124 lines
2.8 KiB
MySQL
124 lines
2.8 KiB
MySQL
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-- Rename Table
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ALTER TABLE tbl1 RENAME TO tbl2;
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-- Alter Table Properties
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ALTER TABLE mydb.tb22 SET TBLPROPERTIES ('creator'='hayden');
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-- Alter Table Comment
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ALTER TABLE mydb.tb22 SET TBLPROPERTIES ('comment' = 'This is a new comment!');
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-- Add SerDe Properties
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ALTER TABLE employee_tb SET SERDE 'com.dt.test';
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ALTER TABLE employee_tb
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SET SERDE 'com.dt.test'
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WITH SERDEPROPERTIES ('field.delim' = ',');
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ALTER TABLE sale_rbl
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PARTITION (
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`pt1`='1'
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)
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SET SERDEPROPERTIES ('field.delim' = ',');
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-- Remove SerDe Properties
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ALTER TABLE sale_rbl UNSET SERDEPROPERTIES ('field.delim');
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-- Alter Table Storage Properties
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ALTER TABLE students
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CLUSTERED BY (id, `name`, age)
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SORTED BY (age)
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INTO 2 BUCKETS;
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-- Alter Table Skewed or Stored as Directories
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ALTER TABLE dt_shop
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SKEWED BY (id, cost)
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ON (('id',1), ('cost', 1000));
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ALTER TABLE dt_shop
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SKEWED BY (id, cost)
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ON (('id',1), ('cost', 1000))
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STORED AS DIRECTORIES;
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-- Alter Table Not Skewed
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ALTER TABLE dt_shop NOT SKEWED;
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-- Alter Table Not Stored as Directories
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ALTER TABLE dt_shop NOT STORED AS DIRECTORIES;
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-- Alter Table Set Skewed Location
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ALTER TABLE dt_shop SET SKEWED LOCATION ('id'='location1', "cost"="loaction2" );
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-- Alter Table Constraints
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ALTER TABLE tbl1
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ADD CONSTRAINT const1
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PRIMARY KEY (id)
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DISABLE NOVALIDATE;
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ALTER TABLE tbl2
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ADD CONSTRAINT const2
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FOREIGN KEY (id, `name`)
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REFERENCES refer_tb(rid, rname)
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DISABLE NOVALIDATE RELY;
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ALTER TABLE tbl3
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ADD CONSTRAINT const3
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UNIQUE (`name`, `age`)
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DISABLE NOVALIDATE;
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ALTER TABLE tbl4
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CHANGE COLUMN `col1` `col2` STRING CONSTRAINT const4
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NOT NULL ENABLE;
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ALTER TABLE tbl5
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CHANGE COLUMN `col3` `col4` INT CONSTRAINT const5
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DEFAULT 998 ENABLE;
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ALTER TABLE tbl6
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CHANGE COLUMN col5 col6 MAP<STRING, STRING> CONSTRAINT const6
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CHECK (1) ENABLE;
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ALTER TABLE tbl7 DROP CONSTRAINT remove_const;
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-- Alter Partition
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ALTER TABLE add_par_tbl
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ADD IF NOT EXISTS
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PARTITION (`pt1` = 1) LOCATION '/pat/loc'
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PARTITION (`pt2` = 2, `pt3`=3) LOCATION '/pat/loc'
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-- Rename Partition
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ALTER TABLE ren_par_tbl
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PARTITION (`pt1`=1)
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RENAME TO PARTITION (`pt2`=2) ;
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-- Exchange Partition
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ALTER TABLE ex_part_tbl2
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EXCHANGE PARTITION (`pt1`=1)
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WITH TABLE ex_part_tbl1;
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-- Recover Partitions
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MSCK TABLE rec_tbl;
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MSCK REPAIR TABLE rec_tbl SYNC PARTITIONS;
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-- Drop Partitions
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ALTER TABLE dr_tbl1 DROP PARTITION (`pt1`=1);
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ALTER TABLE dr_tbl2 DROP IF EXISTS PARTITION (`pt2`=2) PURGE;
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-- ALTER TABLE dr_tbl2 DROP IF EXISTS PARTITION (`pt2`=2) IGNORE PROTECTION PURGE;
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-- Archive Partition
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ALTER TABLE arch_pt_tbl1 ARCHIVE PARTITION (`pt1`=1);
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ALTER TABLE arch_pt_tbl2 UNARCHIVE PARTITION (`pt2`=2) ;
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-- Add/Replace Columns
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ALTER TABLE rp_col_tbl1 ADD COLUMNS (`col1` INT);
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ALTER TABLE rp_col_tbl2 REPLACE COLUMNS (`col2` INT);
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ALTER TABLE rp_col_tbl2
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PARTITION (`pt1`=1)
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ADD COLUMNS (`col3` INT COMMENT 'a new col')
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CASCADE;
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