Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I am totally new to SQL. I have a simple select query similar to this:
SELECT COUNT(col1) FROM table1 There are some 120 records in the table and shown on the GUI. For some reason, this query always returns a number which is less than the actual count.
Can somebody please help me?
You might have some null values in col1 column. Aggregate functions ignore nulls. try this