What will happen if you apply distinct on whole table?

Does distinct apply to all columns?

Yes, DISTINCT works on all combinations of column values for all columns in the SELECT clause.

Does distinct apply to all columns SQL Server?

SELECT DISTINCT FIELD1, FIELD2, FIELD3 FROM TABLE1 works if the values of all three columns are unique in the table. If, for example, you have multiple identical values for first name, but the last name and other information in the selected columns is different, the record will be included in the result set.

Can the distinct command be used for more than one column?

The DISTINCT clause can be applied to one or more columns in the select list of the SELECT statement.

How can I get distinct values from a table?

The SELECT DISTINCT statement is used to return only distinct (different) values. Inside a table, a column often contains many duplicate values; and sometimes you only want to list the different (distinct) values.