ABAP Select data from SAP table MAPR_PRC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MAPR_PRC
*  INTO TABLE @DATA(IT_MAPR_PRC2).
*--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_MAPR_PRC INDEX 1 INTO DATA(WA_MAPR_PRC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MAPR_PRC>-CLIENT = 1.
<MAPR_PRC>-PROCESS_ID = 1.
<MAPR_PRC>-PROCESS_STEP_NO = 1.
<MAPR_PRC>-SOURCE_SYSTEM = 1.
<MAPR_PRC>-SOURCE_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MAPR_PRC-WERKS, sy-vline,
  WA_MAPR_PRC-PNUM1, sy-vline,
  WA_MAPR_PRC-PERKZ, sy-vline,
  WA_MAPR_PRC-PERIV, sy-vline,
  WA_MAPR_PRC-DATUM, sy-vline,
  WA_MAPR_PRC-UZEIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MAPR_PRC 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_MAPR_PRC 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_MAPR_PRC INTO WA_MAPR_PRC.


*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_MAPR_PRC_STR, 
CLIENT TYPE STRING,
PROCESS_ID TYPE STRING,
PROCESS_STEP_NO TYPE STRING,
SOURCE_SYSTEM TYPE STRING,
SOURCE_ID TYPE STRING,
WERKS TYPE STRING,
PNUM1 TYPE STRING,
PERKZ TYPE STRING,
PERIV TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
PNUM2 TYPE STRING,
PROPR TYPE STRING,
MODAW TYPE STRING,
MODAV TYPE STRING,
KZPAR TYPE STRING,
OPGRA TYPE STRING,
KZINI TYPE STRING,
PRMOD TYPE STRING,
ALPHA TYPE STRING,
BETA1 TYPE STRING,
GAMMA TYPE STRING,
DELTA TYPE STRING,
EPSIL TYPE STRING,
SIGGR TYPE STRING,
PRDAT TYPE STRING,
PERAN TYPE STRING,
PERIN TYPE STRING,
PERIO TYPE STRING,
PEREX TYPE STRING,
ANZPR TYPE STRING,
FIMON TYPE STRING,
GWERT TYPE STRING,
GWER1 TYPE STRING,
GWER2 TYPE STRING,
VMGWE TYPE STRING,
VMGW1 TYPE STRING,
VMGW2 TYPE STRING,
TWERT TYPE STRING,
VMTWE TYPE STRING,
PRMAD TYPE STRING,
VMMAD TYPE STRING,
FSUMM TYPE STRING,
VMFSU TYPE STRING,
GEWGR TYPE STRING,
THKOF TYPE STRING,
AUSNA TYPE STRING,
PROAB TYPE STRING,
VBKEZ TYPE STRING,
STATU TYPE STRING,
VETXT TYPE STRING,
PRWUG TYPE STRING,
PRWOG TYPE STRING,
PRROS TYPE STRING,
PRKUM TYPE STRING,
PRZGF TYPE STRING,
AKTPE TYPE STRING,
FAUSR TYPE STRING,
SIGMA TYPE STRING,
FLGEXC TYPE STRING,
FLGCOR TYPE STRING,
SOURCE_RECENCY TYPE STRING,
SOURCE_MODIFIED TYPE STRING,
SOURCE_MODIFICATION_BLIP TYPE STRING,
SOURCE_INDEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MAPR_PRC_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_MAPR_PRC_STR-CLIENT sy-vline 
