db2 drop table

In Oracle10g, If you accidentally drop a table, Can you restore it? The answer is yes. In Oracle10g, when you run the drop table tablename command, the table will not be deleted, instead, the table is stored in the recycle bin (th

In Oracle 10 Gb, the Flash back family is divided into the following members:Flashback DatabaseFlashback DropFlashback TableFlashback Query (Flashback Query, Flashback Version Query, and Flashback Transaction Query)The following describes Flashback Drop and Flashback Table.Flashback DROPFlashback Drop occurs from Oracle 10 GB and is used to restore objects accidentally deleted by users (including tables and

Operation:1. Export data from DB2 to TXT2. Change the delimiter in the file to ":"3. Create a new table in hive (you need to set a delimiter when building a table)4. Import data--------1. Export data from DB2 to TXTDb2-x "Select Col1,col2,col3 from tbl_name where xxx with ur" >filename.txt2. Change the delimiter in the

Label:First, DROP tableExecute DROP TABLE XX statementThe drop table is placed in the Recycle Bin (user_recyclebin) instead of being deleted directly. In this way, the table information in the Recycle Bin can be restored or comple

Oracle tips: drop table and purge, droppurge When operating on Oracle, we often delete a table. When a deletion error occurs, we want to restore the table and sometimes release the table space immediately after the table is delete

I. Dynamic execution of SQLPREPARE from ' Delete from Test ' ; EXECUTE S1;Second, using cursorsDECLARE CURSOR for SELECT from FJDC. V_i_dg_dm_zy_wl_zbhz_attr T; OPEN V_cursor; FETCH into V_deletesql,v_insertsql; CLOSE V_cursor;Third, while loop while true -do expression ENDwhile;Iv. DB2 query table data, generate dynamic SQL, and execute1 CREATE PROCEDURE" TEST". " TEST "()2 BEGIN3

Tags: io ar art SP on c ad Size EF--Buffer poolCREATE Bufferpool Emp_buf_poolIMMEDIATE All DbpartitionnumsSIZE 250Numblockpages 0PAGESIZE K;--Temporary table spaceCREATE Temporary tablespace emp_tmpIn DATABASE PARTITION GROUP ibmtempgroupPAGESIZE 32KMANAGED by DATABASEUSING (File '/home/db2inst1/db2inst1/node0000/ng2_app8/t0000000/emp_tmp/hefei.dat ' 2G)Extentsize 32Prefetchsize AUTOMATIC Bufferpool Emp_buf_poolOVERHEAD 7.50Transferrate 0.06DROPPED

Tags: idt data-ora varchar2 www. Line alter system COMSource: https://www.cnblogs.com/xd502djj/archive/2010/11/16/1878392.html When you drop a table, deleting the table action causes trigger or constraint to conflict, and the system will receive an error warning message without allowing execution. A very simple example, such as you have an employee base

When you want to drop a table, if the action to delete the table will cause a conflict between trigger and constraint, the system will receive an error warning and will not allow execution .. For example, if you have an employee basic data table, which may contain employee numbers, employee names, and other fields, and

Tags:existseachprim find view New Project default ble build table Mysqldump default Parameters add-drop-table original January 28, 2014 11:35:18 9214 received a colleague on the phone, said UAT the environment of a table was deleted, to restore a bit. The original is the new project UAT, from the test library wit

(1) The DELETE statement performs the deletion by deleting one row from the table at a time and saving the row's delete operation as a transaction record in the log for the rollback operation. TRUNCATE table deletes all the data from the table at once and does not record the individual deletion records in the log, and deleting rows is not recoverable. Delete trig

used for enforcement of unique/primary key Drop tablespace crm_idx including contents cascade Constraints*Error at line 1:ORA-00604: Error occurred at recursiveSQLLevel 1ORA-02429: cannot drop index used for enforcement of unique/primary key ORA-02429 means: let you delete the primary key and unique key under the tablespace Solution:Select 'alter table' | Owner

Tags: from delete SQL statement PAC Database operation table Apple Div convertFirst, syntax in SQL 1, drop TableNBSP; table name eg:drop table dbo. Sys_test 2, truncate tableNBSP; Table name eg:truncate table dbo. sys_t

In the SQL statement ---- delete table data drop, truncate, and delete usage, droptruncate Reprinted from: http://www.cnblogs.com/1312mn/p/4422396.html I. SQL syntax 1. drop table name eg: drop table dbo. Sys_Test2. truncate

Refer to others summary, this content only for oneself studyI. Syntax in SQL1.drop Table name Eg:drop table dbo. Sys_test2.truncate Table name eg:truncate table dbo. Sys_test3.delete from table name where column name = value Eg:de

Sometimes, when we need to delete all the records in the table, in many database systems, we will habitually choose to use truncatetable for implementation. In many DBMS, truncatetable considers DDL statements, it is equivalent to droptable and then createtable. speed efficiency is generally considered much higher than deletefromtable. Although Dropta Sometimes, when we need to delete all the records in the table