ABAP Select data from SAP table P08_MMR297 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P08_MMR297 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 P08_MMR297. 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 P08_MMR297 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_P08_MMR297 TYPE STANDARD TABLE OF P08_MMR297,
      WA_P08_MMR297 TYPE P08_MMR297,
      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: <P08_MMR297> TYPE P08_MMR297.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P08_MMR297.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P08_MMR297
  INTO TABLE IT_P08_MMR297.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P08_MMR297
*  INTO TABLE @DATA(IT_P08_MMR2972).
*--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_P08_MMR297 INDEX 1 INTO DATA(WA_P08_MMR2972).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P08_MMR297 ASSIGNING <P08_MMR297>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P08_MMR297>-ID2 = 1.
<P08_MMR297>-PERNR = 1.
<P08_MMR297>-SURNA = 1.
<P08_MMR297>-FIRNA = 1.
<P08_MMR297>-SECNA = 1.

ENDLOOP.

LOOP AT IT_P08_MMR297 INTO WA_P08_MMR297.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P08_MMR297-DOB, sy-vline,
  WA_P08_MMR297-GENDR, sy-vline,
  WA_P08_MMR297-ADDR1, sy-vline,
  WA_P08_MMR297-ADDR2, sy-vline,
  WA_P08_MMR297-ADDR3, sy-vline,
  WA_P08_MMR297-ADDR4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P08_MMR297 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_P08_MMR297 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_P08_MMR297 INTO WA_P08_MMR297.


