CREATE TEMPORARY TABLE temp_table ( id INT, name VARCHAR(50) ); -- 插入数据 INSERT INTO temp_table (id, name) SELECT id, name FROM source_table WHERE condition; -- 更新临时表 UPDATE temp_table SET name = 'New Name' WHERE id = 1; -- 使用CTE更新目标表 WITH cte AS ( SELECT t...
distkey (column_a) -- Assuming you intend to join this table on column_a sortkey (column_b) -- Assuming you are sorting or grouping by column_b ; INSERT INTO my_temp_table SELECT column_a, column_b FROM my_table; COMMIT; 如果您使用CREATE TABLE LIKE语句创建一个临时分段表,则该分段表...
CREATE TABLE AS (CTAS) CREATE TEMP TABLE AS SELECT INTO 当您对最初加载其数据后未分析的新表运行查询时,Amazon Redshift 将返回一条警告消息。在后续更新或加载后查询表时,不会出现警告。在您对引用未经分析的表的查询运行 EXPLAIN 命令时,将返回相同的警告消息。 在通过将数据添加到非空表来明显更改表...
EXECUTE 'create table ' || table_full_name_new || ' (like ' || table_full_name || ')'; -- Get the temp table for all columns for a table, temp_table_column_scripts drop table if exists temp_table_column_scripts; create temp table temp_table_column_scripts(script varchar); insert...
CREATE [ [LOCAL ] { TEMPORARY | TEMP } ] TABLE [ IF NOT EXISTS ] table_name ( { column_name data_type [column_attributes] [ column_constraints ] | table_constraints | LIKE parent_table [ { INCLUDING | EXCLUDING } DEFAULTS ] } [, ... ] ) [ BACKUP { YES | NO } ] [table_at...
CREATE TEMP TABLE staging (LIKE ods.store_sales); -- replace the following COPY from S3: /*COPY staging FROM 's3://yourETLbucket/daily_store_sales/' IAM_ROLE 'arn:aws:iam::<account_id>:role/<s3_reader_role>' DELIMITER '|' COMPUPDATE OFF; */ ...
以下是来自netezza的查询: 查询#1 CREATE TEMP TABLE TMPRY_DELTA_UPD_1000 AS SELECT nvl(PT.HOST_CRRNCY_SRRGT 浏览17提问于2019-02-18得票数 0 2回答 Amazon Redshift -复制-数据加载与查询性能问题 、 我们正在将数据仓库从Oracle迁移到Redshift。目前,我们有两个Oracle数据库实例-一个DW实例(主)获取...
CREATE [ [LOCAL ] { TEMPORARY | TEMP } ] TABLE [ IF NOT EXISTS ] table_name ( { column_name data_type [column_attributes] [ column_constraints ] | table_constraints | LIKE parent_table [ { INCLUDING | EXCLUDING } DEFAULTS ] } ...
usestagingtable(已弃用)否 description否 preactions否 postactions否 extracopyoptions否 tempformat否 csvnullstring否 csvseparator否,在将 tempformat 设置为CSV或 CSV GZIP。 它必须是有效的 ASCII 字符,例如“,”或“|”。 csvignoreleadingwhitespace否 ...
CREATE TEMP TABLE lineitem_dk_l_partkey DISTKEY (l_partkey) AS SELECT l_partkey FROM lineitem; -- Identify the table OID root@redshift/tpch=# SELECT 'lineitem_dk_l_partkey'::regclass::oid; oid ---240791(1 row) Code Now that...