PostgresDB 2201G: Invalid Argument for Width Bucket Function

Invalid argument for the width_bucket function.
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PostgresDB 2201G: Invalid Argument for Width Bucket Function

 ?

When encountering the error "2201G: Invalid Argument for Width Bucket Function" in PostgreSQL, the user should take the following immediate actions to investigate and potentially resolve the issue:

  1. Identify the Query Causing the Error:
    • Review the application logs or PostgreSQL logs to find the exact query that triggered the error. PostgreSQL logs can be checked (if logstatement is enabled) using:SELECT * FROM pgcatalog.pgstatactivity WHERE state = 'active';
  2. Analyze the Query:
    • Look at the width_bucket function usage within the identified query. The width_bucket function has the following form:
    • width_bucket(operand, b1, b2, count)
    • Ensure that operand, b1, b2, and count are provided correctly. b1 should be less than b2, and count must be a positive integer.
  3. Validate Arguments:
    • Run separate queries to check the values of operand, b1, b2, and count to ensure they are within expected ranges. For example:
    • SELECT operand, b1, b2, count FROM your_table WHERE <your_condition>;
    • Verify that b1 < b2 and count is a positive integer.
  4. Test the Function Independently:
    • Create a minimal test query using hard-coded values for operand, b1, b2, and count based on the data types and expected values you’re working with. For example:SELECT width_bucket(10, 1, 100, 10);
  5. Check Data Types:
    • Ensure that the data types of operand, b1, b2, and count are compatible with the width_bucket function. Use the pg_typeof function to check data types, e.g.:SELECT pgtypeof(operand), pgtypeof(b1), pgtypeof(b2), pgtypeof(count) FROM yourtable WHERE <yourcondition>;
  6. Review PostgreSQL Documentation:
    • Consult the PostgreSQL documentation for the width_bucket function to ensure correct usage and understand the constraints.
  7. Adjust the Query:
    • Based on the findings from the steps above, modify the problematic query to correct the usage of the width_bucket function.
  8. Test the Adjusted Query:
    • Run the adjusted query to verify that it executes successfully without triggering the "2201G: Invalid Argument for Width Bucket Function" error.

These steps are directly actionable and should help in identifying and fixing the cause of the "2201G: Invalid Argument for Width Bucket Function" error in PostgreSQL.

Attached error: 
PostgresDB 2201G: Invalid Argument for Width Bucket Function
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