Manual:RunBatchedQuery.php
| MediaWiki file: runBatchedQuery.php | |
|---|---|
| Location: | maintenance/ |
| Source code: | master • 1.42.3 • 1.41.4 • 1.39.10 |
| Classes: | BatchedQueryRunner |
Details
runBatchedQuery.php file is a maintenance script to run a database query in batches and wait for replica DBs. This is used on large wikis to prevent excessive replication lag when executing large write queries.
Options
| Option | Description | Required | Default value |
|---|---|---|---|
| --table | Table name | Required | |
| --set | SET clause | Required | |
| --key | Column name, the values of which are unique | Required | |
| --where | WHERE clause | Optional | |
| --batch-size | Batch size | Optional | 1000 |
| --db | Database name, or omit to use the current wiki. | Optional | current wiki db |
Usage
php maintenance/runBatchedQuery.php --table tableName --key columnName --set newValue [ --where| --batch-size| --db ]