ALTER FUNCTION ALTER GROUP ALTER IDENTITY PROVIDER ALTER MASKING POLICY ALTER MATERIALIZED VIEW DISTSTYLE and SORTKEY examples ALTER RLS POLICY ALTER ROLE ALTER PROCEDURE ALTER SCHEMA ALTER SYSTEM ALTER TABLE ALTER TABLE examples ALTER EXTERNAL TABLE examples ALTER TABLE ADD and DROP COLUMN examples ALTE...
altertableevent renamecolumneventnametotitle; select * from event_vw limit 1;eventid | venueid | catid | dateid | title | starttime ---+---+---+---+---+--- 2 | 306 | 8 | 2114 | Boris Godunov | 2008-10-15 20:00:00 您只能在后期绑定视图中引用 Amazon Redshift Spectrum ...
ALTER [ COLUMN ] column_name [ SET DATA ] TYPE data_type [ COLLATE collation ] [ USING expression ] eg: postgres=# create table t1(c1 int,c2 varchar(60)); postgres=# insert into t1 values(1,'aaa'),(2,'bbb'); postgres=# alter table t1 alter c2 type varchar(90); postgres=# \...
ALTER [ COLUMN ] column_name [ SET DATA ] TYPE data_type [ COLLATE collation ] [ USING expression ] eg: postgres=# create table t1(c1 int,c2 varchar(60)); postgres=# insert into t1 values(1,'aaa'),(2,'bbb'); postgres=# alter table t1 alter c2 type varchar(90); postgres=# \...
https://docs.aws.amazon.com/zh_cn/redshift/latest/dg/c_best-practices-smallest-column-size.html 测试环境准备 首先,运行如下SQL脚本在你的Redshift数据库中新建一张数据表test_schema.customer用于测试。 CREATE SCHEMA test_schema; CREATE TABLE test_schema.customer ...
insertintosnowplow.event_copy (select*fromsnowplow.event);droptablesnowplow.event;altertablesnowplow.event_copyrenametoevent;committransaction; Verify that the sort and dist keys are in place: SETsearch_pathto'snowplow';SELECT"column",type,encoding, distkey, sortkeyFROMpg_table_defWHEREtablename ='...
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Parse simple SQL statements into an abstract syntax tree (AST) with the visited tableList and convert it back to SQL - node-sql-parser/pegjs/redshift.pegjs at master · openobserve/node-sql-parser
Move data from the existing table to the new table. Synchronize table changes introduced by active workloads during Step 2. Atomically switch over from the old to the new table, typically by using the RENAME statement. When developing...
(avarchar);INSERTINTOt_originalVALUES('v1'), ('v2');/* Here are the steps to add IDENTITY column */CREATETABLEt_new (idBIGINTIDENTITY(0,1), avarchar);ALTERTABLEt_new APPENDFROMt_original FILLTARGET;DROPTABLEt_original;ALTERTABLEt_newRENAMETOt_original;/* Show the result */SELECT*FROMt...