ABAP Select data from SAP table ROIJTLMF4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROIJTLMF4 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to ROIJTLMF4. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the ROIJTLMF4 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_ROIJTLMF4 TYPE STANDARD TABLE OF ROIJTLMF4,
      WA_ROIJTLMF4 TYPE ROIJTLMF4,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <ROIJTLMF4> TYPE ROIJTLMF4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ROIJTLMF4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ROIJTLMF4
  INTO TABLE IT_ROIJTLMF4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJTLMF4
*  INTO TABLE @DATA(IT_ROIJTLMF42).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_ROIJTLMF4 INDEX 1 INTO DATA(WA_ROIJTLMF42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ROIJTLMF4 ASSIGNING <ROIJTLMF4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJTLMF4>-MANDT = 1.
<ROIJTLMF4>-TSYST = 1.
<ROIJTLMF4>-LOCID = 1.
<ROIJTLMF4>-LOCNAM = 1.
<ROIJTLMF4>-TSLOCID = 1.

ENDLOOP.

LOOP AT IT_ROIJTLMF4 INTO WA_ROIJTLMF4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJTLMF4-TSLOCNAM, sy-vline,
  WA_ROIJTLMF4-ODINDO, sy-vline,
  WA_ROIJTLMF4-ODINDD, sy-vline,
  WA_ROIJTLMF4-CONSIND, sy-vline,
  WA_ROIJTLMF4-ERDAT, sy-vline,
  WA_ROIJTLMF4-ERZEIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJTLMF4 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_ROIJTLMF4 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_ROIJTLMF4 INTO WA_ROIJTLMF4.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROIJTLMF4-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJTLMF4-MATNR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ROIJTLMF4_STR, 
MANDT TYPE STRING,
TSYST TYPE STRING,
LOCID TYPE STRING,
LOCNAM TYPE STRING,
TSLOCID TYPE STRING,
TSLOCNAM TYPE STRING,
ODINDO TYPE STRING,
ODINDD TYPE STRING,
CONSIND TYPE STRING,
ERDAT TYPE STRING,
ERZEIT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AEZEIT TYPE STRING,
AENAM TYPE STRING,
BLOIND TYPE STRING,
DELIND TYPE STRING,
TKTSELECT TYPE STRING,
LOCID_PARENT TYPE STRING,
BRANCH_NR TYPE STRING,
BRANCH_SEQ TYPE STRING,
MTEXT TYPE STRING,
TSNAM TYPE STRING,
MATNR TYPE STRING,
MATNAM TYPE STRING,
LWERK TYPE STRING,
TWERK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJTLMF4_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_ROIJTLMF4_STR-MANDT sy-vline 
WA_ROIJTLMF4_STR-TSYST sy-vline 
WA_ROIJTLMF4_STR-LOCID sy-vline 
WA_ROIJTLMF4_STR-LOCNAM sy-vline 
WA_ROIJTLMF4_STR-TSLOCID sy-vline 
WA_ROIJTLMF4_STR-TSLOCNAM sy-vline 
WA_ROIJTLMF4_STR-ODINDO sy-vline 
WA_ROIJTLMF4_STR-ODINDD sy-vline 
WA_ROIJTLMF4_STR-CONSIND sy-vline 
WA_ROIJTLMF4_STR-ERDAT sy-vline 
WA_ROIJTLMF4_STR-ERZEIT sy-vline 
WA_ROIJTLMF4_STR-ERNAM sy-vline 
WA_ROIJTLMF4_STR-AEDAT sy-vline 
WA_ROIJTLMF4_STR-AEZEIT sy-vline 
WA_ROIJTLMF4_STR-AENAM sy-vline 
WA_ROIJTLMF4_STR-BLOIND sy-vline 
WA_ROIJTLMF4_STR-DELIND sy-vline 
WA_ROIJTLMF4_STR-TKTSELECT sy-vline 
WA_ROIJTLMF4_STR-LOCID_PARENT sy-vline 
WA_ROIJTLMF4_STR-BRANCH_NR sy-vline 
WA_ROIJTLMF4_STR-BRANCH_SEQ sy-vline 
WA_ROIJTLMF4_STR-MTEXT sy-vline 
WA_ROIJTLMF4_STR-TSNAM sy-vline 
WA_ROIJTLMF4_STR-MATNR sy-vline 
WA_ROIJTLMF4_STR-MATNAM sy-vline 
WA_ROIJTLMF4_STR-LWERK sy-vline 
WA_ROIJTLMF4_STR-TWERK sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.