ABAP Select data from SAP table MAAPV into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MAAPV 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 MAAPV. 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 MAAPV 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_MAAPV TYPE STANDARD TABLE OF MAAPV,
      WA_MAAPV TYPE MAAPV,
      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: <MAAPV> TYPE MAAPV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MAAPV
*  INTO TABLE @DATA(IT_MAAPV2).
*--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_MAAPV INDEX 1 INTO DATA(WA_MAAPV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MAAPV>-MATNR = 1.
<MAAPV>-ZIEME = 1.
<MAAPV>-BRGEW = 1.
<MAAPV>-NTGEW = 1.
<MAAPV>-GEWEI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MAAPV-VOLUM, sy-vline,
  WA_MAAPV-VOLEH, sy-vline,
  WA_MAAPV-RAUBE, sy-vline,
  WA_MAAPV-TEMPB, sy-vline,
  WA_MAAPV-VKORG, sy-vline,
  WA_MAAPV-VTWEG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MAAPV 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_MAAPV 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_MAAPV INTO WA_MAAPV.


*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_MAAPV-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAAPV-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit EAN11, internal->external for field EAN11
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_MAAPV-EAN11
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAAPV-EAN11.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CHCMI, internal->external for field CHML_CMPLNC_RLVNCE_IND
CALL FUNCTION 'CONVERSION_EXIT_CHCMI_OUTPUT'
  EXPORTING
    input =                      WA_MAAPV-CHML_CMPLNC_RLVNCE_IND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAAPV-CHML_CMPLNC_RLVNCE_IND.
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_MAAPV_STR, 
MATNR TYPE STRING,
ZIEME TYPE STRING,
BRGEW TYPE STRING,
NTGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
RAUBE TYPE STRING,
TEMPB TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
VERSG TYPE STRING,
BONUS TYPE STRING,
PROVG TYPE STRING,
SKTOF TYPE STRING,
VMSTA TYPE STRING,
VMSTD TYPE STRING,
AUMNG TYPE STRING,
LFMNG TYPE STRING,
EFMNG TYPE STRING,
SCMNG TYPE STRING,
SCHME TYPE STRING,
VRKME TYPE STRING,
SPART TYPE STRING,
ARKTX TYPE STRING,
PRODH TYPE STRING,
PMATN TYPE STRING,
MTPOS TYPE STRING,
DWERK TYPE STRING,
MEINS TYPE STRING,
TRAGR TYPE STRING,
MATKL TYPE STRING,
MTART TYPE STRING,
KONDM TYPE STRING,
KTGRM TYPE STRING,
MVGR1 TYPE STRING,
MVGR2 TYPE STRING,
MVGR3 TYPE STRING,
MVGR4 TYPE STRING,
MVGR5 TYPE STRING,
PRDHA TYPE STRING,
EAN11 TYPE STRING,
DISST TYPE STRING,
KUNNR TYPE STRING,
VHART TYPE STRING,
FUELG TYPE STRING,
STFAK TYPE STRING,
MAGRV TYPE STRING,
ERGEI TYPE STRING,
ERGEW TYPE STRING,
ERVOE TYPE STRING,
ERVOL TYPE STRING,
GEWTO TYPE STRING,
VOLTO TYPE STRING,
PRAT1 TYPE STRING,
PRAT2 TYPE STRING,
PRAT3 TYPE STRING,
PRAT4 TYPE STRING,
PRAT5 TYPE STRING,
PRAT6 TYPE STRING,
PRAT7 TYPE STRING,
PRAT8 TYPE STRING,
PRAT9 TYPE STRING,
PRATA TYPE STRING,
MLGUT TYPE STRING,
KZUMW TYPE STRING,
