ABAP Select data from SAP table /SAPAPO/MCP6_PLVLI 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_PLVLI 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_PLVLI. 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_PLVLI 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_PLVLI TYPE STANDARD TABLE OF /SAPAPO/MCP6_PLVLI,
      WA_/SAPAPO/MCP6_PLVLI TYPE /SAPAPO/MCP6_PLVLI,
      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_PLVLI> TYPE /SAPAPO/MCP6_PLVLI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPAPO/MCP6_PLVLI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/MCP6_PLVLI
  INTO TABLE IT_/SAPAPO/MCP6_PLVLI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/MCP6_PLVLI
*  INTO TABLE @DATA(IT_/SAPAPO/MCP6_PLVLI2).
*--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_PLVLI INDEX 1 INTO DATA(WA_/SAPAPO/MCP6_PLVLI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/MCP6_PLVLI ASSIGNING </SAPAPO/MCP6_PLVLI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/MCP6_PLVLI>-READONLY = 1.
</SAPAPO/MCP6_PLVLI>-ROW_WIDTH = 1.
</SAPAPO/MCP6_PLVLI>-ROW_HEIGHT = 1.
</SAPAPO/MCP6_PLVLI>-RELIEF = 1.
</SAPAPO/MCP6_PLVLI>-ROW_BG = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/MCP6_PLVLI INTO WA_/SAPAPO/MCP6_PLVLI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/MCP6_PLVLI-ROW_FG, sy-vline,
  WA_/SAPAPO/MCP6_PLVLI-ROW_HIDDEN, sy-vline,
  WA_/SAPAPO/MCP6_PLVLI-ROW_TEXT, sy-vline,
  WA_/SAPAPO/MCP6_PLVLI-ROW_ALIGN, sy-vline,
  WA_/SAPAPO/MCP6_PLVLI-ROW_FORMAT, sy-vline,
  WA_/SAPAPO/MCP6_PLVLI-BITMAP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/MCP6_PLVLI 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_PLVLI 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_PLVLI INTO WA_/SAPAPO/MCP6_PLVLI.


*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.
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_PLVLI_STR, 
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,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/MCP6_PLVLI_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_PLVLI_STR-READONLY sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-ROW_WIDTH sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-ROW_HEIGHT sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-RELIEF sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-ROW_BG sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-ROW_FG sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-ROW_HIDDEN sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-ROW_TEXT sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-ROW_ALIGN sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-ROW_FORMAT sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-BITMAP sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-BMP_ALIGN sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-ROW_FONT sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-SHOW_CHART sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-CHART_TYPE sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-FLG_BY_RGB sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-COLOR_R sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-COLOR_G sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-COLOR_B sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-ROW_MARKED sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-CHART_ID sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-GRID_ID sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-WORK_STATUS sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-CONTENTS sy-vline 
WA_/SAPAPO/MCP6_PLVLI_STR-ICON_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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