Question

I’m trying to write a mysql query such that I can retreieve the first 10 rows of a table and get the total row count in the same query.

i.e. combine

SELECT * FROM myTable LIMIT 10; // Get First 10 Rows

and

SELECT COUNT(*) as cnt FROM myTable // Total Row Count

in the same query.

Since I’m using PHP, technically I could execute :

SELECT * FROM myTable

Then use count() to get total row count and array_slice to get first 10 array elements.

But that doesn’t sound very efficient.

Answer 1

SELECT SQL_CALC_FOUND_ROWS * FROM myTable LIMIT 10;

SELECT FOUND_ROWS();

It’s not exactly in one query, but the second query is always the same and it won’t have to execute the complete previous query again, which is good if it is a complex query.

It’s the SQL_CALC_FOUND_ROWS clause in the first query that causes the total number of records to be calculated as if the limit wasn’t added.