WebAug 16, 2024 · ALTER TABLE db.yourtable DROP IF EXISTS PARTITION (loaded_date="2024-08-22"); you need to set the tblproperties for your hive external table as False, if you want to delete the data as well. It will set your hive table as managed table. alter table db.yourtable set TBLPROPERTIES ('EXTERNAL'='FALSE'); you can set it … WebUsing Drop Partition Request Overview Partitions are an RDBMS concept to subdivide a table or index. When a table is partitioned, any index on that table is also partitioned. Partitions are used in VCP to segregate data. This improves overall performance because the data can be manipulated separately by partition.
大数据阿里ACP认证考试练习题及答案四.docx-原创力文档
WebFeb 18, 2024 · Also important to note that alter table drop partition will not delete any data, just the partition meta-data object. Deleting the files is an independent operation and could be done in any order if required. – Davos Aug 12, 2024 at 3:35 1 @Davos, I think this is true for external tables. – Piotr Findeisen Aug 16, 2024 at 19:54 Web大数据阿里ACP认证考试练习题及答案三.docx,试题说明 本套试题共包括1套试卷 每题均显示答案和解析 大数据阿里ACP认证考试练习题及答案3(400题) [单选题]0DPS项目空间prjl中存在表tl, owner打开LabelSecurity设置后,执行如下命令:SET LABEL 1 TO TABLE tl; SET LABEL 2 TO TABLE tl(id); SET LABEL 3 TO TABLE tl;此时,tl ... top musically
Restrict DROP and ALTER table under specific schema in Oracle
WebDROP PARTITION removes dependencies in the catalog files and removes storage containers in the background without affecting Vertica transactions. Vertica executes a Moveout operation before executing DROP PARTITION. Create staging tables with the same table definition as the original table. WebJan 14, 2014 · If new partition data's were added to HDFS (without alter table add partition command execution) . then we can sync up the metadata by executing the command 'msck repair'. What to be done if a lot of partitioned data were deleted from HDFS (without the execution of alter table drop partition commad execution). WebALTER TABLE orders DROP PARTITION (dt = '2014-05-14', country = 'IN'), PARTITION (dt = '2014-05-15', country = 'IN'); Notes. The ALTER TABLE DROP PARTITION statement … pine grove area school district cvc