ABAP Select data from SAP table /SAPAPO/MCP6_LI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/MCP6_LI 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 /SAPAPO/MCP6_LI. 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 /SAPAPO/MCP6_LI 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_/SAPAPO/MCP6_LI TYPE STANDARD TABLE OF /SAPAPO/MCP6_LI,
      WA_/SAPAPO/MCP6_LI TYPE /SAPAPO/MCP6_LI,
      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: </SAPAPO/MCP6_LI> TYPE /SAPAPO/MCP6_LI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPAPO/MCP6_LI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/MCP6_LI
  INTO TABLE IT_/SAPAPO/MCP6_LI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/MCP6_LI
*  INTO TABLE @DATA(IT_/SAPAPO/MCP6_LI2).
*--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_/SAPAPO/MCP6_LI INDEX 1 INTO DATA(WA_/SAPAPO/MCP6_LI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/MCP6_LI ASSIGNING </SAPAPO/MCP6_LI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/MCP6_LI>-BLOCKID = 1.
</SAPAPO/MCP6_LI>-GRIDNR = 1.
</SAPAPO/MCP6_LI>-LINE = 1.
</SAPAPO/MCP6_LI>-LINETYPE = 1.
</SAPAPO/MCP6_LI>-KRIT1 = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/MCP6_LI INTO WA_/SAPAPO/MCP6_LI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/MCP6_LI-FNAME, sy-vline,
  WA_/SAPAPO/MCP6_LI-TABHK, sy-vline,
  WA_/SAPAPO/MCP6_LI-FELDH, sy-vline,
  WA_/SAPAPO/MCP6_LI-ZPOS, sy-vline,
  WA_/SAPAPO/MCP6_LI-LINKZ, sy-vline,
  WA_/SAPAPO/MCP6_LI-INFUN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/MCP6_LI 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_/SAPAPO/MCP6_LI 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_/SAPAPO/MCP6_LI INTO WA_/SAPAPO/MCP6_LI.


*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 VRSIO, internal->external for field VRSIOID
CALL FUNCTION 'CONVERSION_EXIT_VRSIO_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/MCP6_LI-VRSIOID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/MCP6_LI-VRSIOID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/MCP6_LI-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/MCP6_LI-UNIT.
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_/SAPAPO/MCP6_LI_STR, 
BLOCKID TYPE STRING,
GRIDNR TYPE STRING,
LINE TYPE STRING,
LINETYPE TYPE STRING,
KRIT1 TYPE STRING,
FNAME TYPE STRING,
TABHK TYPE STRING,
FELDH TYPE STRING,
ZPOS TYPE STRING,
LINKZ TYPE STRING,
INFUN TYPE STRING,
OUFUN TYPE STRING,
VGFUN TYPE STRING,
FLGIS TYPE STRING,
FLGEV TYPE STRING,
FLGFC TYPE STRING,
FLGVI TYPE STRING,
FLGAS TYPE STRING,
FLGDS TYPE STRING,
FLGDZ TYPE STRING,
FLG_DETAIL TYPE STRING,
FLG_ANTEIL_LINE TYPE STRING,
NKFIX TYPE STRING,
ANZNK TYPE STRING,
DDICT TYPE STRING,
FREET TYPE STRING,
PLOBT TYPE STRING,
LTEXT TYPE STRING,
PFIELD TYPE STRING,
DOMNAME TYPE STRING,
PMATF TYPE STRING,
RETYP TYPE STRING,
RELEN TYPE STRING,
BASRE TYPE STRING,
STRUL TYPE STRING,
OBLIG TYPE STRING,
INPUT TYPE STRING,
OUTPUT TYPE STRING,
INTENS TYPE STRING,
HIDDEN TYPE STRING,
LENGTH TYPE STRING,
AWAHL TYPE STRING,
FLGPG TYPE STRING,
ELINE TYPE STRING,
EFNAME TYPE STRING,
KAPALI TYPE STRING,
MARKED TYPE STRING,
READONLY TYPE STRING,
ROW_WIDTH TYPE STRING,
ROW_HEIGHT TYPE STRING,
RELIEF TYPE STRING,
ROW_BG TYPE STRING,
ROW_FG TYPE STRING,
ROW_HIDDEN TYPE STRING,
ROW_TEXT TYPE STRING,
ROW_ALIGN TYPE STRING,
ROW_FORMAT TYPE STRING,
BITMAP TYPE STRING,
BMP_ALIGN TYPE STRING,
ROW_FONT TYPE STRING,
SHOW_CHART TYPE STRING,
CHART_TYPE TYPE STRING,
FLG_BY_RGB TYPE STRING,
COLOR_R TYPE STRING,
COLOR_G TYPE STRING,
COLOR_B TYPE STRING,
ROW_MARKED TYPE STRING,
CHART_ID TYPE STRING,
GRID_ID TYPE STRING,
WORK_STATUS TYPE STRING,
CONTENTS TYPE STRING,
ICON_NAME TYPE STRING,
FLG_BWREQ TYPE STRING,
VRSIOID TYPE STRING,
KEYF_SAV TYPE STRING,
UNIT TYPE STRING,
CURR TYPE STRING,
FIX_ZEROS TYPE STRING,
CALC_INIT_FLAGS TYPE STRING,
NEG_NOT_ALLOWED TYPE STRING,
KEYFIGURE_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/MCP6_LI_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_/SAPAPO/MCP6_LI_STR-BLOCKID sy-vline 
