ABAP Select data from SAP table P0012 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0012 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 P0012. 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 P0012 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_P0012 TYPE STANDARD TABLE OF P0012,
      WA_P0012 TYPE P0012,
      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: <P0012> TYPE P0012.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0012.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0012
  INTO TABLE IT_P0012.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0012
*  INTO TABLE @DATA(IT_P00122).
*--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_P0012 INDEX 1 INTO DATA(WA_P00122).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0012 ASSIGNING <P0012>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0012>-PERNR = 1.
<P0012>-INFTY = 1.
<P0012>-SUBTY = 1.
<P0012>-OBJPS = 1.
<P0012>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0012 INTO WA_P0012.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0012-ENDDA, sy-vline,
  WA_P0012-BEGDA, sy-vline,
  WA_P0012-SEQNR, sy-vline,
  WA_P0012-AEDTM, sy-vline,
  WA_P0012-UNAME, sy-vline,
  WA_P0012-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0012 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_P0012 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_P0012 INTO WA_P0012.


*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_P0012_STR, 
PERNR TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
HISTO TYPE STRING,
ITXEX TYPE STRING,
REFEX TYPE STRING,
ORDEX TYPE STRING,
ITBLD TYPE STRING,
PREAS TYPE STRING,
FLAG1 TYPE STRING,
FLAG2 TYPE STRING,
FLAG3 TYPE STRING,
FLAG4 TYPE STRING,
RESE1 TYPE STRING,
RESE2 TYPE STRING,
GRPVL TYPE STRING,
FZAMT TYPE STRING,
GMDNR TYPE STRING,
STKNR TYPE STRING,
STRKZ TYPE STRING,
STRKS TYPE STRING,
STKRT TYPE STRING,
STKAG TYPE STRING,
STRKL TYPE STRING,
STTAB TYPE STRING,
KDFBT TYPE STRING,
STRKD TYPE STRING,
KISTA TYPE STRING,
KISTE TYPE STRING,
BRDLD TYPE STRING,
STPFL TYPE STRING,
PRMNZ TYPE STRING,
STFRG TYPE STRING,
STBFG TYPE STRING,
STRSO TYPE STRING,
STRS2 TYPE STRING,
VFREI TYPE STRING,
FRB1M TYPE STRING,
FRB1J TYPE STRING,
FRB2M TYPE STRING,
FRB2J TYPE STRING,
STBEL TYPE STRING,
BEGVB TYPE STRING,
VBEZL TYPE STRING,
VBEZS TYPE STRING,
ENDVB TYPE STRING,
KJAHR TYPE STRING,
LGVBZ TYPE STRING,
BEGV2 TYPE STRING,
VBE2L TYPE STRING,
VBE2S TYPE STRING,
ENDV2 TYPE STRING,
KJAH2 TYPE STRING,
LGVB2 TYPE STRING,
BEGV3 TYPE STRING,
VBE3L TYPE STRING,
VBE3S TYPE STRING,
ENDV3 TYPE STRING,
KJAH3 TYPE STRING,
LGVB3 TYPE STRING,
BEGV4 TYPE STRING,
VBE4L TYPE STRING,
VBE4S TYPE STRING,
ENDV4 TYPE STRING,
KJAH4 TYPE STRING,
LGVB4 TYPE STRING,
BEGV5 TYPE STRING,
VBE5L TYPE STRING,
VBE5S TYPE STRING,
ENDV5 TYPE STRING,
KJAH5 TYPE STRING,
LGVB5 TYPE STRING,
SIDNR TYPE STRING,
FAKTR TYPE STRING,
E2HAG TYPE STRING,
E2SON TYPE STRING,
E2SON_AN TYPE STRING,
E2SON_AB TYPE STRING,
E2ABM TYPE STRING,
E2SON_GRUND TYPE STRING,
