ABAP Select data from SAP table /SAPAPO/RMCP7 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/RMCP7 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/RMCP7. 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/RMCP7 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/RMCP7 TYPE STANDARD TABLE OF /SAPAPO/RMCP7,
      WA_/SAPAPO/RMCP7 TYPE /SAPAPO/RMCP7,
      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/RMCP7> TYPE /SAPAPO/RMCP7.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPAPO/RMCP7.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/RMCP7
  INTO TABLE IT_/SAPAPO/RMCP7.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/RMCP7
*  INTO TABLE @DATA(IT_/SAPAPO/RMCP72).
*--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/RMCP7 INDEX 1 INTO DATA(WA_/SAPAPO/RMCP72).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/RMCP7 ASSIGNING </SAPAPO/RMCP7>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/RMCP7>-MANDT = 1.
</SAPAPO/RMCP7>-ERNMR = 1.
</SAPAPO/RMCP7>-ERTYP = 1.
</SAPAPO/RMCP7>-EREST = 1.
</SAPAPO/RMCP7>-SPRAS = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/RMCP7 INTO WA_/SAPAPO/RMCP7.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/RMCP7-ERETX, sy-vline,
  WA_/SAPAPO/RMCP7-ETXNR, sy-vline,
  WA_/SAPAPO/RMCP7-ERPOS, sy-vline,
  WA_/SAPAPO/RMCP7-PERKZ, sy-vline,
  WA_/SAPAPO/RMCP7-PERIV, sy-vline,
  WA_/SAPAPO/RMCP7-ANZEP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/RMCP7 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/RMCP7 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/RMCP7 INTO WA_/SAPAPO/RMCP7.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/RMCP7-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/RMCP7-SPRAS.
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/RMCP7_STR, 
MANDT TYPE STRING,
ERNMR TYPE STRING,
ERTYP TYPE STRING,
EREST TYPE STRING,
SPRAS TYPE STRING,
ERETX TYPE STRING,
ETXNR TYPE STRING,
ERPOS TYPE STRING,
PERKZ TYPE STRING,
PERIV TYPE STRING,
ANZEP TYPE STRING,
OPERA TYPE STRING,
ERVAL TYPE STRING,
PLOBJ TYPE STRING,
RELDA TYPE STRING,
VRSIO TYPE STRING,
SSOUR TYPE STRING,
RELST TYPE STRING,
REVLU TYPE STRING,
MCINF TYPE STRING,
GSTRU TYPE STRING,
RFERE TYPE STRING,
RELTX TYPE STRING,
ETXN1 TYPE STRING,
AWAHL TYPE STRING,
AWAH1 TYPE STRING,
AWAH2 TYPE STRING,
ETXTY TYPE STRING,
STATX TYPE STRING,
PERIO TYPE STRING,
WERTR TYPE STRING,
WERTD TYPE STRING,
WERTA TYPE STRING,
EPLMI TYPE STRING,
PROZ1 TYPE STRING,
PROZ2 TYPE STRING,
EPLUS TYPE STRING,
EMINU TYPE STRING,
REFER TYPE STRING,
FTEXT TYPE STRING,
