USER_DEFINED_FUNCTIONS error class
User defined function is invalid:
CORRELATED_REFERENCES_IN_SQL_UDF_CALLS_IN_DML_COMMANDS_NOT_IMPLEMENTED_YET
This command includes calls to SQL user-defined function <functionName> which contains subquery expressions with correlated outer references; this feature is is not implemented yet
NOT_A_VALID_DEFAULT_EXPRESSION
The DEFAULT expression of <functionName>.<parameterName> is not supported because it contains a subquery.
NOT_A_VALID_DEFAULT_PARAMETER_POSITION
In routine <functionName> parameter <parameterName> with DEFAULT must not be followed by parameter <nextParameterName> without DEFAULT.
NOT_NULL_ON_FUNCTION_PARAMETERS
Cannot specify NOT NULL on <languageName> function parameters: <input>
SQL_TABLE_UDF_BODY_MUST_BE_A_QUERY
SQL table function <name> body must be a query.
SQL_TABLE_UDF_MISSING_COLUMN_NAMES
The relation returned by the query in the CREATE FUNCTION statement for <functionName> with RETURNS TABLE clause lacks explicit names for one or more output columns; please rewrite the function body to provide explicit column names or add column names to the RETURNS TABLE clause, and re-run the command.
SQL_UDF_RETURNS_CLAUSE
Must specify an explicit RETURNS clause for user-defined <functionType> function.
UNEXPECTED_ENVIRONMENT_SETTINGS
Unexpected environment settings for <languageName> user defined functions: <invalidKeys> (valid settings are: <validKeys>). Update the ENVIRONMENT clause and try again.