dict_int | 1.0 | | text search dictionary template for integers ...
citext | 1.6 | | data typeforcase-insensitivecharacterstrings cube | 1.5 | | data typeformultidimensional cubes dblink | 1.2 | |connecttoother PostgreSQL databasesfromwithin adatabasedict_int | 1.0 | |textsearch dictionary templateforintegers ...
Additionally, you can set the search_path as a switch to make the data case insensitive if you want only part of your application to behave like case insensitive without making any changes to the application. Drawbacks You need to add the search_path (with the util schema before pg_catalog...