INSERT or MoDIFY statement

Question

hi,
I have to insert a data for my ztable,for 1st time it is updating the data,but for the second time (since all the key fields are same as 1st record),it is going to modify the data in my table.(since i have used modify statement),But i want both the records.
any idea?

Answer 1

hi
MODIFY - Will update the table, if the data already exists, if NOT inserts new rows.
UPDATE - Will update the table, errors out if the data is not found.
In case of MODIFY the sy-subrc is always 0 so you would't know whether the data is actually updated or not.
INSERT - Inserting Data in Database Tables
Update Modify Insert stmts we use when we want to do some change / Insertion
(1) to database table from internal table or
(2) from work area to internal table.
( AA ) Update
If the intended record in the internal table is found in databse table means it will just update that record.
syntax to update database table from itab:::::
UPDATE dbtab FROM TABLE itab
Changes to lines made with the UPDATE command only becomefinal after a database commit
Without using internal table we can update database table directly as shown below:::::::::::::::::::::
TABLES SFLIGHT.
UPDATE SFLIGHT SET SEATSOCC = SEATSOCC + 3
WHERE CARRID = 'LH' AND
CONNID = '0400' AND
FLDATE = '19950228'.
( BB ) Modify is used to insert new record if the record doesnt exist in datbase table.system check this on primary key basis.
If the intended record in the internal table is found in databse table means it will just update that record.So here its equal to UPDATE stmt.
For changes to database table we use syntax as below ::::
MODIFY DatabaseTable FROM TABLE itab.
For changes to Internal table we use syntax as below ::::
MODIFY itab FROM wa INDEX idx.
http://TRANSPORTING f1 ... fn WHERE cond.
( CC ) Insert stmt is used to insert New records into databse table from internal table or to internal table from work area.
By default, data is only inserted in the current client. However, ifyou use the CLIENT SPECIFIED addition, you can switch off theautomatic client handling.
You cannot insert a table line if the table alreadycontains a record with the same primary key.
Syntax::::::::::
INSERT INTO dbtab CLIENT SPECIFIED VALUES wa.
or
INSERT (dbtabname) CLIENT SPECIFIED FROM TABLE itab.
Example
Adding customer "Robinson" to client 002:
TABLES SCUSTOM.
SCUSTOM-MANDT = '002'.
SCUSTOM-ID = '12400177'.
SCUSTOM-NAME = 'Robinson'.
SCUSTOM-POSTCODE = '69542'.
SCUSTOM-CITY = 'Heidelberg'.
SCUSTOM-CUSTTYPE = 'P'.
SCUSTOM-DISCOUNT = '003'.
SCUSTOM-TELEPHONE = '01234/56789'.
INSERT INTO SCUSTOM CLIENT SPECIFIED VALUES SCUSTOM.
Re: difference update and insert
The specified item was not found.
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regards,
Vipul