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Description

Error 1284, ERR_SQLSCRIPT_DUP_PARAMETERS, indicates that a SQLScript object (such as a stored procedure or function) has been defined with two or more parameters sharing the exact same name within its signature. This is a fundamental syntax violation in SQLScript. This error typically occurs during the activation, compilation, or execution of SQLScript objects when the system detects the invalid parameter definition.

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Error Message

ERR_SQLSCRIPT_DUP_PARAMETERS: Duplicate parameters are not permitted

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Known Causes

3 known causes

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Typographical or Copy-Paste Error

A developer might accidentally duplicate a parameter name while manually writing or copying sections of SQLScript code, leading to an immediate syntax conflict.

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Incomplete Code Refactoring

During the process of modifying or refactoring existing SQLScript, a parameter might be renamed, but a new parameter is inadvertently introduced with the original, now conflicting, name.

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Misunderstanding SQLScript Syntax Rules

The developer might not be fully aware that SQLScript strictly prohibits duplicate parameter names within the same procedure or function signature, irrespective of case or data type.

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Solutions

3 solutions available

1. Identify and Remove Duplicate Parameters in Stored Procedures/Functions medium

Locate and eliminate duplicate input/output parameters within your SQLScript code.

1

Identify the SQLScript object (stored procedure or function) that is causing the error. This is usually indicated in the surrounding error messages or logs.

2

Access the source code of the identified SQLScript object. This can be done using SAP HANA Studio, SAP Business Application Studio, or by querying the system views.

SELECT TOP 1 * FROM SYS.OBJECT_CODE WHERE OBJECT_NAME = '<your_procedure_or_function_name>' AND SCHEMA_NAME = '<your_schema_name>'

3

Carefully examine the parameter list in the `CREATE PROCEDURE` or `CREATE FUNCTION` statement. Look for parameters with identical names.

Example of problematic code:
CREATE PROCEDURE MY_PROC ( IN param1 INT, IN param1 VARCHAR(50), OUT result VARCHAR(100) )

4

Rename or remove the duplicate parameter. Ensure that each parameter has a unique name and that the data types are appropriate for their intended use.

Example of corrected code:
CREATE PROCEDURE MY_PROC ( IN param1_int INT, IN param1_str VARCHAR(50), OUT result VARCHAR(100) )

5

Recompile and redeploy the modified SQLScript object. Test the functionality to ensure the error is resolved.

2. Review and Correct Calling Programs/Applications medium

Ensure that the programs calling the SQLScript object are passing parameters correctly without duplicates.

1

Identify the program or application that is executing the SQLScript object and triggering the error. This might be an ABAP program, a custom application, or a data integration tool.

2

Examine the code within the calling program that prepares and passes parameters to the SQLScript object. Look for any instances where the same parameter name is being provided multiple times.

Example (conceptual ABAP):
CALL METHOD lo_sql_executor->execute_procedure(
  EXPORTING
    iv_procedure_name = 'MY_PROC'
    iv_param1 = 'value1'
    iv_param1 = 'value2'  " <--- Duplicate parameter
  IMPORTING
    ev_result = lv_result
).

3

Correct the parameter passing mechanism to ensure each parameter name is unique and corresponds to the definition in the SQLScript object.

Example (conceptual ABAP - corrected):
CALL METHOD lo_sql_executor->execute_procedure(
  EXPORTING
    iv_procedure_name = 'MY_PROC'
    iv_param1_int = 'value1'
    iv_param1_str = 'value2'
  IMPORTING
    ev_result = lv_result
).

4

Re-run the calling program or application and verify that the error is no longer occurring.

3. Utilize System Views for Parameter Inspection advanced

Leverage SAP HANA system views to programmatically identify duplicate parameters in existing SQLScript objects.

1

Connect to your SAP HANA database using a SQL client that supports HANA syntax (e.g., HANA Studio, DB Explorer in SAP Business Application Studio).

2

Execute a query against the `SYS.PROCEDURES` and `SYS.FUNCTIONS` system views, joining with `SYS.PROCEDURE_PARAMETERS` and `SYS.FUNCTION_PARAMETERS` respectively, to list all parameters for each object.

SELECT 
    p.SCHEMA_NAME, 
    p.PROCEDURE_NAME, 
    pp.PARAMETER_NAME, 
    pp.PARAMETER_MODE, 
    pp.DATA_TYPE
FROM 
    SYS.PROCEDURES p
JOIN 
    SYS.PROCEDURE_PARAMETERS pp ON p.PROCEDURE_ID = pp.PROCEDURE_ID
ORDER BY 
    p.SCHEMA_NAME, p.PROCEDURE_NAME, pp.PARAMETER_NAME;

-- For functions:
SELECT 
    f.SCHEMA_NAME, 
    f.FUNCTION_NAME, 
    fp.PARAMETER_NAME, 
    fp.PARAMETER_MODE, 
    fp.DATA_TYPE
FROM 
    SYS.FUNCTIONS f
JOIN 
    SYS.FUNCTION_PARAMETERS fp ON f.FUNCTION_ID = fp.FUNCTION_ID
ORDER BY 
    f.SCHEMA_NAME, f.FUNCTION_NAME, fp.PARAMETER_NAME;

3

Analyze the results of the query. Look for rows with the same `SCHEMA_NAME`, `PROCEDURE_NAME` (or `FUNCTION_NAME`), and `PARAMETER_NAME`. This indicates a duplicate parameter.

4

For each identified duplicate, use the `ALTER PROCEDURE` or `ALTER FUNCTION` statement (if supported for parameter renaming in your HANA version) or drop and recreate the procedure/function with corrected parameter names.

Example of recreating a procedure:
-- First, drop the existing procedure
DROP PROCEDURE MY_PROC;

-- Then, create it with unique parameter names
CREATE PROCEDURE MY_PROC (
    IN param1_int INT,
    IN param1_str VARCHAR(50),
    OUT result VARCHAR(100)
)
LANGUAGE SQLSCRIPT AS
BEGIN
    -- Procedure logic here
END;

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Related Errors

5 related errors

SAP S/4HANA Error 1284: Duplicate SQLScript Parameters