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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)
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;
Given that you have two tables, not two databases, the easiest way to match multiple values for a specific column would be the following: SELECT * FROM posts WHERE userid IN (44,44,33,44,33,0) *A small point that I ran into when doing this.
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.
The most simple one is the equal operator. You can compare any data type column using the equal operator. For example: SELECT apple_variety, tons_produced FROM apples WHERE year = 2019. After executing the SQL the database returns the records where the year column is 2019:
The SQL "Equals To" operator, denoted as "=", is a fundamental operator used to compare values in a database table. It is employed in SQL queries to filter and retrieve data where a specific column's value matches a given criteria.
