How to Insert data from Table A to Table B

[Former Member]

Hi,

I have to insert data from Table A into Table B.

Table A is having 100 records and table B is having 10000 records.

Condition is if data in Table A is not in table B then I have to insert into Table B or else I have to skip that.

Can anyone help me with sample code.

Thanks in advance and points are awarded for usefull answers.

Thanks,

Kumar.

[Former Member]

THere are a couple ways of doing this. Here is one simple way. Of course, this is assuming that the tables have exactly the same structure

data: itaba type table of ztaba with header line.
data: itabb type table of ztabb with header line.

select * into table itaba from ztaba.
select * into table itabb from ztabb.

loop at itaba.

read table itabb with key fld1 = itaba-fld1
                          fld2 = itaba-fld2.
if sy-subrc <> 0.
 insert ztabb from itaba.
endif.

endloop.

Regards,

Rich Heilman

[RichHeilman]

THere are a couple ways of doing this. Here is one simple way. Of course, this is assuming that the tables have exactly the same structure

data: itaba type table of ztaba with header line.
data: itabb type table of ztabb with header line.

select * into table itaba from ztaba.
select * into table itabb from ztabb.

loop at itaba.

read table itabb with key fld1 = itaba-fld1
                          fld2 = itaba-fld2.
if sy-subrc <> 0.
 insert ztabb from itaba.
endif.

endloop.

Regards,

Rich Heilman

[uwe_schieferstein]

Hello Kumar

Assuming that tables A and B have the same structure you can use the same logic as change documents are prepared. Assuming both of your itabs are of structure struc_a. Then define the following type:

TYPES: BEGIN OF ty_s_itab_di.  
INCLUDE TYPE struc_a.
TYPES: CHIND  TYPE bu_chind.
TYPES: END OF ty_s_itab_di.
TYPES: ty_t_itab_di  TYPE STANDARD TABLE OF ty_s_itab_di                      
WITH DEFAULT KEY.
DATA:    gt_itab_old  TYPE ty_t_itab_di,
gt_itab_new TYPE ty_t_itab_di.

• Fill itabs gt_Itab_old with the corresponding data of itab1 and gt_itab_new with the corresponding data of itab2.

*

• Very important: sort you itabs either by all key fields or by all fields.

*

• Call function <b>CHANGEDOCUMENT_PREPARE_TABLES</b> with the following parameters:

- CHECK_INDICATOR = ' '

- TABLE_NEW = gt_Itab_new

- TABLE_OLD = gt_itab_old

The function module will remove identical lines from both itabs. New entries in gt_itab_New will have CHIND = 'I' and deleted entries in gt_itab_old will have CHIND = 'D'. Modified entries are indicated by CHIND = 'U'.

Read the documentation of the function module and play around with it. You will see that this a quite easy yet powerful approach for comparing itabs.

Regards

Uwe

[Former Member]

Hello Kumar,

Not sure of the details of table A & B.

If they have the same structure.

Try - INSERT LINES OF itabA into itabB.

Then you could use DELETE ADJACENT DUPLICATES FROM itabB.

You may be able to find other options from HELP for INSERT.

Greg Kern

[shishupalreddy]

Hi Kumar,

You can go with the solution provided by Rich if the two tables are related .

or You can choose the follwing.

Assume ITAB JTAB having the data .

use the sample code

APPEND LINES OF ITAB[] TO JTAB[].

SORT jtab.

delete adjacent duplicates from jtab.

Hope this will help you.

regards,

[former_member235542]

Hi Kumar,

May the following code help u.

Essentials before using:

the two itabs should be sorted.

DATA: bkpf_index LIKE sy-tabix,

bseg_index LIKE sy-tabix.

CLEAR: bkpf_reads,

bseg_reads.

SORT: bkpf_tab BY bukrs belnr gjahr,

bseg_tab BY bukrs belnr gjahr.

bseg_index = 1.

LOOP AT bkpf_tab

INTO bkpf_lin.

bkpf_reads = bkpf_reads + 1.

LOOP AT bseg_tab INTO bseg_lin FROM bseg_index.

IF bseg_lin-bukrs <> bkpf_lin-bukrs OR

bseg_lin-belnr <> bkpf_lin-belnr OR

bseg_lin-gjahr <> bkpf_lin-gjahr.

bseg_index = sy-tabix.

EXIT.

ELSE.

bseg_reads = bseg_reads + 1.

ENDIF.

ENDLOOP.

ENDLOOP.