I have one doubt. May I know what the difference between LIKE and LIKE LINE OF in ABAP is? I have seen somewhere that while declaring the work area they are declaring.
wa LIKE it_one
wa LIKE LINE OF it_one
LIKE LINE OF means that the variable will be of the table line type.
LIKE means that the variable will be exactly of the same type as the one sitting after this key word.
Example
TYPES: BEGIN OF t_my_example_structure,
my_example_field1 TYPE i,
my_example_field2 TYPE n,
END OF t_my_example_structure.
TYPES tt_my_example_structure TYPE STANDARD TABLE OF t_my_example_structure.
DATA: l_tab_my_example TYPE tt_my_example_structure.
* has structure of row of l_tab_my_example so in this case t_my_example_structure.
DATA: l_str_my_example LIKE LINE OF l_tab_my_example.
* is exactly the same table type as l_tab_my_example so in this case tt_my_example_structure.
DATA: l_tab_like_my_example LIKE l_tab_my_example.
* I use it often for LOOP AT <tab> ASSIGNING <fs>.
FIELD-SYMBOLS: <fs_str_my_example> LIKE LINE OF l_tab_my_example.
Well, the difference is when you pass table into subroutine with USING or TABLES.
In 1st case you will get a table without headerline, thus WA_LIKE will be a table too.
In 2nd case IT_DATA will be a table with headerline: this causes IT_DATA actually means IT_DATA as structure or IT_DATA[] as table, depending on context. Particulary, DATA ... LIKE IT_DATA will refer to headerline, and not entire internal table.
You may check this using a debugger:
DATA T_DATA TYPE STRING_TABLE.
PERFORM TEST_01 USING T_DATA.
PERFORM TEST_02 TABLES T_DATA.
FORM TEST_01 USING IT_DATA TYPE STRING_TABLE.
DATA : WA_LIKE LIKE IT_DATA "This is a Table
, WA_LINE LIKE LINE OF IT_DATA.
BREAK-POINT.
ENDFORM.
FORM TEST_02 TABLES IT_DATA TYPE STRING_TABLE.
DATA : WA_LIKE LIKE IT_DATA "This is a String
, WA_LINE LIKE LINE OF IT_DATA.
BREAK-POINT.
ENDFORM.
Related
In the below code, I read data from database table with SELECT into the internal table dresult.
Reading the first line of the internal table displays the expected result, but using the LOOP displays nothing.
What's the issue?
Note: I tried to remove ENDSELECT and it worked. Why?
REPORT ZTEST02.
"Detail Informaion
TYPES : BEGIN OF details,
d1 type arktx, " description
d2 type lfimg, "quantity
END OF details.
DATA : dresult TYPE TABLE OF details WITH HEADER LINE,
t_dresult TYPE details,
sdno TYPE vbeln.
PARAMETERS packo TYPE vbeln OBLIGATORY MATCHCODE OBJECT f4_likp.
START-OF-SELECTION.
SELECT arktx,lfimg
INTO #dresult
FROM lips as detail
LEFT JOIN marm as material
ON detail~matnr = material~matnr
LEFT OUTER JOIN vbak
ON detail~vgbel = vbak~vbeln
WHERE detail~vbeln = #packo.
ENDSELECT.
READ TABLE dresult into t_dresult INDEX 1.
write: t_dresult-d1,t_dresult-d2.
LOOP AT dresult INTO t_dresult.
write: t_dresult-d1,t_dresult-d2.
ENDLOOP.
With SELECT ... ENDSELECT you select the data into a work area (INTO #dresult - which is actually the header line of the internal table with the same name). As result the internal table dresult does not contain any data, so the LOOP and the READ TABLE won't work.
I would declare the internal table without HEADER LINE and remove ENDSELECT:
DATA: dresult type STANDARD TABLE OF details,
...
SELECT ...
INTO TABLE #dresult
Moreover, after READ TABLE, it is always good to check if an entry was found:
READ TABLE ...
IF sy-subrc EQ 0.
...
ENDIF.
I am getting this syntax error:
"WA_1" cannot be converted to the line type of "IT_1"
I'm trying to display contents from internal table as follows:
REPORT ZSAM.
