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- Can you use count with multiple columns?
- How to get count of multiple columns in Oracle?
- How do I count specific columns in SQL?
Can you use count with multiple columns?
Obviously, COUNT(DISTINCT) with multiple columns counts unique combinations of the specified columns' values. However, one other important point is that a tuple is counted only if none of the individual values in the tuple is null.
How to get count of multiple columns in Oracle?
In Oracle DB, you can concat the columns and then count on that concatenated String like below: SELECT count(DISTINCT concat(ColumnA, ColumnB)) FROM TableX; In MySql, you can just add the columns as parameters in count method. Save this answer.
How do I count specific columns in SQL?
In SQL, you can make a database query and use the COUNT function to get the number of rows for a particular group in the table. Here is the basic syntax: SELECT COUNT(column_name) FROM table_name; COUNT(column_name) will not include NULL values as part of the count.
