DB2 Basic Commands - UDB
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This document provides examples of using SQL commands in DB2 to create and manage database tables, insert and query data, create views, and more. It shows how to start and connect to a DB2 database instance named "sample", create tables like "EMPLOYEE" and insert sample records, perform joins, unions and other queries, update and delete records, create a view, list tables, and shut down the DB2 instance. The examples demonstrate basic and some advanced SQL features in DB2.
![db2 => terminate
DB20000I The TERMINATE command completed
successfully.
obelix[33]% db2stop
10/01/2009 14:16:06 0 0 SQL1064N
DB2STOP processing was successful.
SQL1064N DB2STOP processing was successful.](https://image.slidesharecdn.com/db2commands-udb-140601215629-phpapp02/85/DB2-Basic-Commands-UDB-25-320.jpg)
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DB2 Basic Commands - UDB
- 2. to start type db2start To stop db2stop
- 3. db2 => connect to sample db2 => bind sample.bnd Help command: Db2 => ? Db2 => ? CATALOG DATABASE - It gives more info on particular command Quit Commnad: Db2 => quit
- 4. db2 => db2start This takes some time (maybe 30 seconds) DB20000I The DB2START command completed successfully. db2 => ? ACTIVATE DATABASE GET CONTACTGROUPS RECONCILE ADD CONTACT GET CONTACTS RECOVER ADD CONTACTGROUP GET/UPDATE DB CFG REDISTRIBUTE DB PARTITION ADD DATALINKS MANAGER GET/UPDATE DBM CFG REFRESH LDAP ADD DBPARTITIONNUM GET DBM MONITOR SWITCHES REGISTER LDAP ADD XMLSCHEMA GET DESCRIPTION FOR HEALTH REGISTER XMLSCHEMA ARCHIVE LOG GET NOTIFICATION LIST REGISTER XSROBJECT ATTACH GET HEALTH SNAPSHOT REORG INDEXES/TABLE AUTOCONFIGURE GET INSTANCE REORGCHK BACKUP DATABASE GET MONITOR SWITCHES RESET ADMIN CFG BIND GET RECOMMENDATIONS RESET ALERT CFG CATALOG APPC NODE GET ROUTINE RESET DB CFG CATALOG APPN NODE GET SNAPSHOT RESET DBM CFG CATALOG DATABASE HELP RESET MONITOR CATALOG DCS DATABASE HISTORY RESTART DATABASE CATALOG LDAP DATABASE IMPORT RESTORE DATABASE CATALOG LDAP NODE INITIALIZE TAPE REWIND TAPE CATALOG LOCAL NODE INSPECT ROLLFORWARD DATABASE CATALOG NPIPE NODE LIST ACTIVE DATABASES RUNCMD CATALOG NETBIOS NODE LIST APPLICATIONS RUNSTATS CATALOG ODBC DATA SOURCE LIST COMMAND OPTIONS SET CLIENT CATALOG TCPIP NODE LIST DATABASE DIRECTORY SET RUNTIME DEGREE CHANGE DATABASE COMMENT LIST DB PARTITION GROUPS SET TABLESPACE CONTAINERS CHANGE ISOLATION LEVEL LIST DATALINKS MANAGERS SET TAPE POSITION COMPLETE XMLSCHEMA LIST DBPARTITIONNUMS SET UTIL_IMPACT_PRIORITY CREATE DATABASE LIST DCS APPLICATIONS SET WRITE
- 5. CREATE TOOLS CATALOG LIST DCS DIRECTORY START DATABASE MANAGER DEACTIVATE DATABASE LIST DRDA INDOUBT START HADR DECOMPOSE XML DOCUMENT LIST HISTORY STOP DATABASE MANAGER DECOMPOSE XML DOCUMENTS LIST INDOUBT TRANSACTIONS STOP HADR DEREGISTER LIST NODE DIRECTORY TAKEOVER HADR DESCRIBE LIST ODBC DATA SOURCES TERMINATE DETACH LIST PACKAGES/TABLES UNCATALOG DATABASE DROP CONTACT LIST TABLESPACE CONTAINERS UNCATALOG DCS DATABASE DROP CONTACTGROUP LIST TABLESPACES UNCATALOG LDAP DATABASE DROP DATABASE LIST UTILITIES UNCATALOG LDAP NODE DROP DATALINKS MANAGER LOAD UNCATALOG NODE DROP DBPARTITIONNUM LOAD QUERY UNCATALOG ODBC DATA DROP TOOLS CATALOG MIGRATE DATABASE UNQUIESCE DATABASE ECHO PING UNQUIESCE INSTANCE EDIT PREP/PRECOMPILE UPDATE ALERT CFG EXPORT PRUNE HISTORY/LOGFILE UPDATE COMMAND OPTIONS FORCE APPLICATION PUT ROUTINE UPDATE CONTACT GET/UPDATE ADMIN CFG QUERY CLIENT UPDATE CONTACTGROUP GET ALERT CFG QUIESCE DATABASE UPDATE NOTIFICATION LIST GET AUTHORIZATIONS QUIESCE INSTANCE UPDATE HISTORY GET/UPDATE CLI CFG QUIESCE TABLESPACES UPDATE LDAP NODE GET CONNECTION STATE QUIT UPDATE MONITOR SWITCHES GET CONTACTGROUP REBIND XQUERY Note: Some commands are operating system specific and may not be available. For further help: ? db2-command - help for specified command ? OPTIONS - help for all command options ? HELP - help for reading help screens The preceding three options can be run as db2 <option> from an OS prompt. !db2ic - DB2 Information Center (Windows only) This command can also be run as db2ic from an OS prompt.