DATA: ITable Type ZMUAZ_STRUCTURE OCCURS 10,
IT_1 Type ZSTRUCT1 OCCURS 10,
IT_2 Type ZSTRUCT2 OCCURS 10,
WA_1 like IT_1,
WA_2 like IT_2,
WA_3 like ITable.
WRITE: 'vbeln', 'vtweg', 'posnr', 'matnrr','vrkme'.
select vbeln audat netwr waerk vkorg vtweg from VBAK into corresponding fields of Table IT_1.
LOOP AT IT_1 INTO WA_1.
write: / WA_1-vbeln, WA_1-audat, WA_1-netwr, WA_1-waerk, WA_1-vkorg, WA_1-vtweg.
endloop.
Any idea how to resolve this error?
wa_1 is declared as internal table (not as work area). The simplest solution is to complete the declaration with LINE OF:
... wa_1 LIKE LINE OF it_1,
However declaring internal tables and work areas like you did with OCCURS is obsolete, its modern equivalent is STANDARD TABLE OF :
DATA: it_1 TYPE STANDARD TABLE OF zstruct1,
wa_1 TYPE zstruct1.
I concatenated values of select-options and a parameter. The condition of that query is based on the concatenated data. I can get all the data i need.
here's my code:
TABLES: bkpf.
SELECT-OPTIONS: s_belnr FOR bkpf-belnr NO-EXTENSION OBLIGATORY .
PARAMETERS: p_ghjahr LIKE bkpf-gjahr DEFAULT sy-datum(4) OBLIGATORY. "Fiscal
DATA: it_con TYPE TABLE OF BKPF,
ls_con TYPE bkpf-AWKEY,
lv_belnr LIKE bkpf-belnr,
IT TYPE STANDARD TABLE OF BKPF,
WA TYPE BKPF.
IF s_belnr-high IS INITIAL.
CONCATENATE s_belnr-low p_ghjahr INTO ls_con.
APPEND ls_con TO it_con.
ELSE.
lv_belnr = s_belnr-low.
WHILE lv_belnr LE s_belnr-high.
CONCATENATE lv_belnr p_ghjahr INTO ls_con.
APPEND ls_con TO it_con.
ADD 1 TO lv_belnr.
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_INPUT'
EXPORTING
input = lv_belnr
IMPORTING
output = lv_belnr.
ENDWHILE.
ENDIF.
LOOP AT it_concats INTO ls_concats.
SELECT BELNR
FROM BKPF
INTO CORRESPONDING FIELDS OF TABLE IT
FOR ALL ENTRIES IN IT_CONCATS
WHERE AWKEY EQ IT_CONCATS-AWKEY.
ENDLOOP.
LOOP AT IT INTO WA.
WRITE: / WA-BELNR.
ENDLOOP.
Ignoring (because your question is too vague), the type of document you are looking for, I'll suggest something like
(WARNING, I do NOT provide full answers, just code snipets who you must tune to make it work; if someone wants to improve my answer, feel free to do it, and I'll gladly will vote the new one as the good one... if it is)
data: awkey_range type range of bkpf-awkey,
awkey_line like line of awkey_range.
* Fill the awkey_range with something like
awkey_line-sign = 'I'.
awkey_line-option = 'EQ'.
* loop at bkpf_table into bkpf_line.
* concatenate bkpf_line-belnr bkpf_line-ghjahr into awkey_line-low.
* append awkey_line to awkey_range.
* endloop.
* And then a single SQL
select *
from bkpf
into table IT "Ouch, what a name
where awkey in awkey_range.
And it should work, if I'm not missing something.
TABLES: VBRK.
DATA: BEGIN OF it_test,
BUKRS LIKE VBRK-BUKRS,
FKDAT LIKE VBRK-FKDAT,
END OF it_test.
DATA: wa_test LIKE it_test.
SELECT * FROM VBRK INTO CORRESPONDING FIELD OF wa_test.
IF wa_test-BUKRS = 'xxxx'.
wa_test-BUKRS = 'XXXXX' "Problem occurs here as the BUKRS allow 4 value
APPEND wa_test TO it_test.
ENDIF.
Then I want to map the internal table to output as ALV table. Is they any way to change the field length afterwards?
Apart from multiple issues in your code, you can't. If you need something similar to that, add an additional field to the structure with whatever size you require and copy the values over.
