Defines stored procedure parameters. This tag is nested within a cfstoredproc tag.

Database manipulation tags

cfinsert, cfprocresult, cfquery, cfqueryparam, cfstoredproc, cftransaction, cfupdate; "Optimizing ColdFusion applications" in Chapter 13, "Designing and Optimizing a ColdFusion Application," in ColdFusion MX Developer's Guide

ColdFusion MX:

• The maxrows attribute is obsolete.
• Changed the dbvarname attribute behavior: it is now ignored for all drivers. ColdFusion MX uses JDBC 2.2 and does not support named parameters.
• Changed the maxLength attribute behavior: it now applies to IN and INOUT parameter values.

Use this tag to identify stored procedure parameters and their data types. Code one cfprocparam tag for each parameter. The parameters that you code vary based on parameter type and DBMS. ColdFusion MX supports positional parameters only and you must code cfprocparam tags in the same order as the associated parameters in the stored procedure definition.

Output variables are stored in the ColdFusion variable specified by the variable attribute.

You cannot use the cfprocparam tag for Oracle 8 and 9 reference cursors. Instead, use the cfprocresult tag.

The following example shows how to invoke an Oracle 8 PL/SQL stored procedure. It makes use of Oracle 8 support of the Reference Cursor type.

The following package, Foo_Data, houses a procedure refcurproc that declares output parameters as Reference Cursor:

• Parameter pParam1 returns the rows in the EMP table
• Parameter pParam2 returns the rows in the DEPT table

The procedure declares one input parameter as an integer, and one output parameter as a two-byte char varying type. Before the cfstoredproc tag can call this procedure, it must be created, compiled, and bound in the RDBMS environment.

CREATE OR REPLACE PACKAGE Foo_Data AS
    TYPE EmpTyp IS REF CURSOR RETURN Emp%ROWTYPE;
    TYPE DeptTyp IS REF CURSOR RETURN Dept%ROWTYPE;
 PROCEDURE refcurproc(pParam1 in out EmpTyp, pParam2 in out DeptTyp, 
pParam3 in integer, pParam4 out varchar2);
END foo_data;

CREATE OR REPLACE PACKAGE BODY Foo_Data AS
   PROCEDURE RefCurProc(pParam1 in out EmpTyp,
         pParam2 in out DeptTyp,
         pParam3 in integer,
         pParam4 out varchar2) IS
   BEGIN
      OPEN pParam1 FOR select * from emp;
      OPEN pParam2 FOR select * from dept;
      IF pParam3 = 1
      THEN
         pParam4 : = 'hello';
      ELSE
         pParam4 : = 'goodbye';
      END IF;
   END RefCurProc;
END Foo_Data;

The following CFML example shows how to invoke the RefCurProc procedure using cfstoredproc, cfprocparam, and cfprocresult:

<cfstoredproc  procedure = "foo_data.refcurproc"
   dataSource = "oracle8i" 
   username = "scott"
   password = "tiger"
   returnCode = "No">

   <cfprocparam type = "Out" CFSQLType = "CF_SQL_REFCURSOR" 
      variable = "param1">
   <cfprocparam type = "Out" CFSQLType = "CF_SQL_REFCURSOR"
      variable = "param2">
   <cfprocparam type = "IN" CFSQLType = "CF_SQL_INTEGER" value = "1">

   <cfprocparam type = "OUT" CFSQLType = "CF_SQL_VARCHAR" 
      variable = "FOO">
   <cfprocresult name = "rs1">
   <cfprocresult name = "rs2" resultSet = "2">
</cfstoredproc>

<b>The first result set:</b><br>
<hr>
<cftable query = "rs1" colHeaders HTMLTable border = "1">
   <cfcol header = "EMPNO" text = "#EMPNO#">
   <cfcol header = "EMPLOYEE name" text = "#ENAME#">
   <cfcol header = "JOB" text = "#JOB#">
   <cfcol header = "SALARY" text = "#SAL#">
   <cfcol header = "DEPT NUMBER" text = "#DEPTNO#">
</cftable>

<hr>
<b>The second result set:</b><br>

<cftable query = "rs2" colHeaders HTMLTable border = "1">
   <cfcol header = "DEPT name" text = "#DNAME#">
   <cfcol header = "DEPT NUMBER" text = "#DEPTNO#">
</cftable>
<hr>
<cfoutput>
   <b>The output parameter is:</b>'#FOO#'
</cfoutput>