Description
Specifies how PowerBuilder formats the SQL syntax for outer joins for the database back end you are accessing.
Applies to
ADO.NET
ASE, SYC SAP Adaptive Server Enterprise
INF Informix
IN9 Informix
ODBC
OLE DB
O90 Oracle9i
O10 Oracle 10g
SNC SQL Native Client for Microsoft SQL Server
MSOLEDBSQL Microsoft OLE DB Driver for SQL Server
Syntax
OJSyntax=value
|
Parameter |
Description |
|---|---|
|
value |
Specifies how you want SQL syntax to be formatted. Values are:
|
Default value
OJSyntax=ANSI for IN9, SNC, ASE, and SYC, OJSyntax=ANSI_ESCAPE for ADO.NET, ODBC, and OLE DB, OJSyntax=PB for O90 and O10.
Usage
All PowerBuilder database interfaces provide support for ANSI SQL-92 outer join SQL syntax generation. PowerBuilder supports both left and right outer joins in graphics mode and full outer and inner joins in syntax mode.
You must set the OJSyntax parameter to indicate the version of outer join SQL syntax you want PowerBuilder to generate. For ADO.NET, ODBC, and OLE DB, the default is ANSI_Escape and can be reset to ANSI or PB (native). For IN9, SNC, ASE, and SYC, the default is ANSI and can be reset to PB. For O90 and O10, the default is PB, which means use Oracle native outer join syntax, and can be reset to ANSI.
OJSyntax is a dynamic parameter in all database drivers that support it. It can therefore be changed at any time during the life of a database connection with a statement such as:
SQLCA.DBParm="OJSyntax='ANSI_ESCAPE' "
Define outer joins in the SQL Select painter for portability
When you define an outer join SELECT statement graphically in the SQL Select painter, the DataWindow object stores the SQL in pseudocode. At runtime, the outer join syntax is generated based on the current OJSyntax parameter setting. This provides some degree of portability for DataWindow objects among multiple DMBSs.
When you define an outer join SELECT statement in syntax mode, the DataWindow object stores the SQL as syntax. This syntax is used without modification at runtime. The OJSyntax parameter setting does not affect the SQL.
Using native outer join syntax
The option PB generates native outer join syntax. It is available for ODBC and OLE DB only if PBOuterJoin and PBOuterJoinOperator syntax entries are set in the appropriate SYNTAX section for your DBMS in the %systemdrive%\Program Files (x86)\Appeon\Common\PowerBuilder\Runtime [version]\pbodb.ini or %systemdrive%\Program Files (x86)\Appeon\Common\PowerBuilder\Runtime [version]\x64\pbodb.ini file.
When you upgrade applications from PowerBuilder 7 and earlier versions of PowerBuilder, using ANSI outer join syntax might produce errors, depending on how the joins were defined in the painter. If a table is joined to multiple other tables with right outer joins, a valid ANSI outer join statement cannot be generated.
For more information about outer joins, see the section on using ANSI outer joins in the the section called “Using ANSI outer joins” in Users Guide.
Examples
To set the value of OJSyntax:
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Database profile
Select the appropriate value from the Outer Join Syntax drop-down list on the Syntax page in the Database Profile Setup dialog box.
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Application
Type the following in code:
SQLCA.DBParm="OJSyntax='ANSI'"
