Asked by: Fariza Chumpitazasked in category: General Last Updated: 12th March, 2020
What is the return type of select statement in SQL?
Also question is, how do you write a select statement in SQL?
A query may retrieve information from specified columns or from all of the columns in the table. To create a simple SQL SELECT Statement, you must specify the column(s) name and the table name. The whole query is called SQL SELECT Statement.
Subsequently, question is, how do you write multiple select statements in SQL? The UNION operator is used to combine the result-set of two or more SELECT statements.
- Each SELECT statement within UNION must have the same number of columns.
- The columns must also have similar data types.
- The columns in each SELECT statement must also be in the same order.
Moreover, which SQL statement is used to return only different values?
The SQL SELECT DISTINCT Statement 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.
Which clause is required in a select statement?
SELECT Statement. The SELECT statement is used to query the database and retrieve selected data that match the criteria that you specify. The SELECT statement has five main clauses to choose from, although, FROM is the only required clause.