PostgresDB 2202H: Invalid Tablesample Argument

Invalid argument provided to TABLESAMPLE.
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PostgresDB 2202H: Invalid Tablesample Argument

 ?

When encountering the error 2202H: Invalid Tablesample Argument in PostgreSQL, the user should immediately check the TABLESAMPLE clause used in the query for syntax errors or incorrect arguments. Specifically, ensure that:

  1. The sampling method (e.g., BERNOULLI, SYSTEM) is correctly spelled.
  2. The percentage argument is between 0 and 100 (inclusive) for the BERNOULLI method, or a valid row count for the SYSTEM method if applicable.
  3. The optional REPEATABLE seed is a positive integer if used.

To investigate, run the following steps:

  1. Review the Query: Identify and correct any syntax errors or incorrect arguments in the TABLESAMPLE clause.

Example Query Correction:

SELECT * FROM your_table TABLESAMPLE BERNOULLI(10); -- Ensure percentage is between 0 to 100

  1. Test the TABLESAMPLE Clause Independently (if part of a larger query):Run a simple SELECT using the TABLESAMPLE clause on the table to isolate the issue.

Example Testing Query:

SELECT * FROM your_table TABLESAMPLE BERNOULLI(5); -- Adjust the percentage to test

  1. Check Documentation: Quickly refer to the PostgreSQL documentation on TABLESAMPLE to ensure the arguments and syntax align with the PostgreSQL version you're using.

If the error persists after these checks, consider simplifying the query or using an alternative method to achieve the desired sample of the data.

Attached error: 
PostgresDB 2202H: Invalid Tablesample Argument
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