ABAP Select data from SAP table P0771 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0771 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 P0771. 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 P0771 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_P0771 TYPE STANDARD TABLE OF P0771,
      WA_P0771 TYPE P0771,
      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: <P0771> TYPE P0771.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0771.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0771
  INTO TABLE IT_P0771.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0771
*  INTO TABLE @DATA(IT_P07712).
*--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_P0771 INDEX 1 INTO DATA(WA_P07712).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0771 ASSIGNING <P0771>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0771>-PERNR = 1.
<P0771>-INFTY = 1.
<P0771>-SUBTY = 1.
<P0771>-OBJPS = 1.
<P0771>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0771 INTO WA_P0771.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0771-ENDDA, sy-vline,
  WA_P0771-BEGDA, sy-vline,
  WA_P0771-SEQNR, sy-vline,
  WA_P0771-AEDTM, sy-vline,
  WA_P0771-UNAME, sy-vline,
  WA_P0771-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0771 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_P0771 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_P0771 INTO WA_P0771.


*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_P0771_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,
CTTYP TYPE STRING,
IMMIG TYPE STRING,
IMDAT TYPE STRING,
EXCON TYPE STRING,
EXDAT TYPE STRING,
VITER TYPE STRING,
VIDAT TYPE STRING,
MSLKD TYPE STRING,
MSLKS TYPE STRING,
JOBCO TYPE STRING,
AVANS TYPE STRING,
IKRAM TYPE STRING,
EMAYL TYPE STRING,
BKAYL TYPE STRING,
DGAYL TYPE STRING,
SGDP1 TYPE STRING,
TRTSK TYPE STRING,
BORGO0 TYPE STRING,
BORDE0 TYPE STRING,
BORGO1 TYPE STRING,
BORDE1 TYPE STRING,
BORGO2 TYPE STRING,
BORDE2 TYPE STRING,
BORGO3 TYPE STRING,
BORDE3 TYPE STRING,
BORGO4 TYPE STRING,
BORDE4 TYPE STRING,
BORGO5 TYPE STRING,
BORDE5 TYPE STRING,
BORGO6 TYPE STRING,
BORDE6 TYPE STRING,
BORGO7 TYPE STRING,
BORDE7 TYPE STRING,
BORGO8 TYPE STRING,
BORDE8 TYPE STRING,
BORGO9 TYPE STRING,
BORDE9 TYPE STRING,
ASKRD TYPE STRING,
ASBEG TYPE STRING,
ASEND TYPE STRING,
SGTTR TYPE STRING,
MESLK TYPE STRING,
SGKIL TYPE STRING,
SGILC TYPE STRING,
JOBC2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0771_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_P0771_STR-PERNR sy-vline 
WA_P0771_STR-INFTY sy-vline 
WA_P0771_STR-SUBTY sy-vline 
WA_P0771_STR-OBJPS sy-vline 
WA_P0771_STR-SPRPS sy-vline 
WA_P0771_STR-ENDDA sy-vline 
WA_P0771_STR-BEGDA sy-vline 
WA_P0771_STR-SEQNR sy-vline 
WA_P0771_STR-AEDTM sy-vline 
WA_P0771_STR-UNAME sy-vline 
WA_P0771_STR-HISTO sy-vline 
WA_P0771_STR-ITXEX sy-vline 
WA_P0771_STR-REFEX sy-vline 
WA_P0771_STR-ORDEX sy-vline 
WA_P0771_STR-ITBLD sy-vline 
WA_P0771_STR-PREAS sy-vline 
WA_P0771_STR-FLAG1 sy-vline 
WA_P0771_STR-FLAG2 sy-vline 
WA_P0771_STR-FLAG3 sy-vline 
WA_P0771_STR-FLAG4 sy-vline 
WA_P0771_STR-RESE1 sy-vline 
WA_P0771_STR-RESE2 sy-vline 
WA_P0771_STR-GRPVL sy-vline 
WA_P0771_STR-CTTYP sy-vline 
WA_P0771_STR-IMMIG sy-vline 
WA_P0771_STR-IMDAT sy-vline 
WA_P0771_STR-EXCON sy-vline 
WA_P0771_STR-EXDAT sy-vline 
WA_P0771_STR-VITER sy-vline 
WA_P0771_STR-VIDAT sy-vline 
WA_P0771_STR-MSLKD sy-vline 
WA_P0771_STR-MSLKS sy-vline 
WA_P0771_STR-JOBCO sy-vline 
WA_P0771_STR-AVANS sy-vline 
WA_P0771_STR-IKRAM sy-vline 
WA_P0771_STR-EMAYL sy-vline 
WA_P0771_STR-BKAYL sy-vline 
WA_P0771_STR-DGAYL sy-vline 
WA_P0771_STR-SGDP1 sy-vline 
WA_P0771_STR-TRTSK sy-vline 
WA_P0771_STR-BORGO0 sy-vline 
WA_P0771_STR-BORDE0 sy-vline 
WA_P0771_STR-BORGO1 sy-vline 
WA_P0771_STR-BORDE1 sy-vline 
WA_P0771_STR-BORGO2 sy-vline 
WA_P0771_STR-BORDE2 sy-vline 
WA_P0771_STR-BORGO3 sy-vline 
WA_P0771_STR-BORDE3 sy-vline 
WA_P0771_STR-BORGO4 sy-vline 
WA_P0771_STR-BORDE4 sy-vline 
WA_P0771_STR-BORGO5 sy-vline 
WA_P0771_STR-BORDE5 sy-vline 
WA_P0771_STR-BORGO6 sy-vline 
WA_P0771_STR-BORDE6 sy-vline 
WA_P0771_STR-BORGO7 sy-vline 
WA_P0771_STR-BORDE7 sy-vline 
WA_P0771_STR-BORGO8 sy-vline 
WA_P0771_STR-BORDE8 sy-vline 
WA_P0771_STR-BORGO9 sy-vline 
WA_P0771_STR-BORDE9 sy-vline 
WA_P0771_STR-ASKRD sy-vline 
WA_P0771_STR-ASBEG sy-vline 
WA_P0771_STR-ASEND sy-vline 
WA_P0771_STR-SGTTR sy-vline 
WA_P0771_STR-MESLK sy-vline 
WA_P0771_STR-SGKIL sy-vline 
WA_P0771_STR-SGILC sy-vline 
WA_P0771_STR-JOBC2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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