function regexpContains(text, pattern) { return new RegExp(pattern).test(text); } // 使用示例 const text = "Hello, world!"; const pattern = /world/; console.log(regexpContains(text, pattern)); // 输出: true SQL (PostgreSQL)
SELECT regexp_match('bats Eaten gate Atone', 'at.'); In the above query: The main string is'bats Eaten gate Atone’in which the regular expression is going to be matched. The expression we want to search for is”at.”. You can see the regular expression contains a dot“.”, we c...
the regexp, and the flag(if any) as arguments and returns an array that contains the string elements/characters with the Regexp as separators. In this article, we have learned about the regexp_split_to_array() function in PostgreSQL....
When you need to replace more than one substring with the same substring, you can use the translate() Function in PostgreSQL. Syntax: TRANSLATE(original_string, set_of_characters, new_set_characters); original_string:This source string contains the set of characters to be replaced. set_of_cha...
postgresql正则判断regexppg正则表达式 POSIX正则表达是PHP编译器的默认风格,PHP中还提供了许多POSIX正则表达式函数,例如ereg()、eregi()、split()和sql_regcase()等。1. ereg()函数ereg()函数可以再字符串中查找与指定正则表达式模式相匹配的子串,其语法格式为:bool ereg ( string pattern, string string [, array...
HTTP协议是无状态的，但我们可以利用储存在客户端的cookie或者储存在服务器的session来记录用户的访问。
For a complete list of the modifiers supported by PolarDB, see the PostgreSQL core documentation. subexpression An integer value that identifies the portion of the pattern that will be returned by REGEXP_INSTR. The default value of subexpression is 0. If you specify a value for subexpression...
Whenever you need to split a text into multiple records breaking by some delimeter, there are two common options that PostgreSQL provides. The first isregpexp_split_to_tableand then next popular is using the unnest function in combination withstring_to_array. ...
在 Python 中，我们可以使用反转和比较列表、使用 zip（） 函数、将列表转换为字符串等方法检查两个列表...
() function takes the string, the regexp, and the flag(if any) as arguments and returns a table column that contains the string elements/characters with the Regexp as separators. In this article, we have learned about the regexp_split_to_table() function in PostgreSQL. This function ...