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...
DECLARE name [BINARY] [INSENSITIVE] [NO SCROLL] CURSOR [{WITH | WITHOUT} HOLD] FOR query [FOR READ ONLY] 函数 从表中删除行. DELETE FROM [ONLY] table [[AS] alias] [USING usinglist] [WHERE condition | WHERE CURRENT OF cursor_name ] 丢弃 丢弃会话的状态. DISCARD { ALL | PLANS | ...
~* Matches regular expression, case insensitive 'thomas' ~* '.*Thomas.*' !~ Does not match regular expression, case sensitive 'thomas' !~ '.*Thomas.*' !~* Does not match regular expression, case insensitive 'thomas' !~* '.*vadim.*' 注意:~相当于like Some examples: 'abc' ~ 'abc'...
基本的 Eloquent Where 查询作为首个要讲解的搜索功能,我们先不涉及新知识点。...它的工作原理,类似 &&(与查询) 运算符,当所有条件都为 true 时,返回结果集: case-insensitive. Whether you type FOO, Foo, fOO, etc., you get the same result!...版本,可以查看 Laravel changelog 执...
PostgreSQL 支持用户密码的加密存储(加密方式由password_encryption参数决定),确保数据库管理员无法得到用户的密码。 如果我们采用了 SCRAM 或者 MD5 加密的客户端认证,明文密码甚至不会在服务器中出现,因为客户端在发送之前就已经进行了密码加密。推荐使用 SCRAM 加密,因为它是一个互联网标准,而且比 PostgreSQL 使用的 ...
INNER_P INOUT INPUT_P INSENSITIVE INSERT INSTEAD INT_P INTEGER INTERSECT INTERVAL INTO INVOKER IS ISNULL ISOLATION JOIN KEY LABEL LANGUAGE LARGE_P LAST_P LATERAL_P LEADING LEAKPROOF LEAST LEFT LEVEL LIKE LIMIT LISTEN LOAD LOCAL LOCALTIME LOCALTIMESTAMP LOCATION LOCK_P LOCKED LOGGED ...
注意:所有参数名称都是大小写不敏感的。case-insensitive 在pg中参数配置共有以下几种类型: (1)Boolean:可以设置为以下这些值:on, off, true, false, yes, no, 1, 0 (2)String:字符串,用单引号或者双引号包裹 (3)Numeric:整数 (4)Numeric with Unit:带单位的整数如:'120 ms' ...
Consider the same example as used above of the “students_info” table. The lower() function here in this case can be used like this: SELECT * FROM students_info WHERE LOWER(studentname) = LOWER('aLEx'); The above query will search for case-insensitive matching. The LOWER(studentname) ...
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...
Example 2: Case-Insensitive Regex Matching This example retrieves data for users whose first names start with "a" or "A". Code: -- Find users whose first name starts with "a" or "A"SELECT*FROMusersWHEREfirst_name~*'^a'; Copy