How To Fix DT547 - Index &-& is of type Full Text; table must be in Column Store

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 547

• Message text: Index &-& is of type Full Text; table must be in Column Store

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DT547 - Index &-& is of type Full Text; table must be in Column Store ?

  The SAP error message DT547 indicates that there is an issue with the data structure of a table that is being used in a query or operation. Specifically, it states that the index you are trying to use is of type "Full Text," but the table must be in "Column Store" format. This typically occurs in the context of SAP HANA, which supports both row and column store tables.
  Cause:
  
  Table Type Mismatch: The error arises when a full-text index is created on a table that is not in column store format. Full-text indexes are only supported on column store tables in SAP HANA.
  Incorrect Table Definition: The table may have been defined as a row store table, which does not support full-text indexing.
  Query or Operation: The query or operation you are trying to perform is attempting to access a full-text index on a table that is not compatible.
  
  Solution:
  
  
  Check Table Definition: Verify the definition of the table in question. You can do this by checking the table properties in the SAP HANA Studio or using SQL commands to inspect the table structure.
  SELECT * FROM M_TABLES WHERE TABLE_NAME = 'your_table_name';
  
  
  Convert Table to Column Store: If the table is indeed a row store and you need to use full-text indexing, you will need to convert the table to a column store. This can be done using the following SQL command:
  ALTER TABLE your_table_name SET (TABLE_TYPE = 'COLUMN');
  Note: Converting a table from row store to column store may require data migration and could have implications on performance and storage.
  
  
  Recreate the Index: After ensuring that the table is in column store format, you may need to recreate the full-text index.
  CREATE FULLTEXT INDEX your_index_name ON your_table_name (your_column_name);
  
  
  Review Documentation: Consult the SAP HANA documentation for more details on full-text indexing and table types to ensure compliance with best practices.
  
  
  Related Information:
  
  SAP HANA Documentation: Review the official SAP HANA documentation for detailed information on table types, indexing, and performance considerations.
  Performance Considerations: Understand the implications of using column store versus row store, especially in terms of performance for different types of queries.
  SAP Community: Engage with the SAP Community forums for insights and experiences from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the DT547 error and successfully utilize full-text indexing in your SAP HANA environment.