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SUM
Note Each char_expression and the result can contain multi-byte characters. The start_pos
argument specifies the character position, not a byte position. Character comparisons are case
sensitive and are determined by sort weights in the collation table in the database.
SUM
Syntax
SELECT C1, C2, SUFFIX(C1, 6, '.') FROM T1;
C1 C2 SUFFIX(C1,6,.
-- -- -------------
test.pref .
pref.test s
2 records selected
SELECT C1, C2, SUFFIX(C1, 1, C2) FROM T1;
C1 C2 SUFFIX(C1,1,C
-- -- -------------
test.pref . pref
pref.test s t
2 records selected
Compatibility
Progress extension
Returns the sum of the values in a group. The keyword DISTINCT specifies that the duplicate
values are to be eliminated before computing the sum.
SUM ( { [ALL] expression } | { DISTINCT column_ref } )
Example This example illustrates the SUM function:
SELECT SUM (amount)
FROM orders
WHERE order_date = SYSDATE ;
Notes • The argument column_ref or expression can be of any type.
• The result of the function is of the same data type as that of the argument except that the
result is of type INTEGER when the argument is of type SMALLINT or TINYINT.
• The result can have a NULL value.
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