– 每个子查询可以是SELECT,VALUES,INSERT,UPDATE或DELETE语句。 IGNORE 用于主键或者唯一约束冲突时忽略冲突的数据。 详细介绍参见UPSERT。 OVERWRITE 用于标识覆盖式插入方式,使用此种插入方式执行结束后,目标原数据被清空,只存在新插入的数据。 OVERWRITE支持指定列插入的功能,其他列为默认值,若无默认值则为NULL。
>trx_undof_page_add_undo_rec_log 记录undo的redo log 入redo buffer >page_cur_tuple_insert 进行insert 元组插入,及实际的插入操作 >page_cur_insert_rec_write_log 记录插入的redo log 入redo buffer >binlog_log_row >write_locked_table_maps >THD::binlog_write_table_map >binlog_start_trans_and...
delete first tupple with trigger on insert 3587 Andreas Staudinger August 26, 2011 02:16AM Re: delete first tuple with trigger on insert 1281 Peter Brawley September 02, 2011 10:02AM Sorry, you can't reply to this topic. It has been closed. ...
Vertica follows the SQL-92 transaction model, so successive INSERT, UPDATE, and DELETE statements are included in the same transaction. You do not need to explicitly start this transaction; however, you must explicitly end it withCOMMIT, or implicitly end it withCOPY. Otherwise, Vertica discards...
与前述部分相同,创建dual_record表,记录insert into…select写入一百万数据期间,vtrx视图ins_cnt,upd_cnt,del_cnt三列内容,表结构如下 CREATE TABLE "SYSDBA"."DUAL_RECORD" ( "INS_CNT" INT, "UPD_CNT" INT, "DEL_CNT" INT, "CREATE_TIME" TIMESTAMP(6)) 语句执行过程中,使用以下语句记录vtrx视图信息...
create database if not exists mytest; use mytest; create table stu(id int,name string); hive -f /export/servers/hive.sql 3.Hive 基础 3.1.hive 支持的基本类型 3.2.基本SQL语句 insert、delete、update、select 多表查询与代数运算 内连接 ...
2create tablet(idintNOT NULL AUTO_INCREMENT , PRIMARY KEY (id)); 3insert intot(id)values(1),(10),(20),(50); 然后我们开两个客户端会话,一个会话执行insert into t(id) value(30),另一个会话执行select * from t where id = 30 lock in shar...
* useful special cases that we can safely allow, such as CREATE TABLE AS. *///暂不支持并行操作if(IsParallelWorker())ereport(ERROR, (errcode(ERRCODE_INVALID_TRANSACTION_STATE),errmsg("cannot insert tuples in a parallel worker")));//设置Oidif(relation->rd_rel->relhasoids) ...
create table emp_temp as select * from emp where 1 = 2 --delete关键字 --作用:删除表中的数据 --语法:delete [from] tablename [where condition] --例子: delete emp_temp where empno = 8888; delete emp_temp; --跑路 select * from emp_temp ...
"DELETE FROM `t_user` WHERE ID=? AND NAME=? AND AGE=?", Arrays.asList("1", "zhangsan", 23)); // 创建测试 insert sql 的 HmilySQLTuple 对象 HmilySQLTuple hmilySQLTuple = new HmilySQLTuple(); hmilySQLTuple.setTableName("t_user"); Map<String, Object> afterImage = new HashMap<>...