Error
Error Code:
2050
SAP S/4HANA Error 2050: Unsupported DDL for Column Table
Description
This error indicates that a Data Definition Language (DDL) operation was attempted on a column table using a data type, constraint, or feature that is not supported by the underlying SAP HANA column store. It typically occurs during table creation, alteration, or migration when the DDL statement contains incompatible elements for a column-oriented table structure.
Error Message
ERR_CS_NOT_SUPPORTED_DDL: Not supported DDL type for column table
Known Causes
3 known causesUnsupported Data Type Usage
The DDL statement attempts to define a column with a data type (e.g., specific complex or legacy types) that is not compatible with or explicitly supported by the SAP HANA column store.
Invalid Column Table Features
The DDL statement includes features, constraints, or properties (e.g., certain index types, partitioning schemes) that are not permitted or recognized for column-store tables in SAP HANA.
Database Version Limitations
The DDL syntax or specified data types might be valid in other database contexts or different SAP HANA versions, but not in the specific version of SAP HANA backing your SAP S/4HANA system.
Solutions
3 solutions available1. Identify and Remove Unsupported DDL Statements easy
Locate the DDL statement causing the error and remove or modify it to be compatible with column tables.
1
Review the DDL statement that triggered error 2050. This is often found in application logs, trace files, or the direct SQL command being executed.
2
Common unsupported DDL operations for column tables include certain index types (e.g., specific hash index configurations), unsupported data types, or certain table alterations that are not optimized for column-store structures. Consult the SAP HANA SQL Reference for a comprehensive list of supported DDL for column tables.
3
Modify or remove the unsupported DDL statement. For example, if a specific index type is causing the issue, consider removing it or replacing it with a supported alternative. If a data type is the problem, explore compatible data types in SAP HANA for column tables.
4
Re-execute the corrected DDL statement.
2. Utilize SAP HANA Studio/Web IDE for DDL Generation medium
Leverage SAP's development tools to generate DDL statements that are inherently compatible with SAP HANA column tables.
1
Open SAP HANA Studio or SAP Web IDE.
2
Navigate to the relevant database object (e.g., table, schema) you are trying to modify or create.
3
Use the graphical interfaces or wizards provided by the tools to perform the desired DDL operation. These tools are designed to generate SAP HANA-optimized and compatible SQL.
4
For example, when creating a table, use the 'Create Table' wizard. When adding a column, use the 'Alter Table' functionalities. The tools will automatically generate the correct syntax for column tables.
5
Execute the generated DDL statement from within the tool.
3. Verify Table Type and Data Model Design medium
Ensure the table's intended storage type (row or column) aligns with the DDL operation and that the overall data model is optimized for SAP HANA.
1
Determine if the table in question is intended to be a column table or a row table. Error 2050 specifically targets unsupported DDL for column tables.
2
Query the system views to check the table's storage type. For example, to check a table named 'MY_TABLE' in schema 'MY_SCHEMA':
SELECT TABLE_NAME, TABLE_TYPE FROM "SYS"."TABLES" WHERE SCHEMA_NAME = 'MY_SCHEMA' AND TABLE_NAME = 'MY_TABLE';3
If the table is indeed a column table and you are attempting an unsupported DDL, reconsider the operation. Perhaps the DDL is more appropriate for a row table, or the column table design needs adjustment.
4
If the DDL is critical for a column table, consult SAP HANA best practices for column-store optimization. This might involve rethinking the table structure, partitioning strategy, or the types of indexes applied.