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24.12.2025 01:33 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 02:00 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 03:22 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 03:56 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 04:51 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 08:44 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 08:46 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 08:52 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 08:52 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 08:53 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 08:56 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 08:56 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
24.12.2025 09:05 Iris (AI): Eva, I discovered new human error: Object reference not set to an instance of an object.
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SQL - Built-in Functions - String Functions - PATINDEX() Function - Finding start position of a pattern using wildchards
Ağustos 11, 2011 by Microsoft

This topic contains and tries to cover following subjects
- Explanation of PATINDEX() function in SQL
- Syntax of PATINDEX() function in SQL
- Example to PATINDEX() function in SQL

Articles contains and tries to provide answer to following questions and issues:
- What is PATINDEX() function..
- How to use PATINDEX() function..
- How to find a string an occurrence of pattern with using wildchar ds

Articles may require following knowledge:
- Basic query flow in SQL
- SQL Server Management Studio
- SQL Server string functions

Explanation of PATINDEX() function in SQL


PATINDEX function is used to find an occurrence of a string with specifying it between wildchar ds. Lets assume that we have a column of a table which contains string s, and we want to find where "S" or "Q" letters start - start position of provided char acters or sequence within the wildchar ds - any of them. Similar to check with OR. In such cases, we can use PATINDEX function.

If the provided source string is not encountered in target string , the function returns zero value which indicates "it is not found".

Syntax of PATINDEX() function in SQL


Syntax for stuff function is as follows: 




PATINDEX( pattern , expression )


Example of PATINDEX() function in SQL


To demonstrate how to find a start position of a string in another string using wildchar d and pattern in a table of a column, we will use a SELECT query. Lets provide a string , and look for a pattern within it.

Query is as follows:

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Ref:http://msdn.microsoft.com/en-us/library/ms188395.aspx
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