VETXT TYPE STRING,
VUNAM TYPE STRING,
VUDAT TYPE STRING,
ERSTA TYPE STRING,
ERSTI TYPE STRING,
ERTYA TYPE STRING,
ERTYR TYPE STRING,
ERTYB TYPE STRING,
ZEILE TYPE STRING,
DESCR TYPE STRING,
CDAT TYPE STRING,
CTIME TYPE STRING,
AUTOR TYPE STRING,
UDAT TYPE STRING,
UPNAM TYPE STRING,
UTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/RMCP7_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/RMCP7_STR-MANDT sy-vline 
WA_/SAPAPO/RMCP7_STR-ERNMR sy-vline 
WA_/SAPAPO/RMCP7_STR-ERTYP sy-vline 
WA_/SAPAPO/RMCP7_STR-EREST sy-vline 
WA_/SAPAPO/RMCP7_STR-SPRAS sy-vline 
WA_/SAPAPO/RMCP7_STR-ERETX sy-vline 
WA_/SAPAPO/RMCP7_STR-ETXNR sy-vline 
WA_/SAPAPO/RMCP7_STR-ERPOS sy-vline 
WA_/SAPAPO/RMCP7_STR-PERKZ sy-vline 
WA_/SAPAPO/RMCP7_STR-PERIV sy-vline 
WA_/SAPAPO/RMCP7_STR-ANZEP sy-vline 
WA_/SAPAPO/RMCP7_STR-OPERA sy-vline 
WA_/SAPAPO/RMCP7_STR-ERVAL sy-vline 
WA_/SAPAPO/RMCP7_STR-PLOBJ sy-vline 
WA_/SAPAPO/RMCP7_STR-RELDA sy-vline 
WA_/SAPAPO/RMCP7_STR-VRSIO sy-vline 
WA_/SAPAPO/RMCP7_STR-SSOUR sy-vline 
WA_/SAPAPO/RMCP7_STR-RELST sy-vline 
WA_/SAPAPO/RMCP7_STR-REVLU sy-vline 
WA_/SAPAPO/RMCP7_STR-MCINF sy-vline 
WA_/SAPAPO/RMCP7_STR-GSTRU sy-vline 
WA_/SAPAPO/RMCP7_STR-RFERE sy-vline 
WA_/SAPAPO/RMCP7_STR-RELTX sy-vline 
WA_/SAPAPO/RMCP7_STR-ETXN1 sy-vline 
WA_/SAPAPO/RMCP7_STR-AWAHL sy-vline 
WA_/SAPAPO/RMCP7_STR-AWAH1 sy-vline 
WA_/SAPAPO/RMCP7_STR-AWAH2 sy-vline 
WA_/SAPAPO/RMCP7_STR-ETXTY sy-vline 
WA_/SAPAPO/RMCP7_STR-STATX sy-vline 
WA_/SAPAPO/RMCP7_STR-PERIO sy-vline 
WA_/SAPAPO/RMCP7_STR-WERTR sy-vline 
WA_/SAPAPO/RMCP7_STR-WERTD sy-vline 
WA_/SAPAPO/RMCP7_STR-WERTA sy-vline 
WA_/SAPAPO/RMCP7_STR-EPLMI sy-vline 
WA_/SAPAPO/RMCP7_STR-PROZ1 sy-vline 
WA_/SAPAPO/RMCP7_STR-PROZ2 sy-vline 
WA_/SAPAPO/RMCP7_STR-EPLUS sy-vline 
WA_/SAPAPO/RMCP7_STR-EMINU sy-vline 
WA_/SAPAPO/RMCP7_STR-REFER sy-vline 
WA_/SAPAPO/RMCP7_STR-FTEXT sy-vline 
WA_/SAPAPO/RMCP7_STR-VETXT sy-vline 
WA_/SAPAPO/RMCP7_STR-VUNAM sy-vline 
WA_/SAPAPO/RMCP7_STR-VUDAT sy-vline 
WA_/SAPAPO/RMCP7_STR-ERSTA sy-vline 
WA_/SAPAPO/RMCP7_STR-ERSTI sy-vline 
WA_/SAPAPO/RMCP7_STR-ERTYA sy-vline 
WA_/SAPAPO/RMCP7_STR-ERTYR sy-vline 
WA_/SAPAPO/RMCP7_STR-ERTYB sy-vline 
WA_/SAPAPO/RMCP7_STR-ZEILE sy-vline 
WA_/SAPAPO/RMCP7_STR-DESCR sy-vline 
WA_/SAPAPO/RMCP7_STR-CDAT sy-vline 
WA_/SAPAPO/RMCP7_STR-CTIME sy-vline 
WA_/SAPAPO/RMCP7_STR-AUTOR sy-vline 
WA_/SAPAPO/RMCP7_STR-UDAT sy-vline 
WA_/SAPAPO/RMCP7_STR-UPNAM sy-vline 
WA_/SAPAPO/RMCP7_STR-UTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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