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Quadratic Equations

Solving Quadratic Equations with T-SQL

July 13, 2023
Pinal Dave
SQL Tips and Tricks
Mathematical Function, SQL Function

I often find myself teaching mathematics to my daughter, and recently, she has been diving into the realm of Quadratic Equations.

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Rule of 72

SQL SERVER – Writing Function for The Rule of 72

July 12, 2023
Pinal Dave
SQL Tips and Tricks
SQL Function

I had a fascinating side conversation with a client that introduced me to a financial concept called the Rule of 72. Let us learn today.

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ISNULL and COALESCE

SQL SERVER – Difference Between ISNULL and COALESCE

June 15, 2023
Pinal Dave
SQL Tips and Tricks
SQL Function, SQL NULL, SQL Server

SQL Server provides two commonly used functions, ISNULL and COALESCE, to address this requirement. Difference Between ISNULL and COALESCE

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A hand testing eggs through a wooden sizing ring before packing them, two oversized eggs set aside in a red bowl.

TRY_CAST vs CAST: Finding Rows That Will Not Convert Before a Load

December 7, 2022
Pinal Dave
SQL Tips and Tricks
ETL, SQL Datatype, SQL DateTime, SQL Function, SQL Server

Find text values that will not convert before loading, separate invalid and missing input, and use explicit date styles and culture parsing.

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A person walking through a maize field, peeling back one cob every few rows, a small red basket on the arm

Approximate Percentiles With APPROX_PERCENTILE_CONT

October 31, 2022
Pinal Dave
SQL Tips and Tricks
SQL Function, SQL Performance, SQL Server, SQL Server 2022

Use APPROX_PERCENTILE_CONT for large response-time summaries, compare exact percentiles, and interpret the documented rank error bound.

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A line of hilltop beacon fires along a coast at dusk, one beacon in the middle dark and unlit.

Heartbeat Gaps: Finding Missing Check-Ins With LAG

June 28, 2022
Pinal Dave
SQL Tips and Tricks
SQL DateTime, SQL Function, SQL Monitoring, SQL Scripts, SQL Server

Detect missing check-ins with LAG, report closed heartbeat gaps, and find silent or never-seen sources using an explicit UTC tolerance.

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Date Variable

Performance Troubles – Function on Date Variable – SQL in Sixty Seconds #192

January 18, 2022
Pinal Dave
SQL Video
SQL DateTime, SQL Function, SQL in Sixty Seconds, SQL Performance

However, I have a really good reason to use that. Today we are going to discuss Performance Troubles – Function on Date Variable.

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