The ISDATE function tests if a string can be converted to a date. For more information, see “ISDATE function [Date and time]” in Sybase IQ Reference Manual.
The ISNUMERIC function tests if a string can be converted to a number. ISNUMERIC is processed by the Adaptive Server Anywhere portion of IQ, so CIS functional compensation performance considerations apply. For more information, see “ISNUMERIC function [Miscellaneous]” in Sybase IQ Reference Manual.