WA_/SAPAPO/MCP6_LI_STR-GRIDNR sy-vline 
WA_/SAPAPO/MCP6_LI_STR-LINE sy-vline 
WA_/SAPAPO/MCP6_LI_STR-LINETYPE sy-vline 
WA_/SAPAPO/MCP6_LI_STR-KRIT1 sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FNAME sy-vline 
WA_/SAPAPO/MCP6_LI_STR-TABHK sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FELDH sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ZPOS sy-vline 
WA_/SAPAPO/MCP6_LI_STR-LINKZ sy-vline 
WA_/SAPAPO/MCP6_LI_STR-INFUN sy-vline 
WA_/SAPAPO/MCP6_LI_STR-OUFUN sy-vline 
WA_/SAPAPO/MCP6_LI_STR-VGFUN sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLGIS sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLGEV sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLGFC sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLGVI sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLGAS sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLGDS sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLGDZ sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLG_DETAIL sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLG_ANTEIL_LINE sy-vline 
WA_/SAPAPO/MCP6_LI_STR-NKFIX sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ANZNK sy-vline 
WA_/SAPAPO/MCP6_LI_STR-DDICT sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FREET sy-vline 
WA_/SAPAPO/MCP6_LI_STR-PLOBT sy-vline 
WA_/SAPAPO/MCP6_LI_STR-LTEXT sy-vline 
WA_/SAPAPO/MCP6_LI_STR-PFIELD sy-vline 
WA_/SAPAPO/MCP6_LI_STR-DOMNAME sy-vline 
WA_/SAPAPO/MCP6_LI_STR-PMATF sy-vline 
WA_/SAPAPO/MCP6_LI_STR-RETYP sy-vline 
WA_/SAPAPO/MCP6_LI_STR-RELEN sy-vline 
WA_/SAPAPO/MCP6_LI_STR-BASRE sy-vline 
WA_/SAPAPO/MCP6_LI_STR-STRUL sy-vline 
WA_/SAPAPO/MCP6_LI_STR-OBLIG sy-vline 
WA_/SAPAPO/MCP6_LI_STR-INPUT sy-vline 
WA_/SAPAPO/MCP6_LI_STR-OUTPUT sy-vline 
WA_/SAPAPO/MCP6_LI_STR-INTENS sy-vline 
WA_/SAPAPO/MCP6_LI_STR-HIDDEN sy-vline 
WA_/SAPAPO/MCP6_LI_STR-LENGTH sy-vline 
WA_/SAPAPO/MCP6_LI_STR-AWAHL sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLGPG sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ELINE sy-vline 
WA_/SAPAPO/MCP6_LI_STR-EFNAME sy-vline 
WA_/SAPAPO/MCP6_LI_STR-KAPALI sy-vline 
WA_/SAPAPO/MCP6_LI_STR-MARKED sy-vline 
WA_/SAPAPO/MCP6_LI_STR-READONLY sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ROW_WIDTH sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ROW_HEIGHT sy-vline 
WA_/SAPAPO/MCP6_LI_STR-RELIEF sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ROW_BG sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ROW_FG sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ROW_HIDDEN sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ROW_TEXT sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ROW_ALIGN sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ROW_FORMAT sy-vline 
WA_/SAPAPO/MCP6_LI_STR-BITMAP sy-vline 
WA_/SAPAPO/MCP6_LI_STR-BMP_ALIGN sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ROW_FONT sy-vline 
WA_/SAPAPO/MCP6_LI_STR-SHOW_CHART sy-vline 
WA_/SAPAPO/MCP6_LI_STR-CHART_TYPE sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLG_BY_RGB sy-vline 
WA_/SAPAPO/MCP6_LI_STR-COLOR_R sy-vline 
WA_/SAPAPO/MCP6_LI_STR-COLOR_G sy-vline 
WA_/SAPAPO/MCP6_LI_STR-COLOR_B sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ROW_MARKED sy-vline 
WA_/SAPAPO/MCP6_LI_STR-CHART_ID sy-vline 
WA_/SAPAPO/MCP6_LI_STR-GRID_ID sy-vline 
WA_/SAPAPO/MCP6_LI_STR-WORK_STATUS sy-vline 
WA_/SAPAPO/MCP6_LI_STR-CONTENTS sy-vline 
WA_/SAPAPO/MCP6_LI_STR-ICON_NAME sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FLG_BWREQ sy-vline 
WA_/SAPAPO/MCP6_LI_STR-VRSIOID sy-vline 
WA_/SAPAPO/MCP6_LI_STR-KEYF_SAV sy-vline 
WA_/SAPAPO/MCP6_LI_STR-UNIT sy-vline 
WA_/SAPAPO/MCP6_LI_STR-CURR sy-vline 
WA_/SAPAPO/MCP6_LI_STR-FIX_ZEROS sy-vline 
WA_/SAPAPO/MCP6_LI_STR-CALC_INIT_FLAGS sy-vline 
WA_/SAPAPO/MCP6_LI_STR-NEG_NOT_ALLOWED sy-vline 
WA_/SAPAPO/MCP6_LI_STR-KEYFIGURE_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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