Summary of DB2 Common commands

DB2 Common commands: DB2 get dbm CFG # Displays the current value of the Database Manager configuration parameter Db2ilist #查看系统中存在的实例 DB2 get instance #明确当前运行中的实例 db2cmd db2licm-l #查看版本信息 DB2 DB2 LIS T db directory

To delete a database:

DB2 Force applications All
Drop DB Database

To import a database command set:

DB2 => CREATE Databasedb_nameOn' C: 'Using CodeSet UTF-8 Territory CN
DB2 => Connect todb_nameUserDb2adminUsing123321
DB2 => Commit Work
DB2 => Connect Reset
DB2 => Terminate
CD Y:\backup\
Db2movedb_nameImport-uDb2admin-P123321 DB2 Practical SQL statement: SELECT * FROMAll_tablesFetch i rows only SELECT tabname fromSyscat.columnsWHERE colname like '% field name% ' SELECT colname fromSyscat.columnsWHERE tabname = ' data table name ' SELECTTabname,count (tabname)From Syscat.columnsGROUP byTabName SELECT * from database name. The pattern name. Data table name WHERE field name not in(SELECT field name from database name. Schema name. data table name FETCH 5 of ROWS only) FETCH I ROWS only SELECTDISTINCTColumn name from table name #返回唯一不同的值 SELECT persons.lastname, Persons.firstname, Orders.orderno from PersonsLeft JOINOrders on Persons.id_p=orders.id_p The order of Persons.lastname SELECT table_name fromAll_tablesWHEREnum_rows> 0 #筛选掉空表 SELECT Field 1, SUM (field 2) from table name GROUP by field 1

[1] sum with GROUP by