- 6. db2 => create database slo DB20000I The CREATE DATABASE command completed successfully. db2 => connect to slo Database Connection Information Database server = DB2/SUN64 9.7.0 SQL authorization ID = DB90 <- my db2 account Local database alias = SLO
- 7. db2 => create table EMPLOYEE db2 (cont.) => (SSN varchar(9) not null, db2 (cont.) => LastNam db2 (cont.) => e varchar(20), db2 (cont.) => Firs db2 (cont.) => tName varchar(10), db2 (cont.) => Sex varchar(1), db2 (cont.) => DeptNo char(3), db2 (cont.) => primary key(SSN)) DB20000I The SQL command completed successfully.
- 8. db2 => insert into DEPARTMENT values('SG7','Safety Department','Springy') DB20000I The SQL command completed successfully.
- 9. db2 => select LastName, DeptName from Employee as e, Department as d db2 (cont.) => where e.deptno = d.deptno LASTNAME DEPTNAME -------------------- -------------------- Simpson Safety Department Green Safety Department Bing Accounting Flanders Personnel Geller Personnel 5 record(s) selected.
- 10. db2 => select Lastname, projectname db2 (cont.) => from employee e, department d, project p db2 (cont.) => where e.deptno = d.deptno and d.deptno = p.deptno LASTNAME PROJECTNAME -------------------- -------------------- Simpson New Pay Green New Pay Flanders GetThings Geller GetThings Simpson Alpha Green Alpha Simpson Omega Green Omega Bing Delta Simpson Pi Green Pi 11 record(s) selected.
- 11. db2 => select lastname from employee as e, department as d db2 (cont.) => where e.deptno = d.deptno and deptname = 'Safety Department' (line wrapped by powerpoint) LASTNAME -------------------- Simpson Green 2 record(s) selected. db2 => select lastname from employee where deptno in db2 (cont.) => (select deptno from department db2 (cont.) => where deptname = 'Safety Department') LASTNAME -------------------- Simpson Green 2 record(s) selected.
- 12. db2 => select * from employee, department SSN LASTNAME FIRSTNAME SEX DEPTNO DEPTNO DEPTNAME LOCATION --------- -------------------- ---------- --- ------ ------ -------------------- ---------- 245 Simpson Homer M SG7 SG7 Safety Department Springy 245 Simpson Homer M SG7 S8P Accounting London 245 Simpson Homer M SG7 G6H Personnel London 245 Simpson Homer M SG7 K9J InfoTech Toronto 34 Flanders Ned M G6H SG7 Safety Department Springy 34 Flanders Ned M G6H S8P Accounting London 34 Flanders Ned M G6H G6H Personnel London 34 Flanders Ned M G6H K9J InfoTech Toronto 222 Green Rachel F SG7 SG7 Safety Department Springy 222 Green Rachel F SG7 S8P Accounting London 222 Green Rachel F SG7 G6H Personnel London 222 Green Rachel F SG7 K9J InfoTech Toronto 333 Bing Changler M S8P SG7 Safety Department Springy 333 Bing Changler M S8P S8P Accounting London 333 Bing Changler M S8P G6H Personnel London 333 Bing Changler M S8P K9J InfoTech Toronto 111 Geller Monica F G6H SG7 Safety Department Springy 111 Geller Monica F G6H S8P Accounting London 111 Geller Monica F G6H G6H Personnel London 111 Geller Monica F G6H K9J InfoTech Toronto 20 record(s) selected.
