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Reading SQL Server Error Messages Carefully

March 26, 2008
Pinal Dave
SQL Tips and Tricks
Best Practices, SQL Error Messages, SQL Server, SQL Transactions

Reading SQL Server error messages carefully means using number, severity, state, and line to narrow the cause before searching.

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SQL SERVER - 2005 - Find Highest / Most Used Stored Procedure

SQL SERVER – 2005 – Find Highest / Most Used Stored Procedure

March 22, 2008
Pinal Dave
SQL Tips and Tricks
SQL Scripts, SQL Stored Procedure, SQL System Table

Which stored procedure runs most often? My small SQL Server 2005 script finds the most used stored procedure, with execution count, worker time and calls per second.

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SQL SERVER - Introduction to Live Lock - What is Live Lock?

SQL SERVER – Introduction to Live Lock – What is Live Lock?

March 21, 2008
Pinal Dave
SQL Tips and Tricks
Software Development, SQL Lock

What is Live Lock in SQL Server? How a write request can keep waiting behind a stream of reads, how it differs from a deadlock and how to reduce it.

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SQL SERVER - Add Column With Default Column Constraint to Table

SQL SERVER – Add Column With Default Column Constraint to Table

March 19, 2008
Pinal Dave
SQL Tips and Tricks
SQL Coding Standards, SQL Constraint and Keys, SQL Scripts, SQL Server

Add a NOT NULL column with a named default Column Constraint in one ALTER TABLE statement. I always name constraints instead of letting SQL Server pick one.

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Gouache painting: beside it, the same ring hovers above an empty saucer and closes on nothing, so no match is made

Simple CASE and NULL: Use a Searched Condition

March 18, 2008
Pinal Dave
SQL Tips and Tricks
SQL Function, SQL Scripts, SQL String

Simple CASE and NULL do not match through equality. Use a searched IS NULL branch, preserve empty text, and make the result type explicit.

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A pressure cooker on a stove releasing a thin plume of steam from its safety valve, a hand resting nearby

Porting Stored Procedures Between Platforms

March 17, 2008
Pinal Dave
SQL Tips and Tricks
SQL Migration, SQL Server, SQL Stored Procedure, Temp Table

Porting stored procedures means preserving error, transaction, temporary-table, sequence, and date behavior instead of translating tokens.

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SQL SERVER - 2005 - Retrieve Any User Defined Object Details Using sys objects Database

SQL SERVER – 2005 – Retrieve Any User Defined Object Details Using sys objects Database

March 16, 2008
Pinal Dave
SQL Tips and Tricks
SQL Function, SQL Scripts, SQL System Table, SQL Utility

The sys.objects catalog view has a row for every schema-scoped object, so you can retrieve any user defined object details, like foreign keys, by object type.

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