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Databricks ( Spark ) にて前方一致したデータベース(スキーマ)を削除する方法

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概要

Databricks ( Spark ) にて前方一致したデータベース(スキーマ)を削除する方法を共有します。

実践例

1. 削除対象のデータベースを作成

%sql
create database _test_1;
create database _test_2;
create database _test_3;
create database _test_4;

image.png

1. 前方一致したデータベース(例:_testではじまるデータベース)を DROP

db_prefix = '_test'
 
dbs = spark.sql(f"SHOW DATABASES '{db_prefix}*'").select('databaseName').collect()
for db_index in range(len(dbs)):
    db_name = dbs[db_index][0]
    spark.sql(f'DROP DATABASE {db_name} CASCADE')
    print(f'{db_name} is dropped.')

image.png

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