GREATEST and LEAST (SQL:2023 - T054)

[ChudaykinAlex]

Adding SQL-compliant names to existing MAXVALUE/MINVALUE functions
GREATEST and LEAST are reserved words.

<greatest or least function> ::=
    <greatest or least> <left paren> <value expression> { <comma> <value expression> }... <right paren>

 <greatest or least> ::=
    GREATEST | LEAST

SQL> select greatest(10.7, 54.2, -87, 0) from rdb$database;

             GREATEST 
===================== 
                 54.2 

SQL> select least(10.7, 54.2, -87, 0) from rdb$database;

                LEAST 
===================== 
                -87.0