Any solution you guys have come by would be great. Best way to check if record exists or not in MySQL. PHP; MySQL Server; 6 Comments. Stack Exchange Network. But you can fake it, at least in MySQL 5 or later, by querying the database meta-data do see if the column exists, and drop it if it does. I need to check if a row exists, and update it if it does, or insert it if it doesn't. Check if column exists in mysql table with php. ALTER TABLE Task ADD Name varchar(200); thats the code that causes the problem because its trying to add an existing column. The EXISTS operator returns true if the subquery contains any rows. 1 Solution. Last Modified: 2012-04-10. Here is another alternate script for the same. I have a procedure that should check if a record exists or not for particular date range, if exists then fetch the record else fetch last 20 record. IF COL_LENGTH('Person.Address', 'AddressID') IS NOT NULL PRINT 'Column Exists' ELSE PRINT 'Column doesn''t Exists' Well, that is the answer of this question. How can I add column to table only if column does not exist? Hello, I'm sure this is a very standard problem but I can't get my query right. The reason is that the EXISTS operator works based on the “at least found” principle. It is very common for DBA to use above script when they want to add a new column with the script to any table. You want to check if column exist in table Orders. The SQL EXISTS Operator. Viewed 22k times 5. Check for an existing column, if it exists we dont do anything, else we create the column. The EXISTS operator is used to test for the existence of any record in a subquery. In C# code I used this syntax like below. Questions: Is there a way to check if a table exists without selecting and checking values from it? The query that uses the EXISTS operator is much faster than the one that uses the IN operator.. May 28, 2018 Mysql Leave a comment. -- this is the scenario I want to achieve. The EXISTS operator terminates the query processing immediately once it finds a row, therefore, you can leverage this feature of the EXISTS operator to improve the query performance.. SQL EXISTS operator example. If exist, then do this else do that. Otherwise, it returns false. Code Behind - c#. Active 1 year, 8 months ago. However, because you need an IF statement, it will need to be a stored procedure. Thanks for any help. Ask Question Asked 3 years, 3 … Solution MySQL Syntax SHOW COLUMNS FROM eComm.Orders LIKE 'BaseOrderGrandTotal'. For some reason, the same facility does not exist in MySQL for dropping a column if it exists. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, ... Magento : How to Check if Mysql Column Exists? Option 2: Using sys.columns. 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