> # A SQL Escape Sequences

> Language features, such as outer joins and scalar function calls, are commonly implemented by database systems. The syntax for these features is often database-specific, even when a standard syntax has been defined. ODBC and JDBC define escape sequences that contain standard syntaxes for the language features in Table A-1.

> NOTE: The .NET data provider supports ODBC/JDBC SQL escape sequences, except where otherwise noted.

> Table A-1. Language Features
> Language Feature | SequeLink Client for ODBC | SequeLink Client for JDBC | SequeLink Client for .NET
> --- | --- | --- | ---
> Date, time, and timestamp literals | X | X | X
> Scalar functions such as numeric, string, and date type conversion functions | X | X | X
> LIKE predicate escape characters | X | X |
> Outer joins | X | X | X
> Procedure call escape sequences | X | X |

> The escape sequence is recognized and parsed by the driver or data provider, which replaces the escape sequences with data store-specific grammar.