What does SELECT 1 in MySQL mean?

What does SELECT top 1 mean in SQL?

The TOP 1 means to only return one record as the result set. which record is returned, depends on the column that is specified in the order by clause. If you want to find the record with the minimum value for a particular column, you would query the record with the ORDER BY being ascending (ASC).

What is the difference between SELECT * and SELECT 1?

Select * from any table will fetch and display all the column in that table, while Select 1 from any table will display one row with 1 without any column name.

What does 1 mean in SQL?

This answer is not useful. Show activity on this post. WHERE 1 is a synonym for "true" or "everything." It's a shortcut so they don't have to remove the where clause from the generated SQL.

What does SELECT 1 from dual do?

When you select an expression say 1 from a table (can be dual or any other table), it will return the expression depending on the number of rows in the table. Eg:- Select 1 from dual; returns 1 as there is only one record in dual.