KOSCH TYPE STRING,
ATTYP TYPE STRING,
MBRSH TYPE STRING,
KZGVH TYPE STRING,
MSTAV TYPE STRING,
MSTDV TYPE STRING,
KZWSM TYPE STRING,
PROFL TYPE STRING,
MPROF TYPE STRING,
SATNR TYPE STRING,
KZKFG TYPE STRING,
MTPOS_MARA TYPE STRING,
VAVME TYPE STRING,
BFLME TYPE STRING,
PVMSO TYPE STRING,
SGT_REL TYPE STRING,
CHML_CMPLNC_RLVNCE_IND TYPE STRING,
COLOR TYPE STRING,
SIZE1 TYPE STRING,
SIZE2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MAAPV_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_MAAPV_STR-MATNR sy-vline 
WA_MAAPV_STR-ZIEME sy-vline 
WA_MAAPV_STR-BRGEW sy-vline 
WA_MAAPV_STR-NTGEW sy-vline 
WA_MAAPV_STR-GEWEI sy-vline 
WA_MAAPV_STR-VOLUM sy-vline 
WA_MAAPV_STR-VOLEH sy-vline 
WA_MAAPV_STR-RAUBE sy-vline 
WA_MAAPV_STR-TEMPB sy-vline 
WA_MAAPV_STR-VKORG sy-vline 
WA_MAAPV_STR-VTWEG sy-vline 
WA_MAAPV_STR-VERSG sy-vline 
WA_MAAPV_STR-BONUS sy-vline 
WA_MAAPV_STR-PROVG sy-vline 
WA_MAAPV_STR-SKTOF sy-vline 
WA_MAAPV_STR-VMSTA sy-vline 
WA_MAAPV_STR-VMSTD sy-vline 
WA_MAAPV_STR-AUMNG sy-vline 
WA_MAAPV_STR-LFMNG sy-vline 
WA_MAAPV_STR-EFMNG sy-vline 
WA_MAAPV_STR-SCMNG sy-vline 
WA_MAAPV_STR-SCHME sy-vline 
WA_MAAPV_STR-VRKME sy-vline 
WA_MAAPV_STR-SPART sy-vline 
WA_MAAPV_STR-ARKTX sy-vline 
WA_MAAPV_STR-PRODH sy-vline 
WA_MAAPV_STR-PMATN sy-vline 
WA_MAAPV_STR-MTPOS sy-vline 
WA_MAAPV_STR-DWERK sy-vline 
WA_MAAPV_STR-MEINS sy-vline 
WA_MAAPV_STR-TRAGR sy-vline 
WA_MAAPV_STR-MATKL sy-vline 
WA_MAAPV_STR-MTART sy-vline 
WA_MAAPV_STR-KONDM sy-vline 
WA_MAAPV_STR-KTGRM sy-vline 
WA_MAAPV_STR-MVGR1 sy-vline 
WA_MAAPV_STR-MVGR2 sy-vline 
WA_MAAPV_STR-MVGR3 sy-vline 
WA_MAAPV_STR-MVGR4 sy-vline 
WA_MAAPV_STR-MVGR5 sy-vline 
WA_MAAPV_STR-PRDHA sy-vline 
WA_MAAPV_STR-EAN11 sy-vline 
WA_MAAPV_STR-DISST sy-vline 
WA_MAAPV_STR-KUNNR sy-vline 
WA_MAAPV_STR-VHART sy-vline 
WA_MAAPV_STR-FUELG sy-vline 
WA_MAAPV_STR-STFAK sy-vline 
WA_MAAPV_STR-MAGRV sy-vline 
WA_MAAPV_STR-ERGEI sy-vline 
WA_MAAPV_STR-ERGEW sy-vline 
WA_MAAPV_STR-ERVOE sy-vline 
WA_MAAPV_STR-ERVOL sy-vline 
WA_MAAPV_STR-GEWTO sy-vline 
WA_MAAPV_STR-VOLTO sy-vline 
WA_MAAPV_STR-PRAT1 sy-vline 
WA_MAAPV_STR-PRAT2 sy-vline 
WA_MAAPV_STR-PRAT3 sy-vline 
WA_MAAPV_STR-PRAT4 sy-vline 
WA_MAAPV_STR-PRAT5 sy-vline 
WA_MAAPV_STR-PRAT6 sy-vline 
WA_MAAPV_STR-PRAT7 sy-vline 
WA_MAAPV_STR-PRAT8 sy-vline 
WA_MAAPV_STR-PRAT9 sy-vline 
WA_MAAPV_STR-PRATA sy-vline 
WA_MAAPV_STR-MLGUT sy-vline 
WA_MAAPV_STR-KZUMW sy-vline 
WA_MAAPV_STR-KOSCH sy-vline 
WA_MAAPV_STR-ATTYP sy-vline 
WA_MAAPV_STR-MBRSH sy-vline 
WA_MAAPV_STR-KZGVH sy-vline 
WA_MAAPV_STR-MSTAV sy-vline 
WA_MAAPV_STR-MSTDV sy-vline 
WA_MAAPV_STR-KZWSM sy-vline 
WA_MAAPV_STR-PROFL sy-vline 
WA_MAAPV_STR-MPROF sy-vline 
WA_MAAPV_STR-SATNR sy-vline 
WA_MAAPV_STR-KZKFG sy-vline 
WA_MAAPV_STR-MTPOS_MARA sy-vline 
WA_MAAPV_STR-VAVME sy-vline 
WA_MAAPV_STR-BFLME sy-vline 
WA_MAAPV_STR-PVMSO sy-vline 
WA_MAAPV_STR-SGT_REL sy-vline 
WA_MAAPV_STR-CHML_CMPLNC_RLVNCE_IND sy-vline 
WA_MAAPV_STR-COLOR sy-vline 
WA_MAAPV_STR-SIZE1 sy-vline 
WA_MAAPV_STR-SIZE2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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