March 2021
Beginner to intermediate
456 pages
12h 49m
Korean
Content preview from 러닝 SQL: 데이터 생성, 검색, 조작까지 데이터 제대로 주무르기
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대용량 데이터베이스 작업
확실히 처리되었는지 확인하고자 메타데이터를 살펴보겠습니다.
mysql> SELECT partition_name, partition_expression,
-> partition_description
-> FROM information_schema.partitions
-> WHERE table_name = 'sales'
-> ORDER BY partition_ordinal_position;
+----------------+----------------------+---------------------------------+
| PARTITION_NAME | PARTITION_EXPRESSION | PARTITION_DESCRIPTION |
+----------------+----------------------+---------------------------------+
| NORTHAMERICA | 'geo_region_cd' | 'US_NE','US_SE','US_MW','US_NW',|
| | | 'US_SW','CAN','MEX' |
| EUROPE | 'geo_region_cd' | 'EUR_E','EUR_W' |
| ASIA | 'geo_region_cd' | 'CHN','JPN','IND',’KOR’ |
+----------------+----------------------+---------------------------------+ ...