What can a SELECT clause Return?

Question

The SQL SELECT statement returns a result set of records, from one or more tables. A SELECT statement retrieves zero or more rows from one or more database tables or database views. In most applications, SELECT is the most commonly used data manipulation language (DML) command.

What is the use of SELECT clause?

The WHERE clause is used with SELECT statement to return only those rows from the table, which satisfy the specified condition in the query. In SQL, the WHERE clause is not only used with SELECT, but it is also used with other SQL statements such as UPDATE, ALTER, and DELETE statements.

What all are the clause possible in SELECT statement?

The SELECT clause specifies the table columns that are retrieved. The FROM clause specifies the tables accessed. The WHERE clause specifies which table rows are used. The WHERE clause is optional; if missing, all table rows are used.

What would you use in the SELECT clause to return all the columns in the table?

The SELECT clause allows us to specify a comma-separated list of attribute names corresponding to the columns that are to be retrieved. You can use an asterisk character, *, to retrieve all the columns.

What is the meaning of the SELECT clause?

The SELECT clause defines the list of attributes on the records produced by the statement. Its syntax is as follows: SELECT AS [, AS ]* For example: SELECT Sum(Amount) AS TotalSales.

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