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A Crossword Helper in T-SQL: Matching Word Patterns With LIKE

August 1, 2013
Pinal Dave
SQL Tips and Tricks
SQL Operator, SQL Scripts, SQL Server, SQL String

Match word patterns with LIKE and SUBSTRING, build sorted-letter anagram signatures, and use a leading-letter index for crossword searches.

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Adding System Versioning to a Table That Already Has Rows

July 31, 2013
Pinal Dave
SQL Tips and Tricks
SQL Server, SQL Table Operation, Temporal Table

Turning on temporal history for a table that already has data does not rebuild the past. Here is the clean way to do it, and the traps to avoid.

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Two hands taking blocks from two sorted bins, one of cubes and one of cylinders, beside a messy heap of blocks.

Rewriting OR Conditions So the Index Gets Used

July 29, 2013
Pinal Dave
SQL Performance
Execution Plan, SQL Index, SQL Performance, SQL Server, SQL Union clause

Rewrite OR conditions with separate seeks, preserve duplicate and NULL behavior, and compare plans before choosing UNION or recompilation.

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SSRS Parameters That Do Not Slow Reports

July 28, 2013
Pinal Dave
SQL Performance
Parameter Sniffing, Reporting Services, SQL Performance, SQL Reports, SQL Server

SSRS parameters work best with selective defaults, compact value lists, and SQL queries that preserve useful indexes under real filters.

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Why DBCC SHRINKFILE Crawls and How to Watch Its Progress

July 27, 2013
Pinal Dave
SQL Tips and Tricks
Shrinking Database, SQL Data Storage, SQL Server, SQL Server DBCC

Explain why DBCC SHRINKFILE can take hours, monitor percent_complete and waits, and use TRUNCATEONLY before small steps.

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Open file drawer full of folders, a data source for reports

SQL SERVER – Data Sources and Data Sets in Reporting Services SSRS

July 26, 2013
Pinal Dave
SQL Tips and Tricks
Reporting Services, SQL Server

Before a report can show anything, it has to reach the data. Kathi Kellenberger explains data sources and data sets in SSRS in simple words.

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Compatibility Level 170: What SQL Server 2025 Turns On

July 26, 2013
Pinal Dave
SQL Tips and Tricks
Compatibility Level, Query Store, SQL Server, SQL Upgrade

Move to compatibility level 170 on SQL Server 2025 with feature checks, Query Store baselines, plan comparisons, and a rollback plan.

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