- 13. db2 => select location from department union db2 (cont.) => (select projectlocation from project) 1 ---------- Hong Kong London Springy Toronto 4 record(s) selected.
- 14. db2 => create view deptlocations as select distinct location from department DB20000I The SQL command completed successfully. db2 => select * from deptlocations LOCATION ---------- London Springy Toronto 3 record(s) selected.
- 15. db2 => select * from projlocations except (select * from deptlocations) 1 ---------- Hong Kong 1 record(s) selected. db2 => select * from projlocations union select * from deptlocations 1 ---------- Hong Kong London Springy Toronto 4 record(s) selected.
- 16. db2 => select SSN as SIN from employee SIN --------- 111 222 245 333 34 5 record(s) selected.
- 17. db2 => select * from projlocations intersect select * from deptlocations 1 ---------- London Springy Toronto 3 record(s) selected.
- 18. db2 => select * from employee where firstname like 'N%' SSN LASTNAME FIRSTNAME SEX DEPTNO --------- -------------------- ---------- --- ------ 34 Flanders Ned M G6H 1 record(s) selected.
- 19. db2 => select count(*) from projemp 1 ----------- 6 1 record(s) selected.
- 20. db2 => select count(*) as numberpergroup, projectid from projemp group by projectid NUMBERPERGROUP PROJECTID -------------- --------- 2 P13 3 P35 1 P43 3 record(s) selected.
- 21. db2 => update employee set firstname = 'Bozo' where firstname = 'Ned' DB20000I The SQL command completed successfully. db2 => select * from employee SSN LASTNAME FIRSTNAME SEX DEPTNO --------- -------------------- ---------- --- ------ 245 Simpson Homer M SG7 34 Flanders Bozo M G6H 222 Green Rachel F SG7 333 Bing Changler M S8P 111 Geller Monica F G6H 5 record(s) selected.
- 22. db2 => delete from employee where lastname like 'G%' DB20000I The SQL command completed successfully. db2 => select * from employee SSN LASTNAME FIRSTNAME SEX DEPTNO --------- -------------------- ---------- --- ------ 245 Simpson Homer M SG7 34 Flanders Bozo M G6H 333 Bing Changler M S8P 3 record(s) selected.
- 23. db2 => create table junk (firstattr integer, secondattr decimal(10,2)) DB20000I The SQL command completed successfully. db2 => select * from junk FIRSTATTR SECONDATTR ----------- ------------ 0 record(s) selected. db2 => alter table junk add third varchar(20) DB20000I The SQL command completed successfully. db2 => select * from junk FIRSTATTR SECONDATTR THIRD ----------- ------------ -------------------- 0 record(s) selected.
- 24. db2 => list tables Table/View Schema Type Creation time ------------------------------- --------------- ----- -------------------------- DEPARTMENT SYLVIA T 2004-06-21-15.38.51.804343 DEPTLOCATIONS SYLVIA V 2004-06-21-16.05.12.051085 EMPLOYEE SYLVIA T 2004-06-21-15.38.35.567546 JUNK SYLVIA T 2004-06-21-16.26.20.210302 PROJECT SYLVIA T 2004-06-21-15.39.42.940604 PROJEMP SYLVIA T 2004-06-21-15.40.05.233869 PROJLOCATIONS SYLVIA V 2004-06-21-16.06.37.274142 7 record(s) selected. db2 => drop table junk DB20000I The SQL command completed successfully. db2 => list tables Table/View Schema Type Creation time ------------------------------- --------------- ----- -------------------------- DEPARTMENT SYLVIA T 2004-06-21-15.38.51.804343 DEPTLOCATIONS SYLVIA V 2004-06-21-16.05.12.051085 EMPLOYEE SYLVIA T 2004-06-21-15.38.35.567546 PROJECT SYLVIA T 2004-06-21-15.39.42.940604 PROJEMP SYLVIA T 2004-06-21-15.40.05.233869 PROJLOCATIONS SYLVIA V 2004-06-21-16.06.37.274142 6 record(s) selected.
- 25. db2 => terminate DB20000I The TERMINATE command completed successfully. obelix[33]% db2stop 10/01/2009 14:16:06 0 0 SQL1064N DB2STOP processing was successful. SQL1064N DB2STOP processing was successful.