ABAP Select data from SAP table ROIJANMV_ALV3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROIJANMV_ALV3 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 ROIJANMV_ALV3. 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 ROIJANMV_ALV3 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_ROIJANMV_ALV3 TYPE STANDARD TABLE OF ROIJANMV_ALV3,
      WA_ROIJANMV_ALV3 TYPE ROIJANMV_ALV3,
      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: <ROIJANMV_ALV3> TYPE ROIJANMV_ALV3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ROIJANMV_ALV3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ROIJANMV_ALV3
  INTO TABLE IT_ROIJANMV_ALV3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIJANMV_ALV3
*  INTO TABLE @DATA(IT_ROIJANMV_ALV32).
*--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_ROIJANMV_ALV3 INDEX 1 INTO DATA(WA_ROIJANMV_ALV32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ROIJANMV_ALV3 ASSIGNING <ROIJANMV_ALV3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIJANMV_ALV3>-NOITEM = 1.
<ROIJANMV_ALV3>-NOMNR = 1.
<ROIJANMV_ALV3>-ARKEY = 1.
<ROIJANMV_ALV3>-SITYP = 1.
<ROIJANMV_ALV3>-TEXT1 = 1.

ENDLOOP.

LOOP AT IT_ROIJANMV_ALV3 INTO WA_ROIJANMV_ALV3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIJANMV_ALV3-IDATE, sy-vline,
  WA_ROIJANMV_ALV3-MATNR_I, sy-vline,
  WA_ROIJANMV_ALV3-LOCID, sy-vline,
  WA_ROIJANMV_ALV3-LOCNAM, sy-vline,
  WA_ROIJANMV_ALV3-MENGE, sy-vline,
  WA_ROIJANMV_ALV3-UNIT_I, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIJANMV_ALV3 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_ROIJANMV_ALV3 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_ROIJANMV_ALV3 INTO WA_ROIJANMV_ALV3.


*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_I
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROIJANMV_ALV3-MATNR_I
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJANMV_ALV3-MATNR_I.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_I
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIJANMV_ALV3-UNIT_I
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJANMV_ALV3-UNIT_I.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ACTUALUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIJANMV_ALV3-ACTUALUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJANMV_ALV3-ACTUALUOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJANMV_ALV3-PARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJANMV_ALV3-PARTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TANK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJANMV_ALV3-TANK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJANMV_ALV3-TANK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJANMV_ALV3-CONS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJANMV_ALV3-CONS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONPAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJANMV_ALV3-CONPAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJANMV_ALV3-CONPAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INSPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJANMV_ALV3-INSPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJANMV_ALV3-INSPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field IMPOEXPO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIJANMV_ALV3-IMPOEXPO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIJANMV_ALV3-IMPOEXPO.
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_ROIJANMV_ALV3_STR, 
NOITEM TYPE STRING,
NOMNR TYPE STRING,
ARKEY TYPE STRING,
SITYP TYPE STRING,
TEXT1 TYPE STRING,
IDATE TYPE STRING,
MATNR_I TYPE STRING,
LOCID TYPE STRING,
LOCNAM TYPE STRING,
MENGE TYPE STRING,
UNIT_I TYPE STRING,
ACTUALQTY TYPE STRING,
ACTUALUOM TYPE STRING,
ISTAT TYPE STRING,
TEXT2 TYPE STRING,
PARTNR TYPE STRING,
CHARG_O TYPE STRING,
TANK TYPE STRING,
CHARG_D TYPE STRING,
CONS TYPE STRING,
CONPAT TYPE STRING,
INSPE TYPE STRING,
IMPOEXPO TYPE STRING,
OWNER TYPE STRING,
AENAM TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
ERDAT TYPE STRING,
COUNT1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIJANMV_ALV3_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_ROIJANMV_ALV3_STR-NOITEM sy-vline 
WA_ROIJANMV_ALV3_STR-NOMNR sy-vline 
WA_ROIJANMV_ALV3_STR-ARKEY sy-vline 
WA_ROIJANMV_ALV3_STR-SITYP sy-vline 
WA_ROIJANMV_ALV3_STR-TEXT1 sy-vline 
WA_ROIJANMV_ALV3_STR-IDATE sy-vline 
WA_ROIJANMV_ALV3_STR-MATNR_I sy-vline 
WA_ROIJANMV_ALV3_STR-LOCID sy-vline 
WA_ROIJANMV_ALV3_STR-LOCNAM sy-vline 
WA_ROIJANMV_ALV3_STR-MENGE sy-vline 
WA_ROIJANMV_ALV3_STR-UNIT_I sy-vline 
WA_ROIJANMV_ALV3_STR-ACTUALQTY sy-vline 
WA_ROIJANMV_ALV3_STR-ACTUALUOM sy-vline 
WA_ROIJANMV_ALV3_STR-ISTAT sy-vline 
WA_ROIJANMV_ALV3_STR-TEXT2 sy-vline 
WA_ROIJANMV_ALV3_STR-PARTNR sy-vline 
WA_ROIJANMV_ALV3_STR-CHARG_O sy-vline 
WA_ROIJANMV_ALV3_STR-TANK sy-vline 
WA_ROIJANMV_ALV3_STR-CHARG_D sy-vline 
WA_ROIJANMV_ALV3_STR-CONS sy-vline 
WA_ROIJANMV_ALV3_STR-CONPAT sy-vline 
WA_ROIJANMV_ALV3_STR-INSPE sy-vline 
WA_ROIJANMV_ALV3_STR-IMPOEXPO sy-vline 
WA_ROIJANMV_ALV3_STR-OWNER sy-vline 
WA_ROIJANMV_ALV3_STR-AENAM sy-vline 
WA_ROIJANMV_ALV3_STR-ERNAM sy-vline 
WA_ROIJANMV_ALV3_STR-AEDAT sy-vline 
WA_ROIJANMV_ALV3_STR-ERDAT sy-vline 
WA_ROIJANMV_ALV3_STR-COUNT1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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