guid-escape-sequences.md

title	GUID Escape Sequences | 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	ODBC escape sequences [ODBC], GUID escape sequences [ODBC], guid guid escape sequence [ODBC]
ms.assetid	71d43ef9-4a31-493e-b9e0-f864e9ef3ce6
author	David-Engel
ms.author	v-daenge

GUID Escape Sequences

ODBC uses escape sequences for GUID literals. The syntax of this escape sequence is as follows:

{guid 'nnnnnnnn-nnnn-nnnn-nnnn-nnnnnnnnnnnn'}  

Remarks

In BNF notation, the syntax is as follows:

ODBC-guid-escape ::=
ODBC-esc-initiator guid 'guid-value' ODBC-esc-terminator

ODBC-esc-initiator ::= {

ODBC-esc-terminator ::= }

guid-value ::= clock-low-value guid-separator clock-middle-value guid-separator clock-high-value guid-separator clock-seq-value guid-separator node-value

guid-separator ::= -

clock-low-value ::= hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit

clock-middle-value ::= hex_digit hex_digit hex_digit hex_digit

clock-high-value ::= hex_digit hex_digit hex_digit hex_digit

clock-seq-value ::= hex_digit hex_digit hex_digit hex_digit

clock-node-value ::= hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit hex_digit

hex_digit ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F

The GUID literal escape sequence is supported if the GUID data type is supported by the data source. An application should call SQLGetTypeInfo to determine whether this data type is supported.