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SQL Escape Sequences
 

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 following language features:
Date, time, timestamp, and datetime literals
Scalar functions such as numeric, string, and data type conversion functions
Outer joins