SQL COUNT overflow

59
votes

Here is my query:

SELECT COUNT(*) FROM Similarities WHERE T1Similarity = 0 OR T2Similarity = 0

Here is the result:

Msg 8115, Level 16, State 2, Line 1

Arithmetic overflow error converting expression to data type int.

The table has 4 billion rows. I don't expect this query to be fast, but after about 5mins, it fails with an overflow error. Is there a COUNT function for bigger data than int?

Thanks.

2
sqlsql-servercountoverflow

2 Answers

130
votes

Use COUNT_BIG

SELECT COUNT_BIG(*) FROM Similarities WHERE T1Similarity = 0 OR T2Similarity = 0
24
votes
  SELECT COUNT_BIG(*) FROM Similarities WHERE T1Similarity = 0 OR T2Similarity = 0