DELETE OPENQUERY (VERYEAST_MAIN_MYSQL_CONN, 'SELECT college_userid FROM college_student_information ') WHERE college_userid IN(SELECT college_userid FROM #college_student_info) 链接服务器"VERYEAST_MAIN_MYSQL_CONN"的 OLE DB 访问接口 "MSDASQL" 返回了
查询表信息(表名/表描述): SELECT table_name name,TABLE_COMMENT value FROM INFORMATION_SCHEMA.TABLES WHERE table_type='base table' and table_schema = '数据库名' order by table_name asc 查询列信息(列ID/列名/数据类型/长度/精度/是否可以为null/默认值/是否自增/是否是主键/列描述): 方式一: SHOW FULL COLUMNS FRO
查询表信息(表名/表描述) Value ) AS value FROM sysobjects a Where a.xtype = 'U' AND a.name <> 'sysdiagrams' AND a.name <> 'dtproperties' ORDER BY a.name asc 查询列信息(列ID/列名/数据类型/长度/精度/是否可以为null/默认值/是否自增/是否是主键/列描述) ) ) THEN NULL ELSE COLUMNPROPERTY(a.id,a.na
查询表信息(表名/表描述) Select table_Name As Name,Comments As Value From User_Tab_Comments Where table_Type='TABLE' Order By table_Name Asc 查询列信息(列ID/列名/数据类型/长度/精度/是否可以为null/默认值/是否自增/是否是主键/列描述) select a.COLUMN_ID As Colorder,a.COLUMN_NAME As ColumnName,a.DATA_
查询表信息(表名/表描述) select a.relname as name , b.description as value from pg_class a ) b on a.oid = b.objoid where a.relname in (select tablename from pg_tables where schemaname = 'public') order by a.relname asc 查询列信息(列ID/列名/数据类型/长度/精度/是否可以为null/默认值/是否自增
在使用Transactional Replication时,Subscriber 被认为是“Read-Only”的 , All data at the Subscriber is “read-only” (transactional replication does not enforce this at the Subscriber),不能更新Subscriber数据的主键,否则,某些数据更新操作会失败. 一,在Transactional Replication中,How Changes Ar
veridata实验例(5)更改主键列值,update操作将被分成两个语句 续接"veridata实验举例(4)验证veridata查找出updata.delete操作导致的不同步现象".地址:点击打开链接 环境: Item Source System Target System Platform Red Hat Enterprise Linux Server release 5.4 Red Hat Enterprise Linux Server release 5.4 Hostnam
<pre name="code" class="html"> create table t1 (id char(10) primary key,a1 char(10),a2 char(10)); begin for i in 1 .. 1000 loop insert into t1 values(i,i,'a'||i); end loop ; commit; end; BEGIN DBMS_STATS.GATHER_TABLE_STATS(ownnam
查看所有数据库中所有表的数据库名和表名 SELECT `TABLES`.`TABLE_SCHEMA`, `TABLES`.`TABLE_NAME` FROM `information_schema`.`TABLES` 查看所有数据库中所有基本表的数据库名和表名 SELECT `TABLES`.`TABLE_SCHEMA`, `TABLES`.`TABLE_NAME` FROM `information_schema`.`TABLES` WHERE `TABLES`.`TABLE_TYPE` =