# Database

- [Google BigQuery](/db/google-bigquery.md)
- [BigQuery Cancel Running Query](/db/google-bigquery/bigquery-cancel-running-query.md)
- [BigQuery - Split string and get the first part](/db/google-bigquery/bigquery-split-string-and-get-the-first-part.md)
- [BigQuery - UNNEST in SELECT](/db/google-bigquery/bigquery-unnest-in-select.md)
- [Bigquery - Sample queries for audiences based](/db/google-bigquery/bigquery-sample-queries-for-audiences-based.md): These queries return the number of users in the audience. If you'd like to get the list of user IDs in the audience instead, then remove the outermost COUNT() function, e.g., COUNT(DISTINCT user\_id) -
- [BigQuery cookbook for Google Analytics Exported Data](/db/google-bigquery/bigquery-cookbook-for-google-analytics-exported-data.md)
- [Apache Hive](/db/apache-hive.md)
- [Hive - SHOW schemas/tables/create](/db/apache-hive/hive-show-schemas-tables-create.md): These commands will help to show list schemas, list tables and create query of tables.
- [AWS Redshift / Postgres](/db/aws-redshift-postgres.md)
- [Amazon Redshift Utilities](/db/aws-redshift-postgres/amazon-redshift-utilities.md)
- [Postgres - Index Summary](/db/aws-redshift-postgres/postgres-index-summary.md)
- [Postgres - List tables](/db/aws-redshift-postgres/postgres-list-tables.md)
- [Redshift - GRANT](/db/aws-redshift-postgres/redshift-grant.md)
- [Redshift - tables and their owners](/db/aws-redshift-postgres/redshift-tables-and-their-owners.md)
- [Redshift - Check the table size](/db/aws-redshift-postgres/redshift-check-the-table-size.md): Redshift or Postgres is ok
- [Presto](/db/presto.md)
- [Aliyun Data Lake Analytics (Presto) - Add partition on non-existing location](/db/presto/aliyun-data-lake-analytics-presto-add-partition-on-non-existing-location.md)
- [AWS Athena - Add Partition](/db/presto/athena-add-partition.md)