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25 maj 2011 · 43. Two options: Use the LIKE keyword, along with percent signs in the string. select * from table where field like '%a%' or field like '%b%'. (note: If your search string contains percent signs, you'll need to escape them)
26 kwi 2023 · The WHERE clause is a critical part of any MySQL query because it allows you to filter the data in your tables based on specified criteria. The syntax of the WHERE clause is as follows: SELECT column1, column2, ... FROM table_name WHERE condition;
Returns the current MySQL username: mysql> SELECT USER( ); -> 'davida@localhost' In MySQL Versions 3.22.11 or later, this includes the client hostname as well as the username. You can extract just the username part like this (which works whether the value includes a hostname part): mysql> SELECT SUBSTRING_INDEX(USER( ),"@",1); -> 'davida ...
WHERE Syntax. SELECT column1, column2, ... FROM table_name. WHERE condition; Note: The WHERE clause is not only used in. SELECT statements, it is also used in UPDATE, DELETE, etc.!
This tutorial shows you how to use MySQL WHERE clause to filter rows based on specified conditions.
This section describes how the server recognizes whether the name of a built-in function is used as a function call or as an identifier, and how the server determines which function to use in cases when functions of different types exist with a given name.
Chapter 14 Functions and Operators. Expressions can be used at several points in SQL statements, such as in the ORDER BY or HAVING clauses of SELECT statements, in the WHERE clause of a SELECT, DELETE, or UPDATE statement, or in SET statements. Expressions can be written using values from several sources, such as literal values, column values ...
