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SQL SERVER – SQL Commandments – Suggestions, Tips, Tricks

Pinal Dave
SQL, SQL Performance, SQL Server, SQL Tips and Tricks
Best Practices, Database, Software Development, SQL Backup and Restore, SQL Constraint and Keys, SQL DateTime, SQL Download, SQL Error Messages, SQL Function, SQL Index, SQL Joins, SQL Server DBCC, SQL Server Security, SQL Stored Procedure
Few days ago, while searching for something on web site, I came across a very good article of 25 SQL Commandments. I really enjoyed reading it. It was for Oracle, I re-wrote it for SQL Server. First 18 points are taken from original article and last 2 I added to…
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SQL SERVER – Primary Key Constraints and Unique Key Constraints

Pinal Dave
SQL, SQL Performance, SQL Server, SQL Tips and Tricks
Database, Software Development, SQL Coding Standards, SQL Constraint and Keys, SQL Download, SQL Error Messages, SQL Index, SQL Joins, SQL Scripts, SQL Server Security
Primary Key: Primary Key enforces uniqueness of the column on which they are defined. Primary Key creates a clustered index on the column. Primary Key does not allow Nulls. Create table with Primary Key: CREATE TABLE Authors ( AuthorID INT NOT NULL PRIMARY KEY, Name VARCHAR(100) NOT NULL ) GO…
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