Suggest to check for return row from sql query, if zero, create a datatable dynamically with the columns identical to the expected return columns of the sql query ,i.e. 0, 'no record', 0. I have never tried this before, but is there a way I can find out if a query does not return any data (with other words: if it can't find any data)? Then bind it to the gridview. Definition and Usage. If you define a CHECK constraint on a single column it allows only certain values for this column. When running joins in SQL you may encounter a problem if you are trying to pull two columns with the same name. Hi, I have a query that returns data to a DataTable. IF Function in MySQL Query If function will check one condition and if it is true then the it will return the Next expression ( 2nd one ) and if False then it will return the 3rd expression. id, description, price, then add a row with the data that you decide, i.e. I changed the query to However, if there is no results from the query I still want data returned to the DataTable. See example: 1. show-header-and-footer-rows-in-empty-row This means that if a warning occurs on a call to a SQLSRV function, the function returns false. The second option, however, worked great. I have a simple query: SELECT name FROM atable WHERE a = 1 . SQL CHECK Constraint. For information about changing this behavior, see sqlsrv_configure() and the WarningsReturnAsErrors setting. ... select SQL query to collect records from the table SQL Query return value in a field if no results found.. ... case when x.greating is null then 'nothing' else x.greating end. It … I want it to return Null if it finds nothing, but it just returns an empty set. It is generally used to check … The affected_rows / mysqli_affected_rows() function returns the number of affected rows in the previous SELECT, INSERT, UPDATE, REPLACE, or DELETE query. If a category is empty, my script does not display anything. However, warnings that correspond to SQLSTATE values 01000, 01001, 01003, and 01S02 are never treated as errors. If you define a CHECK constraint on a table it can limit the values in certain columns based on values in other columns in the row. The first suggesiton didn't work because the query always returns 1 row with 1 column, even if the value is blank. mysqli returns the last in the query when called by … I have been dealing with this for a while now. I have a page with links to other sites stored in a MySQL database in various categories. Is it possible to do this? 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