Doubt in updating database table

hi all
i want to modify values ztable from a internal table ....
for eg : the ztable contains matnr and accept_qty
matnr qty
mat01
mat02
i need to modify qty of the table .. i am using where condition (ie modify where matnr = ) but where condition is not working for database tables .... how to proceed with this ..
thanks
lokesh

hi,
before that :- modify statemnt will modify a record if there is record having the same key like that of record in work area.
if there is no record in itab with key of work area record, it will insert a new record in itab.
look this sample code.
*modify internal table
loop at itab into wa.
wa-field1 = data1.
wa-field2 = data2.
wa-field 3= data3.
modify itab from wa transporting field1 field2 field3 where key_field = wa-keyfield. "there shuld not be any chang in key field.
endloop.
*now update database table
*work area and data base structure shuld be same type
if itab[] is not initial.
modify ztable from table itab.
endif.
rgds
anver
if hlped pls mark points

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>
S.R.Suraj wrote:
> Hi Divyesh,
>
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>
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I have to update stagging table records with status 2 and error info based on proxy table response. How this can be done?
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Moderator message: sorry, no beginner forums here, please search for available information or attend training.
locked by: Thomas Zloch on Aug 12, 2010 3:16 PM

Hi,
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Moderator message: sorry, no beginner forums here, please search for available information or attend training.
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I could only find a statement called UPDATE dbase_table FROM work_area but I dont understand how without specifying a WHERE clause it knows which rows to update.
regards
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UPDATE dbtab FROM wa. or
UPDATE (dbtabname) FROM wa.
Extras:
1. ... CLIENT SPECIFIED
2. ... CONNECTION con
Effect
Changes one single line in a database table, using a primary key to identify the line and taking the values to be changed from the specified work area, wa. The data is read out of wa from left to right, matching the line structure of the database table dbtab. The structure of wa remains unchanged. This means that wa must be at least as wide (see DATA) as the line structure of dbtab, and have the same alignment. Otherwise, a runtime error occurs.
If either the database table, dbtab, or the work area, wa, contain Strings, wa must be compatible with the line structure of dbtab.
Example
Changing the telephone number of the customer with customer number '12400177' in the current client:
DATA wa TYPE scustom.
SELECT SINGLE * FROM scustom INTO wa
WHERE id = '12400177'.
wa-telephone = '06201/44889'.
UPDATE scustom FROM wa.
When the command has been executed, the system field SY-DBCNT contains the number of updated lines (0 or 1).
Examples
Update discount for the customer with the customer number '00017777' to 3 percent (in the current client):
DATA: wa TYPE scustom.
SELECT SINGLE * FROM scustom INTO wa
WHERE id = '00017777'.
wa-discount = '003'.
UPDATE scustom FROM wa.
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SY-SUBRC = 0:
The specified line has been updated.
SY-SUBRC = 4:
The system could not update any line in the table, since there is no line with the specified primary key.
BR< JAcek

How to update database table from Internal Table

hi experts,
Can anyone please assist me in inserting records to a database table from an Internal Table
whose structures are identical.
Thanks in Advance,
Sudhaa............

Hi Sudha,
Here are some example of update and insert:
UPDATE SFLIGHT SET PLANETYPE = 'A310'
PRICE = PRICE - '100.00'
WHERE CARRID = 'LH' AND CONNID = '0402'.
This example overwrites the contents of the PLANETYPE column with A310 and decreases the value of the PRICE column by 100 for each entry in SFLIGHT where CARRID contains u2018LHu2019 and CONNID contains u2018402u2019.
TABLES SPFLI.
DATA WA TYPE SPFLI.
MOVE 'AA' TO WA-CARRID.
MOVE '0064' TO WA-CONNID.
MOVE 'WASHINGTON' TO WA-CITYFROM.
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MOVE '0017' TO SPFLI-CONNID.
MOVE 'BERLIN' TO SPFLI-CITYFROM.
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DATA: ITAB TYPE HASHED TABLE OF SPFLI
WITH UNIQUE KEY CARRID CONNID,
WA LIKE LINE OF ITAB.
WA-CARRID = 'UA'. WA-CONNID = '0011'. WA-CITYFROM = ...
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WA-CARRID = 'LH'. WA-CONNID = '1245'. WA-CITYFROM = ...
INSERT WA INTO TABLE ITAB.
WA-CARRID = 'AA'. WA-CONNID = '4574'. WA-CITYFROM = ...
INSERT WA INTO TABLE ITAB.
UPDATE SPFLI FROM TABLE ITAB.
This example fills a hashed table ITAB and then overwrites the lines in SPFLI that have the same primary key (CARRID and CONNID) as a line in the internal table.
Insert statement :
TABLES SPFLI.
DATA WA TYPE SPFLI.
WA-CARRID = 'LH'.
WA-CITYFROM = 'WASHINGTON'.
INSERT INTO SPFLI VALUES WA.
WA-CARRID = 'UA'.
WA-CITYFROM = 'LONDON'.
INSERT SPFLI FROM WA.
SPFLI-CARRID = 'LH'.
SPFLI-CITYFROM = 'BERLIN'.
INSERT SPFLI.
If the database table does not already contain a line with the same primary key as specified in the work area, the operation is completed successfully and SY-SUBRC is set to 0. Otherwise, the line is not inserted, and SY-SUBRC is set to 4.
Regards,
Premraj kaushik

Doubt in updating database table

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