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SELECT ads.*, location.county FROM ads LEFT JOIN location ON location.county = ads.county_id WHERE ads.published = 1 AND ads.type = 13 AND ( ads.county_id = 2 OR ads.county_id = 5 OR ads.county_id = 7 OR ads.county_id = 9 )
The MySQL WHERE Clause. The WHERE clause is used to filter records. It is used to extract only those records that fulfill a specified condition. 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.! Demo Database.
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)
17 lip 2024 · WHERE Clause in MySQL is a keyword used to specify the exact criteria of data or rows that will be affected by the specified SQL statement. The WHERE clause can be used with SQL statements like INSERT, UPDATE, SELECT, and DELETE to filter records and perform various operations on the data.
To filter data by multiple conditions in a WHERE clause, use the AND operator to connect the conditions. Here’s what this looks like for two conditions: WHERE condition1 AND condition2. In our example, condition1 is dept = 'Finance' and condition2 is salary > 4000.
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.
1 gru 2015 · Column numbers contains 02-12-20-57-84 where - is the separator. Example: a user ticks checkbox 02, 12 and 20. so my query would be SELECT * FROM results WHERE numbers LIKE "%02%" AND numbers LIKE "%12%" AND numbers LIKE "%20%";
