This section describes general rules for using functions and operators Ensure the general rules are followed when using functions and operators to develop applications.
Specify the stated numbers for arguments when specifying numbers for arguments in functions.
Specify the stated data types when specifying data types for functions. If you use a data type other than the stated data types, use CAST to explicitly convert the data type.
Specify data types that can be compared when specifying data types for operators. If you use a data type that cannot be compared, use CAST to explicitly convert the data type.
See
Refer to "Functions and Operators" under "The SQL Language" in the PostgreSQL Documentation for information on the functions and operators available with Symfoware Server.
