Nagabhushanam Ponnapalli


Technical Article

SUBSTR - SUBSTRING function extension

SUBSTR returns a portion of char, beginning at character @StartPos, @Length characters long. If @StartPos is 0, it is treated as 1. If @StartPos is positive, Oracle counts from the beginning of char to find the first character. If @StartPos is negative, Oracle counts backwards from the end of char.

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2003-07-02

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Technical Article

INSTR Function

INSTR searches string for substring. --> position is an integer indicating the character of string where SQL Server begins the search. -->If position is negative, SQL Server counts and searches backward from the end of string. occurrence is an integer indicating which occurrence of string SQL Server should search for. The value of occurrence must […]

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2002-11-12

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Question of the Day

The String Distance I

In SQL Server 2025, what is returned by this code:

SELECT EDIT_DISTANCE('Steve', 'Stan')
Assume preview features are enabled.

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