E2ELSTAM TYPE STRING,
E2SPERRE TYPE STRING,
E2SPERRE_GRUND TYPE STRING,
LAND_DBA TYPE STRING,
L2016 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0012_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_P0012_STR-PERNR sy-vline 
WA_P0012_STR-INFTY sy-vline 
WA_P0012_STR-SUBTY sy-vline 
WA_P0012_STR-OBJPS sy-vline 
WA_P0012_STR-SPRPS sy-vline 
WA_P0012_STR-ENDDA sy-vline 
WA_P0012_STR-BEGDA sy-vline 
WA_P0012_STR-SEQNR sy-vline 
WA_P0012_STR-AEDTM sy-vline 
WA_P0012_STR-UNAME sy-vline 
WA_P0012_STR-HISTO sy-vline 
WA_P0012_STR-ITXEX sy-vline 
WA_P0012_STR-REFEX sy-vline 
WA_P0012_STR-ORDEX sy-vline 
WA_P0012_STR-ITBLD sy-vline 
WA_P0012_STR-PREAS sy-vline 
WA_P0012_STR-FLAG1 sy-vline 
WA_P0012_STR-FLAG2 sy-vline 
WA_P0012_STR-FLAG3 sy-vline 
WA_P0012_STR-FLAG4 sy-vline 
WA_P0012_STR-RESE1 sy-vline 
WA_P0012_STR-RESE2 sy-vline 
WA_P0012_STR-GRPVL sy-vline 
WA_P0012_STR-FZAMT sy-vline 
WA_P0012_STR-GMDNR sy-vline 
WA_P0012_STR-STKNR sy-vline 
WA_P0012_STR-STRKZ sy-vline 
WA_P0012_STR-STRKS sy-vline 
WA_P0012_STR-STKRT sy-vline 
WA_P0012_STR-STKAG sy-vline 
WA_P0012_STR-STRKL sy-vline 
WA_P0012_STR-STTAB sy-vline 
WA_P0012_STR-KDFBT sy-vline 
WA_P0012_STR-STRKD sy-vline 
WA_P0012_STR-KISTA sy-vline 
WA_P0012_STR-KISTE sy-vline 
WA_P0012_STR-BRDLD sy-vline 
WA_P0012_STR-STPFL sy-vline 
WA_P0012_STR-PRMNZ sy-vline 
WA_P0012_STR-STFRG sy-vline 
WA_P0012_STR-STBFG sy-vline 
WA_P0012_STR-STRSO sy-vline 
WA_P0012_STR-STRS2 sy-vline 
WA_P0012_STR-VFREI sy-vline 
WA_P0012_STR-FRB1M sy-vline 
WA_P0012_STR-FRB1J sy-vline 
WA_P0012_STR-FRB2M sy-vline 
WA_P0012_STR-FRB2J sy-vline 
WA_P0012_STR-STBEL sy-vline 
WA_P0012_STR-BEGVB sy-vline 
WA_P0012_STR-VBEZL sy-vline 
WA_P0012_STR-VBEZS sy-vline 
WA_P0012_STR-ENDVB sy-vline 
WA_P0012_STR-KJAHR sy-vline 
WA_P0012_STR-LGVBZ sy-vline 
WA_P0012_STR-BEGV2 sy-vline 
WA_P0012_STR-VBE2L sy-vline 
WA_P0012_STR-VBE2S sy-vline 
WA_P0012_STR-ENDV2 sy-vline 
WA_P0012_STR-KJAH2 sy-vline 
WA_P0012_STR-LGVB2 sy-vline 
WA_P0012_STR-BEGV3 sy-vline 
WA_P0012_STR-VBE3L sy-vline 
WA_P0012_STR-VBE3S sy-vline 
WA_P0012_STR-ENDV3 sy-vline 
WA_P0012_STR-KJAH3 sy-vline 
WA_P0012_STR-LGVB3 sy-vline 
WA_P0012_STR-BEGV4 sy-vline 
WA_P0012_STR-VBE4L sy-vline 
WA_P0012_STR-VBE4S sy-vline 
WA_P0012_STR-ENDV4 sy-vline 
WA_P0012_STR-KJAH4 sy-vline 
WA_P0012_STR-LGVB4 sy-vline 
WA_P0012_STR-BEGV5 sy-vline 
WA_P0012_STR-VBE5L sy-vline 
WA_P0012_STR-VBE5S sy-vline 
WA_P0012_STR-ENDV5 sy-vline 
WA_P0012_STR-KJAH5 sy-vline 
WA_P0012_STR-LGVB5 sy-vline 
WA_P0012_STR-SIDNR sy-vline 
WA_P0012_STR-FAKTR sy-vline 
WA_P0012_STR-E2HAG sy-vline 
WA_P0012_STR-E2SON sy-vline 
WA_P0012_STR-E2SON_AN sy-vline 
WA_P0012_STR-E2SON_AB sy-vline 
WA_P0012_STR-E2ABM sy-vline 
WA_P0012_STR-E2SON_GRUND sy-vline 
WA_P0012_STR-E2ELSTAM sy-vline 
WA_P0012_STR-E2SPERRE sy-vline 
WA_P0012_STR-E2SPERRE_GRUND sy-vline 
WA_P0012_STR-LAND_DBA sy-vline 
WA_P0012_STR-L2016 sy-vline      INTO ld_text SEPARATED BY SPACE.

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