WA_MAPR_PRC_STR-PROCESS_ID sy-vline 
WA_MAPR_PRC_STR-PROCESS_STEP_NO sy-vline 
WA_MAPR_PRC_STR-SOURCE_SYSTEM sy-vline 
WA_MAPR_PRC_STR-SOURCE_ID sy-vline 
WA_MAPR_PRC_STR-WERKS sy-vline 
WA_MAPR_PRC_STR-PNUM1 sy-vline 
WA_MAPR_PRC_STR-PERKZ sy-vline 
WA_MAPR_PRC_STR-PERIV sy-vline 
WA_MAPR_PRC_STR-DATUM sy-vline 
WA_MAPR_PRC_STR-UZEIT sy-vline 
WA_MAPR_PRC_STR-PNUM2 sy-vline 
WA_MAPR_PRC_STR-PROPR sy-vline 
WA_MAPR_PRC_STR-MODAW sy-vline 
WA_MAPR_PRC_STR-MODAV sy-vline 
WA_MAPR_PRC_STR-KZPAR sy-vline 
WA_MAPR_PRC_STR-OPGRA sy-vline 
WA_MAPR_PRC_STR-KZINI sy-vline 
WA_MAPR_PRC_STR-PRMOD sy-vline 
WA_MAPR_PRC_STR-ALPHA sy-vline 
WA_MAPR_PRC_STR-BETA1 sy-vline 
WA_MAPR_PRC_STR-GAMMA sy-vline 
WA_MAPR_PRC_STR-DELTA sy-vline 
WA_MAPR_PRC_STR-EPSIL sy-vline 
WA_MAPR_PRC_STR-SIGGR sy-vline 
WA_MAPR_PRC_STR-PRDAT sy-vline 
WA_MAPR_PRC_STR-PERAN sy-vline 
WA_MAPR_PRC_STR-PERIN sy-vline 
WA_MAPR_PRC_STR-PERIO sy-vline 
WA_MAPR_PRC_STR-PEREX sy-vline 
WA_MAPR_PRC_STR-ANZPR sy-vline 
WA_MAPR_PRC_STR-FIMON sy-vline 
WA_MAPR_PRC_STR-GWERT sy-vline 
WA_MAPR_PRC_STR-GWER1 sy-vline 
WA_MAPR_PRC_STR-GWER2 sy-vline 
WA_MAPR_PRC_STR-VMGWE sy-vline 
WA_MAPR_PRC_STR-VMGW1 sy-vline 
WA_MAPR_PRC_STR-VMGW2 sy-vline 
WA_MAPR_PRC_STR-TWERT sy-vline 
WA_MAPR_PRC_STR-VMTWE sy-vline 
WA_MAPR_PRC_STR-PRMAD sy-vline 
WA_MAPR_PRC_STR-VMMAD sy-vline 
WA_MAPR_PRC_STR-FSUMM sy-vline 
WA_MAPR_PRC_STR-VMFSU sy-vline 
WA_MAPR_PRC_STR-GEWGR sy-vline 
WA_MAPR_PRC_STR-THKOF sy-vline 
WA_MAPR_PRC_STR-AUSNA sy-vline 
WA_MAPR_PRC_STR-PROAB sy-vline 
WA_MAPR_PRC_STR-VBKEZ sy-vline 
WA_MAPR_PRC_STR-STATU sy-vline 
WA_MAPR_PRC_STR-VETXT sy-vline 
WA_MAPR_PRC_STR-PRWUG sy-vline 
WA_MAPR_PRC_STR-PRWOG sy-vline 
WA_MAPR_PRC_STR-PRROS sy-vline 
WA_MAPR_PRC_STR-PRKUM sy-vline 
WA_MAPR_PRC_STR-PRZGF sy-vline 
WA_MAPR_PRC_STR-AKTPE sy-vline 
WA_MAPR_PRC_STR-FAUSR sy-vline 
WA_MAPR_PRC_STR-SIGMA sy-vline 
WA_MAPR_PRC_STR-FLGEXC sy-vline 
WA_MAPR_PRC_STR-FLGCOR sy-vline 
WA_MAPR_PRC_STR-SOURCE_RECENCY sy-vline 
WA_MAPR_PRC_STR-SOURCE_MODIFIED sy-vline 
WA_MAPR_PRC_STR-SOURCE_MODIFICATION_BLIP sy-vline 
WA_MAPR_PRC_STR-SOURCE_INDEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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