Distinguishing BETWEEN from =
In SQL Server 2000 and 2005, the BETWEEN operator and the combination of = operators in a WHERE clause present distinct functionalities.
The BETWEEN operator, as exemplified in Query 1, is a shorthand notation for specifying a range of values, including both the lower and upper bounds. This makes it a convenient option when searching for values between two specific dates, as in the example provided.
Alternatively, the combination of = operators, as seen in Query 2, specifies a range where only one end is inclusive. This approach is typically used when one or both endpoints should be excluded from the selection criteria. For instance, Query 2 would select events that occur on the dates 10/15/2009 through 10/17/2009, excluding those on 10/18/2009.
Considerations for DATETIME Values
When dealing with DATETIME values, however, the BETWEEN operator and the combination of = operators behave differently. With DATETIME, the comparison is based on the full date and time, including seconds. This means that Query 1, which specifies a range between '10/15/2009' and '10/18/2009', will return only events that occur before midnight on 10/18/2009, effectively excluding any events on that day.
To ensure accuracy when working with DATETIME, specify both the date and time during comparison. For instance, to capture all events on 10/18/2009, use a BETWEEN expression that specifies '10/18/2009 00:00' as the lower bound and '10/18/2009 23:59:59' as the upper bound.
The above is the detailed content of BETWEEN vs. = in SQL Server: What's the Difference?. For more information, please follow other related articles on the PHP Chinese website!

This article addresses MySQL's "unable to open shared library" error. The issue stems from MySQL's inability to locate necessary shared libraries (.so/.dll files). Solutions involve verifying library installation via the system's package m

This article explores optimizing MySQL memory usage in Docker. It discusses monitoring techniques (Docker stats, Performance Schema, external tools) and configuration strategies. These include Docker memory limits, swapping, and cgroups, alongside

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

This article compares installing MySQL on Linux directly versus using Podman containers, with/without phpMyAdmin. It details installation steps for each method, emphasizing Podman's advantages in isolation, portability, and reproducibility, but also

This article provides a comprehensive overview of SQLite, a self-contained, serverless relational database. It details SQLite's advantages (simplicity, portability, ease of use) and disadvantages (concurrency limitations, scalability challenges). C

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

This guide demonstrates installing and managing multiple MySQL versions on macOS using Homebrew. It emphasizes using Homebrew to isolate installations, preventing conflicts. The article details installation, starting/stopping services, and best pra

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

SublimeText3 Chinese version
Chinese version, very easy to use
