OpenEdge Data Management: DataServer for Microsoft SQL Server

RDBMS Stored Procedure Details
3–4
As previously noted in Table 3–1, you can pass data types in the RUN STORED-PROCEDURE
statement using the PARAM phrase. Table 3–2 lists issues that occur when you pass certain data
types as parameters.
Table 3–2: Argument data types for stored procedures
OpenEdge MS SQL Server data source
DECIMAL
INTEGER
INT64
Note these stored procedure points:
The DataServer converts each of these data types in the schema image
to the equivalent default OpenEdge data type as follows:
• DECIMAL=DECIMAL(default), or Float
• INTEGER=INTEGER
• INT64=BIGINT
However, you can use the Data Dictionary to update the data type and
format information in the field property sheet for the parameter.
CHAR The data source represents this type as a VARCHAR parameter. Its size
cannot exceed the VARCHAR size limit for the associated data source. If
the VARCHAR parameter exceeds this limit, it causes an error.
DATE If you pass a DATE data type as an input parameter and use it in an
equality test, the test might fail. In this case, use DATEPART() or
DATEDIFF() in the Transact-SQL of your native stored procedure to
isolate parts of the date structure for which you might want to test.
DATETIME You can specify a DATETIME data type in a temp table used to receive
results from a stored procedure using the LOAD-RESULT-INTO phrase.
• Input and output parameters are displayed as fields.
• Stored procedures called from within OpenEdge applications cannot return Boolean
values to LOGICAL data types.
• If you are running several stored procedures, run them serially and process all the results
from one stored procedure and close the procedure before you run a second one. By
default, the DataServer allows one active request for running a stored procedure. It is not
necessary to specify the PROC-HANDLE phrase when procedures are run serially.
When you run stored procedures concurrently, the DataServer uses one connection to the data
source per procedure. If different stored procedures attempt to update the same record from a
single client’s requests, the connections could block each other or a deadlock might occur.
Notes: You must define a PROC-HANDLE phrase for each stored procedure phrase that is
simultaneously active. This technique provides a CLOSE STORED-PROC statement that
can identify the targeted open procedure and close it.
In contrast, since a stored procedure executed with the LOAD-RESULT-INTO phrase
implicitly closes the procedure once the execution ends and the data retrieved is placed
into temp tables, it essentially runs serially and has no use for a PROC-HANDLE.
• When you create or update your schema image, the stored procedures appear in the list of
accessible objects along with tables, view, and sequences. OpenEdge allows you to run the
stored procedures that you create in data sources using the procedure definitions in your