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SQL SERVER - CONCAT function and NULL values

SQL SERVER – CONCAT function and NULL values

April 11, 2015
Pinal Dave
SQL Tips and Tricks
SQL Function, SQL String

The CONCAT function and NULL values: CONCAT in SQL Server 2012 simply ignores NULL, while the + operator returns NULL. Here is a simple example.

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SQL SERVER - Interesting Function AGENT_DATETIME

SQL SERVER – Interesting Function AGENT_DATETIME

March 13, 2015
Pinal Dave
SQL Tips and Tricks
SQL DateTime, SQL Function

AGENT_DATETIME in msdb converts integer date and time values in YYYYMMDD and HHMMSS format into a datetime. Here is how it works, with examples.

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Convert Date to Julian Dates.

SQL SERVER – Script to Convert Date to Julian Dates

March 2, 2015
Pinal Dave
SQL Tips and Tricks
SQL DateTime, SQL Function, SQL Scripts, SQL Server

A Julian date is a seven digit number: the year, then the day of the year. Here is a simple DATEADD script to turn a Julian date into a datetime value.

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SQL Server DATEADD function results.

SQL SERVER – Quiz with DATEADD Function – SQL Puzzle

February 17, 2015
Pinal Dave
SQL Puzzle
SQL DateTime, SQL Function, SQL Scripts, SQL Server

A quick DATEADD Function quiz: guess what adding one month to a late January date returns before you run it in SSMS. Date math has a few pitfalls.

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A hand stacking four identical flat caps, crumpled, inside out, wet and flattened, on a lost-property shelf

Finding Near-Duplicate Rows With REGEXP_REPLACE

January 28, 2015
Pinal Dave
SQL Tips and Tricks
Duplicate Records, SQL Function, SQL Server, SQL String

Find near-duplicate rows with SQL Server 2025 normalization, group matching labels, rank survivors, and preserve originals for review.

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SQL in Sixty Seconds.

SQL SERVER – Identify and Filter In-Memory Optimized Tables – SQL in Sixty Seconds #079

January 7, 2015
Pinal Dave
SQL Video
In-Memory OLTP, SQL Error Messages, SQL Function, SQL in Sixty Seconds, SQL Server

How to identify and filter In-Memory Optimized Tables in SQL Server Management Studio, shown in a quick SQL in Sixty Seconds video.

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SQL SERVER - Schema Change Reports - SQL in Sixty Seconds #078

SQL SERVER – Schema Change Reports – SQL in Sixty Seconds #078

January 6, 2015
Pinal Dave
SQL Video
SQL Error Messages, SQL Function

A short 60 second video on Schema Change Reports, made after readers asked about it, plus links to my other posts on tracking schema changes.

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