How do I count two different columns in SQL?

How do I count two different columns in SQL?

There are several things you can count with COUNT() function:

1. count(*) : rows.
2. count(col1) : rows where col1 is not null.
3. count(col2) : rows where col2 is not null.
4. count(distinct col1) : distinct col1 values.
5. count(distinct col2) : distinct col2 values.

How do I count one column in SQL?

SQL COUNT() Function

1. SQL COUNT(column_name) Syntax. The COUNT(column_name) function returns the number of values (NULL values will not be counted) of the specified column:
2. SQL COUNT(*) Syntax. The COUNT(*) function returns the number of records in a table:
3. SQL COUNT(DISTINCT column_name) Syntax.

How to count matches between two columns in Excel?

Count matches between two columns. If you want to compare two columns and count matches in corresponding rows, you can use the SUMPRODUCT function with a simple comparison of the two ranges. For example, if you have values in B5:B11 and C5:C11 and you want to count any differences,…

How to select count of rows in another table?

I think the comment by @intgr in another answer is so valuable I’m putting forward this as an alternate answer as this method allows you to filter the calculated column efficiently.

How to count unique values based on another column in Excel?

To count the unique values based on two columns, please apply the below formula, after entering the formula, please press Ctrl + Shift + Enter keys together to get the correct result. Please try, hope it can help you! To post as a guest, your comment is unpublished.

How to calculate the sum of two ranges in Excel?

Summary. To compare two ranges, and count total matches between the two ranges, you can use a formula that combines the COUNTIF function with the SUMPRODUCT function. In the example shown, the formula in cell G7 is: = SUMPRODUCT(COUNTIF( B5:B11, D5:D11 ))