![]() ![]() See the following example: SELECT prodname FROM products LIMIT 5 The above statement uses the SELECT statement to retrieve a single column. In our example, LIMIT 3 produced a result set containing three rows. It can be used in conjunction with the SELECT, UPDATE OR DELETE commands. While you have 'LIMIT 10' what you actually want is 50 rows (or less if there are fewer than 5 historical), is that right 10 products, joined to 5 historical records, returning 50 total rows. (Even ORDER BY should be listed before LIMIT.) The only required argument is the number of rows to display. The limit keyword is used to limit the number of rows returned in a query result. The use of 'LIMIT' limits the results of the query in its entirety. ![]() It is used in the SELECT statement, usually at the end of the statement. To return just the first row or rows, use the LIMIT clause. The LIMIT clause limits the number of rows in the result set. What I believe will work in this situation is this instead SELECT COUNT(*), SUM(score) FROM (SELECT * FROM answers WHERE user=1 LIMIT 5) AS aīut that seems a little convoluted for such a simple query, and as it's in a high traffic script, I want it to be as performant as possible. Limit the number of rows : MySQL Limit the number of rows SELECT statements return all matched rows in the specified table. The numbers don't change whether I put LIMIT 1 or LIMIT 5 or even LIMIT 50. Instead what I seem to get back is the total number of matching rows (where user is 1) as the count, and the sum of the score for those rows. sort by the birth column, then add LIMIT 1 to retrieve the first row: mysql. What I expected back was a COUNT(*) up to 5 (I cant just assume it will always be 5 in my code logic as it could have less than 5 answers), with a sum of the score of the up to 5 rows. If you specify LIMIT 10, and the result set has only four rows. So my query is: SELECT COUNT(*), SUM(score) FROM answers WHERE user=1 LIMIT 5 What I want to do is SUM a column, but also COUNT the number of rows it is summing, with a limit of no more than 5 rows. ![]()
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