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This tutorial shows you how to use the Oracle ALL operator to compare a value with a list or subquery.
If you use the GROUP BY clause in a SELECT statement, Oracle divides the rows of a queried table or view into groups. In a query containing a GROUP BY clause, all elements of the select list must be expressions from the GROUP BY clause, expressions containing group functions, or constants.
When the ALL condition is followed by a list, the optimizer expands the initial condition to all elements of the list and strings them together with AND operators, as shown below. SELECT empno, sal. FROM emp. WHERE sal > ALL (2000, 3000, 4000); EMPNO SAL. ---------- ----------. 7839 5000.
The ALL operator: returns a boolean value as a result. returns TRUE if ALL of the subquery values meet the condition. is used with SELECT, WHERE and HAVING statements. ALL means that the condition will be true only if the operation is true for all values in the range. ALL Syntax With SELECT.
14 wrz 2017 · ALL. Specify ALL if you want the database to return all rows selected, including all copies of duplicates. The default is ALL. I don't recall off-hand if any other databases support SELECT ALL.
Set Operators: UNION, UNION ALL, INTERSECT, MINUS. The set operators combine the rows returned by two SELECT statements into a single result. The number and data types of the columns selected by each component query must be the same, but the column lengths can be different.
The SQL ALL operator is a logical operator that compares a single value with a single-column set of values returned by a subquery. The following illustrates the syntax of the SQL ALL operator: WHERE column_name comparison_operator ALL (subquery) Code language:SQL (Structured Query Language)(sql)
