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scalar-function-escape-sequence.md

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title Scalar Function Escape Sequence | Microsoft Docs
ms.custom
ms.date 01/19/2017
ms.prod sql
ms.prod_service connectivity
ms.reviewer
ms.technology connectivity
ms.topic conceptual
helpviewer_keywords
escape sequences [ODBC], scalar function
scalar functions [ODBC], escape sequences
ODBC escape sequences [ODBC], scalar function
ms.assetid aaf5d516-e090-445f-8839-9e39581c69c7
author David-Engel
ms.author v-daenge

Scalar Function Escape Sequence

ODBC uses escape sequences for scalar functions. The syntax of this escape sequence is as follows:

{fn scalar-function}

Remarks

In BNF notation, the syntax is as follows:

ODBC-scalar-function-escape ::=

ODBC-esc-initiator fn scalar-function ODBC-esc-terminator

scalar-function ::= function-name (argument-list)

(The definitions for the nonterminals function-name and function-name (argument-list) are derived from the list of scalar functions in Appendix E: Scalar Functions.)

ODBC-esc-initiator ::= {

ODBC-esc-terminator ::= }

To determine whether the data source supports procedures and the driver supports the ODBC procedure invocation syntax, an application can call SQLGetInfo. For more information, see Appendix E: Scalar Functions.