Sybase 12.4.2 User Manual

Page 511

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CHAPTER 14 Adaptive Server IQ as a Data Server

491

Characteristics of Open Client and jConnect
connections

When Adaptive Server IQ is serving applications over TDS, it automatically
sets relevant database options to values that are compatible with Adaptive
Server Enterprise default behavior. These options are set temporarily, for the
duration of the connection only. They can be overridden by the client
application at any time.

Default settings

The database options that are set on connection using TDS are as follows:

How the startup
options are set

The default database options are set for TDS connections using a system
procedure named

sp_tsql_environment

. This procedure sets the following

options:

SET TEMPORARY OPTION TSQL_VARIABLES=’ON’;

SET TEMPORARY OPTION ANSI_BLANKS=’ON’;

SET TEMPORARY OPTION TSQL_HEX_CONSTANT=’ON’;

SET TEMPORARY OPTION CHAINED=’OFF’;

SET TEMPORARY OPTION QUOTED_IDENTIFIER=’OFF’;

SET TEMPORARY OPTION ALLOW_NULLS_BY_DEFAULT=’OFF’;

SET TEMPORARY OPTION AUTOMATIC_TIMESTAMP=’ON’;

SET TEMPORARY OPTION ANSINULL=’OFF’;

SET TEMPORARY OPTION CONTINUE_AFTER_RAISERROR=’ON’;

SET TEMPORARY OPTION FLOAT_AS_DOUBLE=’ON’;

SET TEMPORARY OPTION ISOLATION_LEVEL=’1’;

Option

Set to

ALLOW_NULLS_BY_DEFAULT

OFF

ANSINULL

OFF

AUTOMATIC_TIMESTAMP

ON

CHAINED

OFF

CONTINUE_AFTER_RAISERROR

ON

DATE_FORMAT

YYYY-MM-DD

DATE_ORDER

MDY

ESCAPE_CHARACTER

OFF

ISOLATION_LEVEL

1

FLOAT_AS_DOUBLE

ON

QUOTED_IDENTIFIER

OFF

TIME_FORMAT

HH:NN:SS.SSS

TIMESTAMP_FORMAT

YYYY-MM-DD HH:NN:SS.SSS

TSQL_HEX_CONSTANT

ON

TSQL_VARIABLES

ON

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