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You can try using parentheses around the OR expressions to make sure your query is interpreted correctly, or more concisely, use IN: 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 IN (2,5,7,9)
8 wrz 2016 · I want to use names selected from a multiple selection listbox, which I can retrieve the values, and then do a where clause so it shows the song names that the selected people can all play, therefore status is complete.
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.
19 maj 2024 · Comparison operators such as =, <, >, <=, and >= allow you to compare values in your database and retrieve only the records that satisfy the specified conditions. For example, you can use the = operator to filter records where a certain column equals a specific value.
1 gru 2015 · Now you can index on the value column and that should dramatically speed things up. Your query would then look like this: SELECT result_id FROM TableName WHERE VALUE IN ('02','12','20') GROUP BY result_id HAVING COUNT(1) >= 3
The SQL WHERE Clause. The WHERE clause is used to filter records. It is used to extract only those records that fulfill a specified condition. Example. Select all customers from Mexico: SELECT * FROM Customers WHERE Country='Mexico'; Try it Yourself » Syntax. SELECT column1, column2, ... FROM table_name WHERE condition;
19 wrz 2024 · In SQL, querying multiple values in the same column is a common task that can be efficiently handled using the IN, OR and EXISTS operators. These operators allow to filter rows based on the multiple matching criteria within a single column.
