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Description

This error indicates that a parameter passed to an SQLScript function or procedure does not match the data type defined in its signature. It typically occurs during the compilation or execution of SQLScript code within SAP HANA, often when invoking stored procedures or functions.

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Error Message

ERR_SQLSCRIPT_PARAM_WRONG_TYPE_COMPARED_TO_SIGNATURE

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Known Causes

3 known causes

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Mismatched Parameter Data Type

A value was provided with a data type that is incompatible with the expected data type of the corresponding parameter in the SQLScript object's signature.

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Signature Change Not Reflected

The signature (e.g., parameter data type) of an SQLScript function or procedure was modified, but the calling code was not updated accordingly.

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Failed Implicit Type Conversion

SAP HANA could not automatically convert the data type of the passed parameter to the required type, often due to fundamental incompatibility.

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Solutions

3 solutions available

1. Verify Parameter Data Types in Calling Program easy

Ensure the data types of parameters passed to the SQLScript match the declared types in the script's signature.

1

Identify the SQLScript that is throwing error 2846. This can typically be found in the application logs or by tracing the execution flow.

2

Examine the SQLScript's signature to understand the expected data types for each input parameter. Use the `ALTER PROCEDURE` or `CREATE PROCEDURE` syntax to view or retrieve the signature.

SELECT PARAMETER_NAME, DATA_TYPE FROM SYS. PROCEDURES_ARGUMENTS WHERE PROCEDURE_NAME = 'YOUR_PROCEDURE_NAME' AND SCHEMA_NAME = 'YOUR_SCHEMA_NAME';

3

Review the code that calls this SQLScript. This could be ABAP, another SQLScript, or a client application. For each parameter being passed, verify its data type. Pay close attention to potential implicit conversions or mismatches.

4

If a mismatch is found, adjust the data type of the parameter in the calling program to align with the SQLScript's signature. This might involve explicit type casting in the calling code.

2. Adjust SQLScript Signature for Compatibility medium

Modify the SQLScript's parameter data types to accommodate the data types being passed from the calling program.

1

Identify the SQLScript and its signature as described in Solution 1.

2

Analyze the data types of the parameters being passed from the calling program. This might require debugging the calling program or examining its source code.

3

If the calling program's data types are appropriate and cannot be easily changed, consider modifying the SQLScript's signature. Use the `ALTER PROCEDURE` statement to change the data type of the problematic parameter.

ALTER PROCEDURE YOUR_SCHEMA_NAME.YOUR_PROCEDURE_NAME ( IN PARAM_NAME NEW_DATA_TYPE, ... );

4

Test the modified SQLScript thoroughly after the change to ensure it functions correctly with the new parameter type and doesn't introduce new issues.

3. Investigate Implicit Type Conversions and Precision Issues advanced

Deep dive into potential implicit data type conversions or precision differences that might be causing the mismatch.

1

Identify the SQLScript and the specific parameter causing the error.

2

Examine the data types involved. For example, a `DECIMAL` in the signature might be receiving a `FLOAT` from the caller, leading to precision loss or unexpected behavior. Or a `VARCHAR` might be receiving a `NVARCHAR` with different character set implications.

3

If implicit conversions are suspected, explicitly cast the data types in either the calling program or within the SQLScript itself to ensure a clear and intended conversion.

In calling program (example in ABAP):
DATA lv_value TYPE p DECIMALS 2.
...
CALL FUNCTION 'YOUR_RFC_FUNCTION'
  EXPORTING
    iv_parameter = lv_value
  IMPORTING
    ...
.

In SQLScript:
CREATE PROCEDURE YOUR_SCHEMA_NAME.YOUR_PROCEDURE_NAME ( IN param_name VARCHAR(50) )
AS
BEGIN
  -- Example of explicit casting if receiving from a different type
  DECLARE v_casted_value DECIMAL(10,2) := CAST(param_name AS DECIMAL(10,2));
  ...
END;

4

Consider the length and precision of character and numeric types. A mismatch in these aspects can also lead to this error.

5

If the issue persists, consider creating a temporary table with the exact data types of the calling program's parameters and then passing this table as a single parameter (if the SQLScript is designed to accept table types) or carefully mapping its columns to individual parameters after conversion.

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Related Errors

5 related errors

SAP S/4HANA Error 2846: SQLScript Parameter Type Mismatch