Scripts

Technical Article

Improving performance on joins to large tables.

In your tenure as a DBA/developer, you've probably been asked to write dozens of stored procedures similar to this:CREATE PROCEDURE ContactInfo@ContactID intASSELECT c.Name, a.Address, p.PhoneFROM Contact cLEFT JOIN ContactAddress aON c.ContactID = a.ContactIDLEFT JOIN ContactPhone pON c.ContactID = p.ContactIDWHERE c.ContactID = @ContactIDBut there is a more efficient way to write such a query.....particularly if you […]

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2003-06-03

1,439 reads

Technical Article

Find Duplicate Employees, Customers, Etc.

Customers, employees, etc. come and go.  They get entered multiple times in inconsistent formats in databases.This simple script finds the duplicates across multiple formats and is easily modified as needed.  It's so easy, my grandmother could do it. Oops! No offense Grandma.For very large databases, create and join two temp tables indexed on the namedatetring […]

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2003-05-30

238 reads

Technical Article

Show all User-Defined Datatypes for all Databases

This procedure displays all user-defined datatypes in all databases on a server.  Another example of the power of dynamic T-SQL, this procedure dynamically generates SELECT statements for the systypes tables in each database and UNIONs them together so that they display in one recordset.

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2003-05-30

187 reads

Technical Article

Script to determine if all chars are same in field

This script is a fix to the "Script to determine if all chars are same in field"posted by Harvard Kinkead (hneal_98) . That script doesn't handle strings with trailing spaces (e.g. set @repeat = 'bbbb ')It happens because of the nature of Len function. To bypass this limitation my script concatenates one character to tested […]

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2003-05-29

101 reads

Technical Article

Table Pivoting revisited

A lot of table pivoting scripts use cursors to reach the  desired results, but SQL scripting was developed to be utilized in a data set environment rather than sequential step-thru scripting.Normally, there are 3 types of Table Pivoting - 1) column explicit 2) column implicit and 3)single column.  COLUMN EXPLICIT will place the row value […]

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2003-05-29

452 reads

Technical Article

Find Duplicate Indexes - Episode 1 (The Early SQL Versions)

The excellent script contributed by G.R. Preethiviraj Kulasingham (Preethi) Sri Lanka (contributed 2/20/03, modified 5/22/03) identifies duplicate indexes for the database on which the script is run.  It requires User Defined Functions, a feature restricted to SQL Server 2000.This version achieves similar results without using UDFs or creating any other permanent objects. It therefore works […]

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2003-05-28

788 reads

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Question of the Day

Squared Values

What happens when I run this code in SQL Server 2022?

SELECT SQUARE('12')

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