If the objective is to output something to the screen that is different(or differently formatted) that what is stored internally(or in the database), then the use of a data element with a conversion exit maybe the way to go.
For an example, look at the key fields of table PRPS.
Expanding the answer of vwegert:
The MOVE-CORRESPONDINGcommand (and SELECT ... INTO CORRESPONDING FIELDS) don't need the same field type. The content is converted. So you could define a 5-character field in your internal structure and copy the BUKRS-value into this 5-character field:
TABLES: VBRK.
DATA: BEGIN OF it_test,
BUKRS(5), "longer version of VBRK-BUKRS,
FKDAT LIKE VBRK-FKDAT,
END OF it_test.
DATA: tt_test TYPE STANDARD TABLE OF it_test.
* I would strongly recommend to set a filter!
SELECT * FROM VBRK INTO CORRESPONDING FIELD OF it_test.
IF it_test-BUKRS = 'xxxx'.
it_test-BUKRS = 'XXXXX'.
APPEND it_test to tt_test.
ENDIF.
ENDSELECT.
A pitfall: When you use it with ALV you will loose the field description. (on the other side, the field description of the original field will not fit any longer the new field.)
I have a database table named zrswheel .I entered 3 datas and want to show them on screen.Here s my code
REPORT ZRS_WHEEL.
TYPES:
BEGIN OF ty_zrswheel,
lv_brand TYPE c,
lv_dimension TYPE i,
lv_pressure TYPE i,
END OF ty_zrswheel.
DATA:
wa_zrswheel TYPE ty_zrswheel,
it_zrswheel TYPE TABLE of ty_zrswheel.
SELECT dimension pressure brand
FROM zrswheel
INTO TABLE it_zrswheel.
*WHERE ID=''.
IF sy-subrc NE 0.
write: 'There is an Error in retrieving data.'.
ELSE.
LOOP AT it_zrswheel INTO wa_zrswheel.
WRITE: wa_zrswheel-lv_dimension,wa_zrswheel-lv_brand,wa_zrswheel-lv_pressure.
NEW-LINE.
ENDLOOP.
ENDIF.
When I execute I get this error:
Runtime Errors : DBIF_RSQL_INVALID_RSQL
Except. CX_SY_OPEN_SQL_DB
What is the structure of your zrswheel?
Does it fit to your internal structure ty_zrswheel?
Without knowing the structure of zrswheel, nobody can help you.
The following is just a guess from my side.
It is very unusual to call fields in a structure like lv_.
So I think your zrswheel is defined as:
dimension type c,
brand type i
pressure type i
I think your report should look like:
REPORT ZRS_WHEEL.
DATA:
wa_zrswheel TYPE zrswheel,
it_zrswheel TYPE TABLE of zrswheel.
SELECT * FROM zrswheel INTO TABLE it_zrswheel.
LOOP AT it_zrswheel INTO wa_zrswheel.
WRITE: / wa_zrswheel-dimension,wa_zrswheel-brand,wa_zrswheel-pressure.
ENDLOOP.
IF sy-subrc NE 0.
write: 'Nothing found'.
ENDIF.
If you want only select an extract of zrswheel, then try:
REPORT ZRS_WHEEL.
TYPES:
BEGIN OF ty_zrswheel,
brand LIKE zrswheel-brand, "or lv_brand?
dimension LIKE zrswheel-dimension, "or lv_dimension?,
pressure LIKE zrswheel-pressure, "or lv_pressure?,
END OF ty_zrswheel.
DATA:
wa_zrswheel TYPE ty_zrswheel,
it_zrswheel TYPE TABLE of ty_zrswheel.
SELECT *FROM zrswheel
INTO corresponding fields of TABLE it_zrswheel.
LOOP AT it_zrswheel INTO wa_zrswheel.
WRITE: / wa_zrswheel-dimension,wa_zrswheel-brand,wa_zrswheel-pressure.
ENDLOOP.
IF sy-subrc NE 0.
write: 'There is an Error in retrieving data.'.
ENDIF.
Remark:
I'm not sure about the correct syntax of INTO CORRESPONDING FIELDS - please check the online help or wait for my update when I have a SAP-system to check the syntax)
Check your order of fields in the structure and in the select statement. Ensure the data types and length match for the fields .