By default, Adaptive Server Enterprise and Sybase IQ give different meanings to delimited strings: that is, strings enclosed in apostrophes (single quotes) and in quotation marks (double quotes).
Sybase IQ employs the SQL92 convention, that strings enclosed in apostrophes are constant expressions, and strings enclosed in quotation marks (double quotes) are delimited identifiers (names for database objects). Adaptive Server Enterprise employs the convention that strings enclosed in quotation marks are constants, whereas delimited identifiers are not allowed by default and are treated as strings.