Now you can use regular expressions in SQL Server queries, too. I’ve created an open-source project,sql-server-regex, that lets you run regular expressions in T-SQL queries using scalar and table-valued functions. The most common regular expression use cases are supported, includingMatch,Split...
This article introduces regular expressions for SQL Server. 备注 As a preview feature, the technology presented in this article is subject to Supplemental Terms of Use for Microsoft Azure Previews. A regular expression, or regex, is a sequence of characters that defines a search pattern for text...
REGEXP_SUBSTR Extracts parts of a string based on a regular expression pattern. Returns Nth occurrence of a substring that matches the regex pattern. REGEXP_INSTR Returns the starting or ending position of the matched substring, depending on the option supplied. REGEXP_COUNT Returns a count of...
this kind of query also represents an overzealous use of regular expressions. The splitting operation accomplished by the "\w+" expression in this case could be just as easily accomplished with the String.Split method, which would be much faster. Regular expressions are a very powerful tool, bu...
When migrating from another database platform to SQL Server, the lack of regular expressions support can sometimes be a roadblock. This sample library can be...
(dog | cat) Capture and implicitly number the expression dog | cat (?<pet>dog | cat) Capture subexpression dog | cat and name it pet Examples Some examples of using regular expressions. Example 1: Finding All Select Statements You want to find all SELECT statements in your SQL scripts. ...
The InfluxDB Cloud Serverless SQL implementation uses thePCRE-likeregular expressionsyntax(excluding some features such as look-around and back-references) and supports the following regular expression functions: regexp_count regexp_count Returns the number of matches that a regular expression has in ...
(dog | cat)Capture and implicitly number the expressiondog | cat (?<pet>dog | cat)Capture subexpressiondog | catand name itpet Examples Some examples of using regular expressions. Example 1: Finding All Select Statements You want to find all SELECT statements in your SQL scripts. ...
The SQL Server PATINDEX() function returns the position of a pattern within an input string. Following is the syntax of PATINDEX(): PATINDEX ( '%StringPattern%' , input_string ) The PATINDEX() function accepts two parameters: 1. String_Pattern. This parameter defines character expression th...
There are syntax differences between the regular expressions that can be used inFind whatstrings and those that are valid in Microsoft .NET Framework programming. For example, inFind and Replace, the braces notation {} is used for tagged expressions. So the expression "zo{1}" matches all occu...