One query to find the First and Last Day of Current Month in SQL Server, plus the last day of the previous month and the first day of the next.
SQL SERVER – UDF – Function to Parse AlphaNumeric Characters from String
UDF_ParseAlphaChars keeps only the alphanumeric characters in a string and strips everything else using PATINDEX and STUFF. A handy function, with a test.
REGEXP_LIKE in SQL Server 2025: Validating Codes, Emails and Phone Numbers
Validate codes, email shapes and phone numbers with REGEXP_LIKE in SQL Server 2025, using clear patterns and CHECK constraints.
SQL SERVER – Creating Comma Separate Values List from Table – UDF – SP
Three ways to build a Comma Separate Values List from a table: COALESCE, a smart SELECT, or a cursor. Written for SQL Server 2005 with VARCHAR(MAX).
SQL SERVER – UDF – Function to Convert List to Table
A UDF, udf_List2Table, to convert list to table with any delimiter you choose. Written for SQL Server 2005 with VARCHAR(MAX), and easy to adapt for 2000.
SQL SERVER – UDF – User Defined Function to Find Weekdays Between Two Dates
A user defined function that returns the number of weekdays between two dates, skipping Saturday and Sunday. It was written by Alexander Chigrik.
SQL SERVER – User Defined Functions (UDF) to Reverse String – UDF_ReverseString
UDF_ReverseString returns a reversed string starting from any position you pass. The script of the function plus usage examples, like reversing from the third character.