Error
Error Code:
2866
SAP S/4HANA Error 2866: SQLScript Function Already Exists
Description
This error indicates an attempt to create a SQLScript function in SAP S/4HANA when a function with the identical name and signature already exists in the current schema or database. It typically occurs during development, deployment, or migration activities involving custom SQLScript objects.
Error Message
ERR_SQLSCRIPT_FUNCTION_EXISTING
Known Causes
3 known causesAttempted Redeployment Without Drop
A developer tried to create or redeploy a SQLScript function without first dropping an existing function of the same name in the database.
Duplicate Function Name
The script attempted to define a new function using a name that is already in use by another SQLScript function within the same database schema.
Missing 'CREATE OR REPLACE'
The SQL statement used to create the function did not include the 'OR REPLACE' clause, which would allow overwriting an existing function gracefully.
Solutions
3 solutions available1. Identify and Drop the Existing SQLScript Function medium
Locate the duplicate function in the SAP HANA database and remove it.
1
Connect to your SAP HANA database using a SQL client (e.g., SAP HANA Studio, hdbsql, or DBeaver).
2
Query the system views to find the existing function. Replace 'YOUR_SCHEMA_NAME' with the actual schema where the function is expected to reside, and 'YOUR_FUNCTION_NAME' with the name of the function causing the error.
SELECT SCHEMA_NAME, FUNCTION_NAME, DEFINITION FROM _SYS_REPO.FUNCTIONS WHERE FUNCTION_NAME = 'YOUR_FUNCTION_NAME' AND SCHEMA_NAME = 'YOUR_SCHEMA_NAME';3
If the query returns a result, it confirms the existence of the function. You can then proceed to drop it. **Caution**: Ensure you are dropping the correct function and that it's not actively used by critical processes. If unsure, consult with your development or functional teams.
DROP FUNCTION "YOUR_SCHEMA_NAME"."YOUR_FUNCTION_NAME";4
After dropping the function, retry the deployment or creation process that resulted in the error.
2. Review and Correct Source Code for Duplication medium
Examine the code responsible for creating the SQLScript function to identify and eliminate any redundant definitions.
1
Identify the development artifact (e.g., ABAP program, SAP HANA CDS view, SAP HANA procedure) that is attempting to create the SQLScript function.
2
Open the source code of this artifact in your development environment (e.g., SAP Business Application Studio, Eclipse with ADT).
3
Carefully review the code for any duplicate `CREATE FUNCTION` statements or any logic that might inadvertently lead to the function being created multiple times during a single execution or deployment.
Example of potential duplication (illustrative, actual code will vary):
-- Incorrect: Function created twice
CREATE FUNCTION "MY_SCHEMA"."MY_FUNC" (...) RETURNS ... AS BEGIN ... END;
-- ... other code ...
CREATE FUNCTION "MY_SCHEMA"."MY_FUNC" (...) RETURNS ... AS BEGIN ... END;
-- Corrected: Only one creation statement
CREATE FUNCTION "MY_SCHEMA"."MY_FUNC" (...) RETURNS ... AS BEGIN ... END;4
Modify the source code to ensure the function is defined only once. This might involve removing redundant `CREATE FUNCTION` statements or implementing conditional logic to prevent multiple creations.
5
Redeploy or execute the corrected development artifact.
3. Utilize `CREATE OR REPLACE FUNCTION` for Idempotent Deployments easy
Modify function creation statements to allow for re-execution without error.
1
Locate the SQLScript code responsible for creating the function.
2
Change the `CREATE FUNCTION` statement to `CREATE OR REPLACE FUNCTION`. This statement will create the function if it doesn't exist, or replace it if it already does, effectively making the deployment idempotent.
Original:
CREATE FUNCTION "YOUR_SCHEMA_NAME"."YOUR_FUNCTION_NAME" (...) RETURNS ... AS BEGIN ... END;
Modified:
CREATE OR REPLACE FUNCTION "YOUR_SCHEMA_NAME"."YOUR_FUNCTION_NAME" (...) RETURNS ... AS BEGIN ... END;3
Deploy or execute the code with the `CREATE OR REPLACE FUNCTION` statement.