A new SQL developer can build skill in a clear order: relational basics, T-SQL, data modeling, plans, testing, and safe deployment habits.
SQL Server emergency? Email pinal@sqlauthority.com with URGENT in the subject line.
Connecting Java Applications With the JDBC Driver
Choose a current JDBC driver for SQL Server, verify its connection URL and encryption settings, and test integrated authentication on the app host.
SQL SERVER – Checklist for Analyzing Slow-Running Queries
Before you call support, go through this Books Online checklist for analyzing slow-running queries: network, memory, statistics, indexes and more.
SQL SERVER – Force Index Scan on Table – Use No Index to Retrieve the Data – Query Hint
How do you force index scan instead of a seek, or read a table without using any index? Two reader questions with a similar answer, using a query hint.
SQL Injection: How It Works and How to Stop It
Prevent SQL injection by separating values from command text, parameterizing dynamic SQL, and validating object names before using QUOTENAME.
SQL SERVER – Improve Performance by Reducing IO – Creating Covered Index
My T-SQL Tuesday #004 post on how a covered index can improve performance by reducing IO. Run the demo on a test server only, never on production.
ATN2: Keep the Quadrant When Calculating an Angle
ATN2 uses two components to calculate an angle while retaining its quadrant. I keep the argument order and angle unit visible. Dividing one component by the other would lose useful information and introduce a zero-denominator case.
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