concatenate in append

[Former Member]

how do I concatenate in a loop but in append the data and not removing.

why using: loop .. concatenate lv_string lv_string2 into lv_stirng3 .. endloop

it overwrites the data with the last data of the loopp,

how can I append the data in the lv_string3 without deleting the previous ones?

[FredericGirod]

Sorry, could you clarify your requirement ?

[geert-janklaps]

Hi,

That's quite easy to with following (pseudo) code (lv_string will contain the full concatenated data):

DATA: lv_string TYPE string.

LOOP AT <your_table> INTO <your_structure>.
CONCATENATE lv_string <your_second_second_string> <your_third_string> INTO lv_string.
ENDLOOP. 

Best regards,

Geert-Jan Klaps

[Former Member]

how come every time it overwrites the previous one at every turn of the loop?

[geert-janklaps]

Because with the into statement you move the value of the concatenation to your variable.

Basically your doing: lv_string = 'value 1' + 'value 2' + 'value 3'.

By adding your variable in the concatenation you ensure your previous value is concatenated with the new additional values.

[former_member39602]

Hi Nick,

write as below

loop.... concatenate lv_string3 lv_string lv_string2 into lv_string3... endloop.

Or

use ABAP 7.4 syntax in the same way.

lv_string3 = |{ lv_string3 }{ lv_string }{ lv_string2 }|.

[Former Member]

for example if they are in a cycle:

loop at <my_table> into <my_structure>.

CONCATENATE my_structure-string1 my_structure-string2 INTO stringtot SEPARATED BY ','.

* here stringtot will contain the values of the first lap of the loop, on the second lap

* I want you to add me the data of the second lap and not overwrite the previous ones

* if, for example, on the first round stringtot is equal to 'hello', the second round must contain 'hello' 'world'.

endloop.