(clientid STRING,topic STRING,payload STRING,publish_received_at TIMESTAMP_LTZ);CREATESTAGEIFNOTEXISTStestdatabase.public.emqxFILE_FORMAT=(TYPE=CSV PARSE_HEADER=TRUE FIELD_OPTIONALLY_ENCLOSED_BY='"')COPY_OPTIONS
NOORDER specifies that the values are not guaranteed to be in increasing order. For example, if a sequence has START 1 INCREMENT 2, the generated values might be 1, 3, 101, 5, 103, etc. NOORDER can improve performance when multiple INSERT operations are performed concurrently (for example, ...
这样就可以提高存储过程的性能。存储过程的概念存储过程Procedure是一组为了完成特定功能的SQL语句集合,经编译后存储在数据库中,用户通过指定存储过程的名称并给出参数来执行。...存储过程中可以包含逻辑控制语句和数据操纵语句,它可以接受参数、输出参数、返回单个或
CREATE [ OR REPLACE ] PIPE [ IF NOT EXISTS ] <name> [ AUTO_INGEST = [ TRUE | FALSE ] ] [ ERROR_INTEGRATION = <integration_name> ] [ AWS_SNS_TOPIC = '<string>' ] [ INTEGRATION = '<string>' ] [ COMMENT = '<string_literal>' ] AS <copy_statement> Required parameters name Ide...
INSERT INTO `leafsegment` VALUES ('test', 0, 5000, '测试', '2018-12-06 23:32:11'); 数据库表如下图 biz_tag:业务标记,不同业务使用不同的值,可以最大限度地利用ID max_id:当前已经被申请走的最大Id step:每次申请Id的步长 desc:业务内容描述 ...
这里使用触发程序实现此功能. 触发程序语法如下: Create trigger <tri_name> {before|after} {insert|update|delete} On <tab_name> For each row <触发程序SQL语句> 核心代码: use t14test show tables drop table if exists uuidTest create table uuidTest( testId VARCHAR() not NULL ...
Next, insert new rows from the intermediate or landing table that are not in the final table. UPDATE aurora_target_table t SET t.value = s.value FROM landing_delta_table in WHERE t.id = in.id; INSERT INTO auroa_target_table (id, value) SELECT id, value FROM landing_delta_table ...
INSERT INTO DBMGT.DBADMIN.XXX_BKP_DBLOGS (LOG_MESSAGE, action, status) VALUES (''created backup '' || :v_clone_db_name, ''Backup'',''Success''); RETURN ''Backup successful''; exception when other then LET LINE := SQLCODE || '': '' || SQLERRM; INSERT INTO DBMGT.DBADMIN.XXX...
INSERT INTO final_target_table (id, value) SELECT id, value FROM intermed_delta_table WHERE NOT id IN (SELECT id FROM final_target_table); Delete all records from the final table that are in the intermediate table. Then insert all rows from the intermediate table to the final table. DE...
3. If we insert a fact without a matching dimension record, the new fact does not appear in the view because there is no matching dimension. The stream on the view will also reflect this. 4. When we insert the matching dimension record, it does appear in the view and the stream on ...