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25 maj 2011 · Two options: Use the LIKE keyword, along with percent signs in the string. select * from table where field like '%a%' or field like '%b%'.
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.
15 wrz 2019 · You need to do it in two steps, first generate the sql like (assuming your table is named T in schema S: select concat(' SELECT * FROM t WHERE ''a'' in (' , GROUP_CONCAT(COLUMN_NAME) , ')') from INFORMATION_SCHEMA.columns where table_schema = 's' and table_name = 't' and DATA_TYPE IN ('char','varchar');
SELECT `post_name` , `post_title` FROM `_ZRZ_posts` WHERE `post_content` LIKE '% mailkit %' OR ' smtp '; SELECT `post_name` , `post_title` FROM `_ZRZ_posts` WHERE `post_content` LIKE '% mailkit %' AND ' smtp '; In the above example, we get the names of all posts where the post contains matching fields called “mailkit” or “SMTP” in the ...
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 ...
Introduction to MySQL WHERE clause. The WHERE clause allows you to specify a search condition for the rows returned by a query. The following shows the syntax of the WHERE clause: SELECT . select_list. FROM . table_name. WHERE . search_condition; Code language: SQL (Structured Query Language) (sql)
MySQL has many built-in functions. This reference contains string, numeric, date, and some advanced functions in MySQL.
