ALTER TABLE table_name { ADD PARTITION clause | DROP PARTITION clause | PARTITION SET LOCATION clause | RENAME PARTITION clause | RECOVER PARTITIONS clause } ADD PARTITION 子句向表中添加一个或多个分区。语法复制 ADD [IF NOT EXISTS] { PARTITION clause [ LOCATION path ] } [...]...
ALTERTABLEtable_name{ADDPARTITIONclause|DROPPARTITIONclause|PARTITIONSETLOCATIONclause|RENAMEPARTITIONclause|RECOVERPARTITIONSclause} ADDPARTITIONclause Adds one or more partitions to the table. Managing partitions is not supported for Delta Lake tables. ...
[SPARK-33676] [SQL] 需要 V2 中的分割規範與架構完全比對 ALTER TABLE .. ADD/DROP PARTITION [SPARK-33670] [SQL] 確認在 v1 中的分割區提供者是 Hive SHOW TABLE EXTENDED [SPARK-33663] [SQL] 不應該對不存在的暫存視圖呼叫解除快取 [SPARK-33667] [SQL] 在解析 v1 SHOW PARTITIONS 時遵循 spark....
(dateDATE,idINT,eventSTRING)USINGCSV PARTITIONEDBY(date); >ALTERTABLElogADDPARTITION(date=DATE'2021-09-10'); >ALTERTABLElogDROPPARTITION(date=DATE'2021-09-10');-- Drop all partitions from the named university, independent of the major.>ALTERTABLEstudentDROPPARTITION(university ='TU ...
partition > CREATE TABLE log(date DATE, id INT, event STRING) USING CSV PARTITIONED BY (date); > ALTER TABLE log ADD PARTITION(date = DATE'2021-09-10'); > ALTER TABLE log DROP PARTITION(date = DATE'2021-09-10'); -- Drop all partitions from the named university, independent of ...
(age=10); -- After truncate execution, records belonging to partition age=10 are removed > SELECT * FROM Student; name rollno age --- --- --- XYZ 3 12 -- Remove all rows from the table from all partitions > TRUNCATE TABLE Student; > SELECT * FROM Student; name rollno age ---...
partition > CREATE TABLE log(date DATE, id INT, event STRING) USING CSV PARTITIONED BY (date); > ALTER TABLE log ADD PARTITION(date = DATE'2021-09-10'); > ALTER TABLE log DROP PARTITION(date = DATE'2021-09-10'); -- Drop all partitions from the named university, independent of ...
A junior engineer has written the following code to add CHECK constraints to the Delta Lake table: ALTER TABLE activity_details ADD CONSTRAINT valid_coordinates CHECK ( latitude >= -90 AND latitude <= 90 AND longitude >= -180 AND longitude <= 180) A senior engineer has confirmed the above...
CREATE SHARE my_share; ALTER SHARE my_share ADD TABLE partnership PARTITION (partner_name = CURRENT_RECIPIENT().name); In this example, the recipients with access to the share will only be able to access the table partitions whose column matches its name. In the future if you are going to...
ALTER TABLE (drop partition) error in Unity Catalog external tables For CSV, JSON, ORC, or data formats, use partition metadata logging. ... Last updated: October 15th, 2024 by lakshay.goel Schema mismatch issue while reading parquet files Fix the file schema or read the files separately....