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HomeDatabaseMysql TutorialHow to Fix MySQL's 'SELECT List Incompatible with GROUP BY' Error?

How to Fix MySQL's

Resolving "SELECT List Incompatible with GROUP BY" Error with SQL_MODE

MySQL's error message:

Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'returntr_prod.tbl_customer_pod_uploads.id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

indicates that the SELECT list contains non-aggregated columns that are not in the GROUP BY clause. This error occurs when using MySQL's only_full_group_by SQL mode.

Potential Solutions:

  • Change SQL Mode:

You can temporarily disable the only_full_group_by mode by executing the following command:

SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));
  • Modify Query:

Alternatively, you can modify your query to include all columns from the SELECT list in the GROUP BY clause:

SELECT *
FROM `tbl_customer_pod_uploads`
WHERE `load_id` = '78' AND
      `status` = 'Active'
GROUP BY `load_id`, `bill_id`, `latitude`, `langitude`, `proof_type`, `document_type`, `file_name`, `is_private`, `status`, `createdon`, `updatedon`
  • Use Aggregator Functions:

For best practices in Structured Query Language, avoid selecting all columns. Instead, use aggregator functions on the grouping columns, such as:

SELECT MAX(`id`) AS `id`,
       COUNT(*) AS `total_rows`
FROM `tbl_customer_pod_uploads`
WHERE `load_id` = '78' AND
      `status` = 'Active'
GROUP BY `load_id`

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