*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_P08_MMR297_STR, 
ID2 TYPE STRING,
PERNR TYPE STRING,
SURNA TYPE STRING,
FIRNA TYPE STRING,
SECNA TYPE STRING,
DOB TYPE STRING,
GENDR TYPE STRING,
ADDR1 TYPE STRING,
ADDR2 TYPE STRING,
ADDR3 TYPE STRING,
ADDR4 TYPE STRING,
PCODE TYPE STRING,
TXCOD TYPE STRING,
W1M1 TYPE STRING,
NINUM TYPE STRING,
SCON1 TYPE STRING,
NCAT1 TYPE STRING,
NIPY1 TYPE STRING,
NTOT1 TYPE STRING,
EECO1 TYPE STRING,
COPY1 TYPE STRING,
COCO1 TYPE STRING,
SSP TYPE STRING,
SMP TYPE STRING,
SP9 TYPE STRING,
GROSS TYPE STRING,
TAX TYPE STRING,
TXREF TYPE STRING,
PREPY TYPE STRING,
PRETX TYPE STRING,
HIRE TYPE STRING,
FIRE TYPE STRING,
SUPER TYPE STRING,
SUREF TYPE STRING,
LIFE TYPE STRING,
WKID TYPE STRING,
TXPAY TYPE STRING,
PENID TYPE STRING,
DIRID TYPE STRING,
SCON2 TYPE STRING,
NCAT2 TYPE STRING,
NIPY2 TYPE STRING,
NTOT2 TYPE STRING,
EECO2 TYPE STRING,
COPY2 TYPE STRING,
COCO2 TYPE STRING,
SCON3 TYPE STRING,
NCAT3 TYPE STRING,
NIPY3 TYPE STRING,
NTOT3 TYPE STRING,
EECO3 TYPE STRING,
COPY3 TYPE STRING,
COCO3 TYPE STRING,
SCON4 TYPE STRING,
NCAT4 TYPE STRING,
NIPY4 TYPE STRING,
NTOT4 TYPE STRING,
EECO4 TYPE STRING,
COPY4 TYPE STRING,
COCO4 TYPE STRING,
NOTE1 TYPE STRING,
NOTE2 TYPE STRING,
NOTE3 TYPE STRING,
SP23 TYPE STRING,
CTRL2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P08_MMR297_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_P08_MMR297_STR-ID2 sy-vline 
WA_P08_MMR297_STR-PERNR sy-vline 
WA_P08_MMR297_STR-SURNA sy-vline 
WA_P08_MMR297_STR-FIRNA sy-vline 
WA_P08_MMR297_STR-SECNA sy-vline 
WA_P08_MMR297_STR-DOB sy-vline 
WA_P08_MMR297_STR-GENDR sy-vline 
WA_P08_MMR297_STR-ADDR1 sy-vline 
WA_P08_MMR297_STR-ADDR2 sy-vline 
WA_P08_MMR297_STR-ADDR3 sy-vline 
WA_P08_MMR297_STR-ADDR4 sy-vline 
WA_P08_MMR297_STR-PCODE sy-vline 
WA_P08_MMR297_STR-TXCOD sy-vline 
WA_P08_MMR297_STR-W1M1 sy-vline 
WA_P08_MMR297_STR-NINUM sy-vline 
WA_P08_MMR297_STR-SCON1 sy-vline 
WA_P08_MMR297_STR-NCAT1 sy-vline 
WA_P08_MMR297_STR-NIPY1 sy-vline 
WA_P08_MMR297_STR-NTOT1 sy-vline 
WA_P08_MMR297_STR-EECO1 sy-vline 
WA_P08_MMR297_STR-COPY1 sy-vline 
WA_P08_MMR297_STR-COCO1 sy-vline 
WA_P08_MMR297_STR-SSP sy-vline 
WA_P08_MMR297_STR-SMP sy-vline 
WA_P08_MMR297_STR-SP9 sy-vline 
WA_P08_MMR297_STR-GROSS sy-vline 
WA_P08_MMR297_STR-TAX sy-vline 
WA_P08_MMR297_STR-TXREF sy-vline 
WA_P08_MMR297_STR-PREPY sy-vline 
WA_P08_MMR297_STR-PRETX sy-vline 
WA_P08_MMR297_STR-HIRE sy-vline 
WA_P08_MMR297_STR-FIRE sy-vline 
WA_P08_MMR297_STR-SUPER sy-vline 
WA_P08_MMR297_STR-SUREF sy-vline 
WA_P08_MMR297_STR-LIFE sy-vline 
WA_P08_MMR297_STR-WKID sy-vline 
WA_P08_MMR297_STR-TXPAY sy-vline 
WA_P08_MMR297_STR-PENID sy-vline 
WA_P08_MMR297_STR-DIRID sy-vline 
WA_P08_MMR297_STR-SCON2 sy-vline 
WA_P08_MMR297_STR-NCAT2 sy-vline 
WA_P08_MMR297_STR-NIPY2 sy-vline 
WA_P08_MMR297_STR-NTOT2 sy-vline 
WA_P08_MMR297_STR-EECO2 sy-vline 
WA_P08_MMR297_STR-COPY2 sy-vline 
WA_P08_MMR297_STR-COCO2 sy-vline 
WA_P08_MMR297_STR-SCON3 sy-vline 
WA_P08_MMR297_STR-NCAT3 sy-vline 
WA_P08_MMR297_STR-NIPY3 sy-vline 
WA_P08_MMR297_STR-NTOT3 sy-vline 
WA_P08_MMR297_STR-EECO3 sy-vline 
WA_P08_MMR297_STR-COPY3 sy-vline 
WA_P08_MMR297_STR-COCO3 sy-vline 
WA_P08_MMR297_STR-SCON4 sy-vline 
WA_P08_MMR297_STR-NCAT4 sy-vline 
WA_P08_MMR297_STR-NIPY4 sy-vline 
WA_P08_MMR297_STR-NTOT4 sy-vline 
WA_P08_MMR297_STR-EECO4 sy-vline 
WA_P08_MMR297_STR-COPY4 sy-vline 
WA_P08_MMR297_STR-COCO4 sy-vline 
WA_P08_MMR297_STR-NOTE1 sy-vline 
WA_P08_MMR297_STR-NOTE2 sy-vline 
WA_P08_MMR297_STR-NOTE3 sy-vline 
WA_P08_MMR297_STR-SP23 sy-vline 
WA_P08_MMR297_STR-CTRL2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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