How to view DB2 Table structure

Question

How to view the table structure in DB2 database

Answer 1

php example for iSeries (as400) db2, yes this worked!

$i5 = db2_connect($database, $user, $password, array("i5_lib"=>"qsys2"));

$querydesc = "select * from qsys2.syscolumns where table_schema = '".$library."' and table_name = '".$table_name."' ";

$result = db2_exec($i5, $querydesc);

also if you just want to list all tables with their descriptions

$query = "select TABLE_NAME, TABLE_TEXT from systables where table_schema = '$library' ";

$result = db2_exec($i5, $query);

Answer 2

FOR TABLE DESCRIPTION IN IBM DB2 10.7 VERSION I TRIED THIS AND IT WORKED FINE

SELECT NAME,COLTYPE,NULLS,LONGLENGTH FROM SYSIBM.SYSCOLUMNS where TBcreator =SCHEMANAME and TBNAME =TABLENAME;

Answer 3

The OP doesn't mention if this is DB2/400 being discussed, but I found that the only way I could get the table structure including the column name descriptions was to use DSPFFD.

DSPFFD FILE(TBNAME) OUTPUT(*OUTFILE) OUTFILE(SOMELIB/TBDESC)

This puts the description of TBNAME in a table called TBDESC in the SOMELIB library. You can then query that with:

select * from SOMELIB/TBDESC

Answer 4

if you're using Aqua Data studio, simply write select * from table_name and instead of pressing execute,, press ctrl +D .

You shall be able to see the description for the table

Answer 5

Generally it's easiest to use DESCRIBE.

DESCRIBE TABLE MYSCHEMA.TABLE

or

DESCRIBE INDEXES FOR MYSCHEMA.TABLE SHOW DETAIL

etc.

See the documentation: DESCRIBE command

Answer 6

You can Get the table meta data using this query

SELECT * FROM SYSIBM.COLUMNS WHERE TABLE_NAME = 'ASTPCLTEXT';