ABAP Select data from SAP table P0437 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0437 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 P0437. 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 P0437 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_P0437 TYPE STANDARD TABLE OF P0437,
      WA_P0437 TYPE P0437,
      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: <P0437> TYPE P0437.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0437.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0437
  INTO TABLE IT_P0437.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0437
*  INTO TABLE @DATA(IT_P04372).
*--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_P0437 INDEX 1 INTO DATA(WA_P04372).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0437 ASSIGNING <P0437>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0437>-PERNR = 1.
<P0437>-INFTY = 1.
<P0437>-SUBTY = 1.
<P0437>-OBJPS = 1.
<P0437>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0437 INTO WA_P0437.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0437-ENDDA, sy-vline,
  WA_P0437-BEGDA, sy-vline,
  WA_P0437-SEQNR, sy-vline,
  WA_P0437-AEDTM, sy-vline,
  WA_P0437-UNAME, sy-vline,
  WA_P0437-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0437 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_P0437 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_P0437 INTO WA_P0437.


*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 PBRCJ, internal->external for field NRINC
CALL FUNCTION 'CONVERSION_EXIT_PBRCJ_OUTPUT'
  EXPORTING
    input =                      WA_P0437-NRINC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_P0437-NRINC.
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_P0437_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,
EMPLO TYPE STRING,
LGA01 TYPE STRING,
BET01 TYPE STRING,
LGA02 TYPE STRING,
BET02 TYPE STRING,
LGA03 TYPE STRING,
BET03 TYPE STRING,
LGA04 TYPE STRING,
BET04 TYPE STRING,
LGA05 TYPE STRING,
BET05 TYPE STRING,
LGA06 TYPE STRING,
BET06 TYPE STRING,
LGA07 TYPE STRING,
BET07 TYPE STRING,
LGA08 TYPE STRING,
BET08 TYPE STRING,
LGA09 TYPE STRING,
BET09 TYPE STRING,
LGA10 TYPE STRING,
BET10 TYPE STRING,
LGA11 TYPE STRING,
BET11 TYPE STRING,
LGA12 TYPE STRING,
BET12 TYPE STRING,
LGA13 TYPE STRING,
BET13 TYPE STRING,
LGA14 TYPE STRING,
BET14 TYPE STRING,
LGA15 TYPE STRING,
BET15 TYPE STRING,
LGA16 TYPE STRING,
BET16 TYPE STRING,
LGA17 TYPE STRING,
BET17 TYPE STRING,
LGA18 TYPE STRING,
BET18 TYPE STRING,
LGA19 TYPE STRING,
BET19 TYPE STRING,
LGA20 TYPE STRING,
BET20 TYPE STRING,
NRINC TYPE STRING,
CATTR TYPE STRING,
CPF_NR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0437_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_P0437_STR-PERNR sy-vline 
WA_P0437_STR-INFTY sy-vline 
WA_P0437_STR-SUBTY sy-vline 
WA_P0437_STR-OBJPS sy-vline 
WA_P0437_STR-SPRPS sy-vline 
WA_P0437_STR-ENDDA sy-vline 
WA_P0437_STR-BEGDA sy-vline 
WA_P0437_STR-SEQNR sy-vline 
WA_P0437_STR-AEDTM sy-vline 
WA_P0437_STR-UNAME sy-vline 
WA_P0437_STR-HISTO sy-vline 
WA_P0437_STR-ITXEX sy-vline 
WA_P0437_STR-REFEX sy-vline 
WA_P0437_STR-ORDEX sy-vline 
WA_P0437_STR-ITBLD sy-vline 
WA_P0437_STR-PREAS sy-vline 
WA_P0437_STR-FLAG1 sy-vline 
WA_P0437_STR-FLAG2 sy-vline 
WA_P0437_STR-FLAG3 sy-vline 
WA_P0437_STR-FLAG4 sy-vline 
WA_P0437_STR-RESE1 sy-vline 
WA_P0437_STR-RESE2 sy-vline 
WA_P0437_STR-GRPVL sy-vline 
WA_P0437_STR-EMPLO sy-vline 
WA_P0437_STR-LGA01 sy-vline 
WA_P0437_STR-BET01 sy-vline 
WA_P0437_STR-LGA02 sy-vline 
WA_P0437_STR-BET02 sy-vline 
WA_P0437_STR-LGA03 sy-vline 
WA_P0437_STR-BET03 sy-vline 
WA_P0437_STR-LGA04 sy-vline 
WA_P0437_STR-BET04 sy-vline 
WA_P0437_STR-LGA05 sy-vline 
WA_P0437_STR-BET05 sy-vline 
WA_P0437_STR-LGA06 sy-vline 
WA_P0437_STR-BET06 sy-vline 
WA_P0437_STR-LGA07 sy-vline 
WA_P0437_STR-BET07 sy-vline 
WA_P0437_STR-LGA08 sy-vline 
WA_P0437_STR-BET08 sy-vline 
WA_P0437_STR-LGA09 sy-vline 
WA_P0437_STR-BET09 sy-vline 
WA_P0437_STR-LGA10 sy-vline 
WA_P0437_STR-BET10 sy-vline 
WA_P0437_STR-LGA11 sy-vline 
WA_P0437_STR-BET11 sy-vline 
WA_P0437_STR-LGA12 sy-vline 
WA_P0437_STR-BET12 sy-vline 
WA_P0437_STR-LGA13 sy-vline 
WA_P0437_STR-BET13 sy-vline 
WA_P0437_STR-LGA14 sy-vline 
WA_P0437_STR-BET14 sy-vline 
WA_P0437_STR-LGA15 sy-vline 
WA_P0437_STR-BET15 sy-vline 
WA_P0437_STR-LGA16 sy-vline 
WA_P0437_STR-BET16 sy-vline 
WA_P0437_STR-LGA17 sy-vline 
WA_P0437_STR-BET17 sy-vline 
WA_P0437_STR-LGA18 sy-vline 
WA_P0437_STR-BET18 sy-vline 
WA_P0437_STR-LGA19 sy-vline 
WA_P0437_STR-BET19 sy-vline 
WA_P0437_STR-LGA20 sy-vline 
WA_P0437_STR-BET20 sy-vline 
WA_P0437_STR-NRINC sy-vline 
WA_P0437_STR-CATTR sy-vline 
WA_P0437_STR-CPF_NR sy-vline      INTO ld_text SEPARATED BY SPACE.

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