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DECODE
DECODE
Syntax
94
Compares the value of the first argument expression with each search_expression and, if a
match is found, returns the corresponding match_expression. If no match is found, then the
function returns the default_expression. If a default_expression is not specified and no
match is found, then the function returns a NULL value.
Example This example illustrates one way to use the DECODE function:
Notes • Use a simple case expression when SQL-compatible syntax is a requirement.
DEGREES
Syntax
DECODE ( expression, search_expression, match_expression
[ , search_expression, match_expression ...]
[ , default_expression ] )
SELECT ename, DECODE (deptno,
10, 'ACCOUNTS',
20, 'RESEARCH',
30, 'SALES',
40, 'SUPPORT',
'NOT ASSIGNED'
)
FROM employee ;
• The first argument expression can be of any type. The types of all search_expressions
must be compatible with the type of the first argument.
• The match_expressions can be of any type. The types of all match_expressions must be
compatible with the type of the first match_expression.
• The type of the default_expression must be compatible with the type of the first
match_expression.
• The type of the result is the same as that of the first match_expression.
• If the first argument expression is NULL, then the value of the default_expression is
returned, if it is specified. Otherwise NULL is returned.
Compatibility
Progress extension
Returns the number of degrees in an angle specified in radians by expression.
DEGREES ( expression )