ABAP Select data from SAP table TMPPF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TMPPF
*  INTO TABLE @DATA(IT_TMPPF2).
*--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_TMPPF INDEX 1 INTO DATA(WA_TMPPF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TMPPF>-MANDT = 1.
<TMPPF>-MPROF = 1.
<TMPPF>-MPNPF = 1.
<TMPPF>-MPNCH = 1.
<TMPPF>-MPINF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TMPPF-MPQIN, sy-vline,
  WA_TMPPF-MPPRI, sy-vline,
  WA_TMPPF-MPAMP, sy-vline,
  WA_TMPPF-MPLIS, sy-vline,
  WA_TMPPF-MPBTX, sy-vline,
  WA_TMPPF-MPREV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TMPPF 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_TMPPF 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_TMPPF INTO WA_TMPPF.


*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_TMPPF_STR, 
MANDT TYPE STRING,
MPROF TYPE STRING,
MPNPF TYPE STRING,
MPNCH TYPE STRING,
MPINF TYPE STRING,
MPQIN TYPE STRING,
MPPRI TYPE STRING,
MPAMP TYPE STRING,
MPLIS TYPE STRING,
MPBTX TYPE STRING,
MPREV TYPE STRING,
CKAMP TYPE STRING,
NWQUOT TYPE STRING,
MPNIM TYPE STRING,
RESFFF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TMPPF_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_TMPPF_STR-MANDT sy-vline 
WA_TMPPF_STR-MPROF sy-vline 
WA_TMPPF_STR-MPNPF sy-vline 
WA_TMPPF_STR-MPNCH sy-vline 
WA_TMPPF_STR-MPINF sy-vline 
WA_TMPPF_STR-MPQIN sy-vline 
WA_TMPPF_STR-MPPRI sy-vline 
WA_TMPPF_STR-MPAMP sy-vline 
WA_TMPPF_STR-MPLIS sy-vline 
WA_TMPPF_STR-MPBTX sy-vline 
WA_TMPPF_STR-MPREV sy-vline 
WA_TMPPF_STR-CKAMP sy-vline 
WA_TMPPF_STR-NWQUOT sy-vline 
WA_TMPPF_STR-MPNIM sy-vline 
WA_TMPPF_STR-RESFFF sy-vline      INTO ld_text SEPARATED BY SPACE.

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