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25 maj 2011 · It's best to use parentheses around them such as select * from table where (field like '%a%' or field like '%b%'). If you have other AND clauses your query might act like SELECT * FROM TABLE WHERE (A = 1 AND B =2 AND C = 3) OR (D =4) which is usually not what you want. – Maximus.
I've been trying to figure out how I can make a query with MySQL that checks if the value (string $haystack) in a certain column contains certain data (string $needle), like this: SELECT * FROM `table` WHERE `column`.contains('{$needle}')
9 lut 2024 · It's particularly useful for finding specific information in large text fields where the exact location of the data isn't known in advance. Syntax and Parameters. The basic syntax for SQL CONTAINS is as follows: CONTAINS (column_name, 'search_pattern') Key components include: Column name: The field where the search will be performed.
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 ...
Functions for Use in SELECT and WHERE Clauses. A select_expression or where_definition in a SQL statement can consist of any expression using the functions described next. An expression that contains NULL always produces a NULL value unless otherwise indicated in the documentation for the operators and functions involved in the expression.
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.
By default, a stored routine is associated with the default database. To associate the routine explicitly with a given database, specify the name as db_name.sp_name when you create it. The CREATE FUNCTION statement is also used in MySQL to support loadable functions.
