Viewing detailed error messages in BigQuery

Accessing detailed error messages in BigQuery is essential for diagnosing and resolving issues encountered during query execution. This introduction elucidates the importance and methods of viewing detailed error messages in BigQuery, empowering users to troubleshoot effectively and optimize query performance.

BigQuery provides comprehensive error messages that offer insights into the root causes of query failures, syntax errors, and data processing issues. These messages often include specific error codes, contextual information, and suggested resolutions, facilitating efficient troubleshooting and resolution of query-related issues.

Users can access detailed error messages in several ways within the BigQuery interface. When a query encounters an error, BigQuery displays an error message directly in the query editor, highlighting the problematic section of the query and providing relevant details to aid in diagnosis. Additionally, users can review error messages in the query history or job logs, accessing a detailed record of query executions and associated errors.

Prerequisites

GCP account

You may face various error codes and error messages when working with BigQuery, including HTTP error codes, job errors, and Google Cloud Console error messages. You can give your own error messages.

Open Cloud Console

Open Menu > Bigquery

Click 3 dots on project Click Create Dataset

Give Dataset ID.

Click Create Dataset.

3 dots in dataset. Click Open

Click on  the Create table

Select  Source as empty table.

Give Table name.

 create

Click on 3 dots in table. Click Open

Compose new query.

Paste the Query in query editor. Click run

CREATE OR REPLACE TABLE business.customer AS

SELECT

     123 AS cust_id,

'Evan' AS name;

SELECE * FROM business.customer;

Paste the below query in query editor.

DELETE FROM business.customer WHERE true;

Click run.

It will remove 1 row.

Paste the below code in query editor.

SELECT

COUNT(*) AS row_count

FROM business.customer

HAVING

     IF(row_count > 0,true,

ERROR(FORMAT('Error : row_count must be positive but it is %t ',row_count)

)

);

Click run.

It will display error message.

This is all about Viewing detailed error messages in BigQuery