Which statement of SQL is true?

What is true about the SQL statement?

Data values are displayed in descending order by default. … You cannot specify a column alias in an ORDER BY clause. d. You cannot sort query results by a column that is not included in the SELECT list.

Which of the following is the purpose of SQL?

Explanation: SQL is a query language designed for managing data held in a RDBMS, or for stream processing in a relational database management system (RDBMS).

How do you display in SQL?

The DISPLAY command must be placed immediately after the query statement on which you want it to take effect. For example: SELECT pno, pname FROM part WHERE color=’BLUE’; DISPLAY; When the system encounters this DISPLAY command, it displays the Result window containing the part number and name for all blue parts.

Is false == null in SQL?

So, null=null evaluates to not true (false or null, depending on your system), because you don’t know the values to say that they ARE equal. This behavior is defined in the ANSI SQL-92 standard. EDIT: This depends on your ansi_nulls setting. if you have ANSI_NULLS off, this WILL evaluate to true.

What can SQL not do?

The SQL NOT condition (sometimes called the NOT Operator) is used to negate a condition in the WHERE clause of a SELECT, INSERT, UPDATE, or DELETE statement.

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What does false mean in SQL?

It is a where condition to be used when the query should not return any result. Some DBMS supporting boolean values, Postgres for example, are used to work with that instead of the classic where 1=1 . Basically then, where false is the same of where 1=0 .