Is there a SQL equivalent to Delphi's Pos() function?
You bet. It's called the SUBSTRING function. Like the Pos function, the SUBSTRING function in SQL will return a substring of a string based upon a range of characters you specify. It's a handy function...
View ArticleT-SQL UDF Quickly Determines How Often a Substring Appears
Microsoft SQL Server 2005 or Microsoft SQL Server 2000 database administrators sometimes come across the problem of hitting the 900-bytes limit for unique constraints. To work around the 900-byte...
View ArticleChange a Substring with SQL
However, my SQL command gives me an invalid token error at the opening parenthesis of SUBSTR in the SET statement. Is there a rule that you can’t use SUBSTR in a SET statement? If so, do you have a...
View ArticleMysql SQL Injection
picture or some content is missing on returned page then that site is vulnerable to blind sql injection. Replace 4 with 5. so if some text.com/news.1. Let us the discuss the harder part i.php?id=7 and...
View Article50ths… SQL Saturday and Life
This will let you use SQL naturally, enabling the query engine internals to optimize your output needs without you needing to spend a lot of time thinking about it. This will mean less time trying to...
View ArticleSQL SUBSTRING Function
The SQL SUBSTRING function is one of the SQL String Function, which is used to return specified number of characters from the given expression. The SUBSTRING function uses its third argument to decide,...
View ArticleT-SQL UDF Quickly Determines How Often a Substring Appears
Microsoft SQL Server 2005 or Microsoft SQL Server 2000 database administrators sometimes come across the problem of hitting the 900-bytes limit for unique constraints. To work around the 900-byte...
View ArticleSQL Server Substring with CharIndex
In this article we are going to explore the T-SQL function CharIndex and also how to use it with another T-SQL function Substring(). CharIndex: This function returns the location of a substring in a...
View ArticleMysql SQL Injection
picture or some content is missing on returned page then that site is vulnerable to blind sql injection. Replace 4 with 5. so if some text.com/news.1. Let us the discuss the harder part i.php?id=7 and...
View ArticleString Comparisons in SQL: The Longest Common Substring.
I’ve always wanted a SQL function that tells me the longest substring shared between two strings. As a present to myself, I’ve written one. I hope someone else finds it useful. There are several...
View ArticleSUBSTRING (Transact-SQL)
Returns part of a character, binary, text, or image expression in SQL Server. The following example shows how to return only a part of a character string. From the sys.databases table, this query...
View ArticleT-SQL Substring: Splicing a String from Another String
Transact-SQL or T-SQL is a way to run SQL statements on your database tables. SQL Server offers several string functions, which you should know to properly manipulate and work with your data. The...
View ArticleT-SQL UDF Quickly Determines How Often a Substring Appears
Microsoft SQL Server 2005 or Microsoft SQL Server 2000 database administrators sometimes come across the problem of hitting the 900-bytes limit for unique constraints. To work around the 900-byte...
View ArticleString Comparisons in SQL: The Longest Common Substring.
I’ve always wanted a SQL function that tells me the longest substring shared between two strings. As a present to myself, I’ve written one. I hope someone else finds it useful. There are several...
View ArticleOptimizing Substring Search Performance in SQL Server
The requirement of searching data by part of the value is very common in business applications. All of us are familiar with it – users want to be able to search by entering just a few letters from the...
View ArticlePerformance Tuning in SQL Server: Top 5 Ways to Find Slow Queries
SQL performance tuning is a never ending battle ... worker time (CPU), etc. SELECT TOP 10 SUBSTRING(qt.TEXT, (qs.statement_start_offset/2)+1, ((CASE qs.statement_end_offset WHEN -1 THEN...
View ArticleSQL SUBSTRING Function
The SQL SUBSTRING function is one of the SQL String Function, which is used to return specified number of characters from the given expression. The SUBSTRING function uses its third argument to decide,...
View ArticleSQL Server Substring with CharIndex
In this article we are going to explore the T-SQL function CharIndex and also how to use it with another T-SQL function Substring(). CharIndex: This function returns the location of a substring in a...
View Article50ths… SQL Saturday and Life
This will let you use SQL naturally, enabling the query engine internals to optimize your output needs without you needing to spend a lot of time thinking about it. This will mean less time trying to...
View ArticleT-SQL UDF Quickly Determines How Often a Substring Appears
Microsoft SQL Server 2005 or Microsoft SQL Server 2000 database administrators sometimes come across the problem of hitting the 900-bytes limit for unique constraints. To work around the 900-byte...
View Article