PostgresDB 2202G: Invalid Tablesample Repeat

Invalid repeat value in TABLESAMPLE.
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PostgresDB 2202G: Invalid Tablesample Repeat

 ?

When encountering the error 2202G: Invalid Tablesample Repeat from a PostgreSQL database, the immediate action you should take is:

  1. Inspect the Query: Review the SQL query that resulted in this error, focusing on the TABLESAMPLE clause. This error typically indicates an issue with how the TABLESAMPLE method is used, possibly with the REPEATABLE argument.
  2. Check TABLESAMPLE Syntax: Ensure the syntax of the TABLESAMPLE clause is correct. The syntax should follow the pattern:
  3. SELECT * FROM table_name TABLESAMPLE sampling_method (percentage) REPEATABLE (seed)
  4. Make sure that the sampling_method is valid (e.g., BERNOULLI, SYSTEM), the percentage is properly defined, and the seed in the REPEATABLE argument is a positive integer.
  5. Correct the Seed Value: If the issue is with the REPEATABLE argument, ensure the seed value provided is a positive integer. A negative value or a value that is not an integer can cause this error.
  6. Execute a Test Query Without REPEATABLE: If you're unsure about the REPEATABLE seed value, try running the query without the REPEATABLE argument to check if the error persists. This can help narrow down the issue to the REPEATABLE argument:
  7. SELECT * FROM table_name TABLESAMPLE sampling_method (percentage)
  8. Consult the Documentation: If the error is still not resolved, refer to the PostgreSQL documentation regarding TABLESAMPLE and the REPEATABLE keyword for additional insights.
  9. Check PostgreSQL Logs: Review the PostgreSQL server logs for any additional messages related to this error that might provide more context or detail.

Remember, without a database administrator, proceed with caution and ensure you have the proper backups or permissions before making significant changes to the database or its queries.

Attached error: 
PostgresDB 2202G: Invalid Tablesample Repeat
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