where-clause Archives

MySQL, Programming

IT Nursery

Detect if value is number in MySQL

Is there a way to detect if a value is a number in a MySQL query? Such as SELECT * FROM myTable WHERE ...

May 31, 2022
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Programming, sql

IT Nursery

Left Join With Where Clause

I need to retrieve all default settings from the settings table but also grab the character setting if exists for x character. But ...

May 30, 2022
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SQL – HAVING vs. WHERE

I have the following two tables: 1. Lecturers (LectID, Fname, Lname, degree). 2. Lecturers_Specialization (LectID, Expertise). I want to find the lecturer with ...

May 21, 2022
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WHERE vs HAVING

Why do you need to place columns you create yourself (for example select 1 as "number") after HAVING and not WHERE in MySQL? ...

May 20, 2022
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What is the difference between HAVING and WHERE in SQL?

What is the difference between HAVING and WHERE in an SQL SELECT statement? EDIT: I have marked Steven’s answer as the correct one ...

May 18, 2022
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How to make “case-insensitive” query in Postgresql?

Is there any way to write case-insensitive queries in PostgreSQL, E.g. I want that following 3 queries return same result. SELECT id FROM ...

May 4, 2022
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SQL JOIN – WHERE clause vs. ON clause

After reading it, this is not a duplicate of Explicit vs Implicit SQL Joins. The answer may be related (or even the same) ...

April 20, 2022
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