ABAP Select data from SAP table DTFIAP_2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DTFIAP_2 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 DTFIAP_2. 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 DTFIAP_2 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_DTFIAP_2 TYPE STANDARD TABLE OF DTFIAP_2,
      WA_DTFIAP_2 TYPE DTFIAP_2,
      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: <DTFIAP_2> TYPE DTFIAP_2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DTFIAP_2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DTFIAP_2
  INTO TABLE IT_DTFIAP_2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DTFIAP_2
*  INTO TABLE @DATA(IT_DTFIAP_22).
*--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_DTFIAP_2 INDEX 1 INTO DATA(WA_DTFIAP_22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DTFIAP_2 ASSIGNING <DTFIAP_2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DTFIAP_2>-DOCSEL_BIW = 1.
<DTFIAP_2>-LIFNR = 1.
<DTFIAP_2>-BUKRS = 1.
<DTFIAP_2>-GSBER = 1.
<DTFIAP_2>-MABER = 1.

ENDLOOP.

LOOP AT IT_DTFIAP_2 INTO WA_DTFIAP_2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DTFIAP_2-KTOPL, sy-vline,
  WA_DTFIAP_2-HKONT, sy-vline,
  WA_DTFIAP_2-KOART, sy-vline,
  WA_DTFIAP_2-UMSKZ, sy-vline,
  WA_DTFIAP_2-BLART, sy-vline,
  WA_DTFIAP_2-BSCHL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DTFIAP_2 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_DTFIAP_2 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_DTFIAP_2 INTO WA_DTFIAP_2.


*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 ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-HKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field FISCPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-FISCPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-FISCPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMSOL
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-DMSOL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-DMSOL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMHAB
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-DMHAB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-DMHAB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DMSHB
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-DMSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-DMSHB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-SKNTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-SKNTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRSOL
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-WRSOL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-WRSOL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRHAB
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-WRHAB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-WRHAB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field WRSHB
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-WRSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-WRSHB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WSKTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-WSKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-WSKTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKFBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_DTFIAP_2-SKFBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DTFIAP_2-SKFBT.
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_DTFIAP_2_STR, 
DOCSEL_BIW TYPE STRING,
LIFNR TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
MABER TYPE STRING,
KTOPL TYPE STRING,
HKONT TYPE STRING,
KOART TYPE STRING,
UMSKZ TYPE STRING,
BLART TYPE STRING,
BSCHL TYPE STRING,
RSTGR TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
XBLNR TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
AUGDT TYPE STRING,
NETDT TYPE STRING,
SK1DT TYPE STRING,
SK2DT TYPE STRING,
ZFBDT TYPE STRING,
ZTERM TYPE STRING,
ZBD1T TYPE STRING,
ZBD2T TYPE STRING,
ZBD3T TYPE STRING,
ZBD1P TYPE STRING,
ZBD2P TYPE STRING,
LAND1 TYPE STRING,
ZLSCH TYPE STRING,
UZAWE TYPE STRING,
ZLSPR TYPE STRING,
MANSP TYPE STRING,
MSCHL TYPE STRING,
MADAT TYPE STRING,
MANST TYPE STRING,
XNEGP TYPE STRING,
FISCPER TYPE STRING,
FISCVAR TYPE STRING,
LCURR TYPE STRING,
DMSOL TYPE STRING,
DMHAB TYPE STRING,
DMSHB TYPE STRING,
SKNTO TYPE STRING,
WAERS TYPE STRING,
WRSOL TYPE STRING,
WRHAB TYPE STRING,
WRSHB TYPE STRING,
WSKTO TYPE STRING,
SKFBT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DTFIAP_2_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_DTFIAP_2_STR-DOCSEL_BIW sy-vline 
WA_DTFIAP_2_STR-LIFNR sy-vline 
WA_DTFIAP_2_STR-BUKRS sy-vline 
WA_DTFIAP_2_STR-GSBER sy-vline 
WA_DTFIAP_2_STR-MABER sy-vline 
WA_DTFIAP_2_STR-KTOPL sy-vline 
WA_DTFIAP_2_STR-HKONT sy-vline 
WA_DTFIAP_2_STR-KOART sy-vline 
WA_DTFIAP_2_STR-UMSKZ sy-vline 
WA_DTFIAP_2_STR-BLART sy-vline 
WA_DTFIAP_2_STR-BSCHL sy-vline 
WA_DTFIAP_2_STR-RSTGR sy-vline 
WA_DTFIAP_2_STR-BELNR sy-vline 
WA_DTFIAP_2_STR-BUZEI sy-vline 
WA_DTFIAP_2_STR-XBLNR sy-vline 
WA_DTFIAP_2_STR-BUDAT sy-vline 
WA_DTFIAP_2_STR-BLDAT sy-vline 
WA_DTFIAP_2_STR-AUGDT sy-vline 
WA_DTFIAP_2_STR-NETDT sy-vline 
WA_DTFIAP_2_STR-SK1DT sy-vline 
WA_DTFIAP_2_STR-SK2DT sy-vline 
WA_DTFIAP_2_STR-ZFBDT sy-vline 
WA_DTFIAP_2_STR-ZTERM sy-vline 
WA_DTFIAP_2_STR-ZBD1T sy-vline 
WA_DTFIAP_2_STR-ZBD2T sy-vline 
WA_DTFIAP_2_STR-ZBD3T sy-vline 
WA_DTFIAP_2_STR-ZBD1P sy-vline 
WA_DTFIAP_2_STR-ZBD2P sy-vline 
WA_DTFIAP_2_STR-LAND1 sy-vline 
WA_DTFIAP_2_STR-ZLSCH sy-vline 
WA_DTFIAP_2_STR-UZAWE sy-vline 
WA_DTFIAP_2_STR-ZLSPR sy-vline 
WA_DTFIAP_2_STR-MANSP sy-vline 
WA_DTFIAP_2_STR-MSCHL sy-vline 
WA_DTFIAP_2_STR-MADAT sy-vline 
WA_DTFIAP_2_STR-MANST sy-vline 
WA_DTFIAP_2_STR-XNEGP sy-vline 
WA_DTFIAP_2_STR-FISCPER sy-vline 
WA_DTFIAP_2_STR-FISCVAR sy-vline 
WA_DTFIAP_2_STR-LCURR sy-vline 
WA_DTFIAP_2_STR-DMSOL sy-vline 
WA_DTFIAP_2_STR-DMHAB sy-vline 
WA_DTFIAP_2_STR-DMSHB sy-vline 
WA_DTFIAP_2_STR-SKNTO sy-vline 
WA_DTFIAP_2_STR-WAERS sy-vline 
WA_DTFIAP_2_STR-WRSOL sy-vline 
WA_DTFIAP_2_STR-WRHAB sy-vline 
WA_DTFIAP_2_STR-WRSHB sy-vline 
WA_DTFIAP_2_STR-WSKTO sy-vline 
WA_DTFIAP_2_STR-SKFBT sy-vline      INTO ld_text SEPARATED BY SPACE.

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