ABAP Select data from SAP table P0055 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0055 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 P0055. 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 P0055 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_P0055 TYPE STANDARD TABLE OF P0055,
      WA_P0055 TYPE P0055,
      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: <P0055> TYPE P0055.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0055.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0055
  INTO TABLE IT_P0055.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0055
*  INTO TABLE @DATA(IT_P00552).
*--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_P0055 INDEX 1 INTO DATA(WA_P00552).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0055 ASSIGNING <P0055>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0055>-PERNR = 1.
<P0055>-INFTY = 1.
<P0055>-SUBTY = 1.
<P0055>-OBJPS = 1.
<P0055>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0055 INTO WA_P0055.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0055-ENDDA, sy-vline,
  WA_P0055-BEGDA, sy-vline,
  WA_P0055-SEQNR, sy-vline,
  WA_P0055-AEDTM, sy-vline,
  WA_P0055-UNAME, sy-vline,
  WA_P0055-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0055 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_P0055 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_P0055 INTO WA_P0055.


*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_P0055_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,
NVL16 TYPE STRING,
LGA01 TYPE STRING,
ANZ01 TYPE STRING,
BET01 TYPE STRING,
LGA02 TYPE STRING,
ANZ02 TYPE STRING,
BET02 TYPE STRING,
LGA03 TYPE STRING,
ANZ03 TYPE STRING,
BET03 TYPE STRING,
LGA04 TYPE STRING,
ANZ04 TYPE STRING,
BET04 TYPE STRING,
LGA05 TYPE STRING,
ANZ05 TYPE STRING,
BET05 TYPE STRING,
LGA06 TYPE STRING,
ANZ06 TYPE STRING,
BET06 TYPE STRING,
LGA07 TYPE STRING,
ANZ07 TYPE STRING,
BET07 TYPE STRING,
LGA08 TYPE STRING,
ANZ08 TYPE STRING,
BET08 TYPE STRING,
LGA09 TYPE STRING,
ANZ09 TYPE STRING,
BET09 TYPE STRING,
LGA10 TYPE STRING,
ANZ10 TYPE STRING,
BET10 TYPE STRING,
LGA11 TYPE STRING,
ANZ11 TYPE STRING,
BET11 TYPE STRING,
LGA12 TYPE STRING,
ANZ12 TYPE STRING,
BET12 TYPE STRING,
LGA13 TYPE STRING,
ANZ13 TYPE STRING,
BET13 TYPE STRING,
LGA14 TYPE STRING,
ANZ14 TYPE STRING,
BET14 TYPE STRING,
LGA15 TYPE STRING,
ANZ15 TYPE STRING,
BET15 TYPE STRING,
LGA16 TYPE STRING,
ANZ16 TYPE STRING,
BET16 TYPE STRING,
LGA17 TYPE STRING,
ANZ17 TYPE STRING,
BET17 TYPE STRING,
LGA18 TYPE STRING,
ANZ18 TYPE STRING,
BET18 TYPE STRING,
LGA19 TYPE STRING,
ANZ19 TYPE STRING,
BET19 TYPE STRING,
LGA20 TYPE STRING,
ANZ20 TYPE STRING,
BET20 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0055_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_P0055_STR-PERNR sy-vline 
WA_P0055_STR-INFTY sy-vline 
WA_P0055_STR-SUBTY sy-vline 
WA_P0055_STR-OBJPS sy-vline 
WA_P0055_STR-SPRPS sy-vline 
WA_P0055_STR-ENDDA sy-vline 
WA_P0055_STR-BEGDA sy-vline 
WA_P0055_STR-SEQNR sy-vline 
WA_P0055_STR-AEDTM sy-vline 
WA_P0055_STR-UNAME sy-vline 
WA_P0055_STR-HISTO sy-vline 
WA_P0055_STR-ITXEX sy-vline 
WA_P0055_STR-REFEX sy-vline 
WA_P0055_STR-ORDEX sy-vline 
WA_P0055_STR-ITBLD sy-vline 
WA_P0055_STR-PREAS sy-vline 
WA_P0055_STR-FLAG1 sy-vline 
WA_P0055_STR-FLAG2 sy-vline 
WA_P0055_STR-FLAG3 sy-vline 
WA_P0055_STR-FLAG4 sy-vline 
WA_P0055_STR-RESE1 sy-vline 
WA_P0055_STR-RESE2 sy-vline 
WA_P0055_STR-GRPVL sy-vline 
WA_P0055_STR-NVL16 sy-vline 
WA_P0055_STR-LGA01 sy-vline 
WA_P0055_STR-ANZ01 sy-vline 
WA_P0055_STR-BET01 sy-vline 
WA_P0055_STR-LGA02 sy-vline 
WA_P0055_STR-ANZ02 sy-vline 
WA_P0055_STR-BET02 sy-vline 
WA_P0055_STR-LGA03 sy-vline 
WA_P0055_STR-ANZ03 sy-vline 
WA_P0055_STR-BET03 sy-vline 
WA_P0055_STR-LGA04 sy-vline 
WA_P0055_STR-ANZ04 sy-vline 
WA_P0055_STR-BET04 sy-vline 
WA_P0055_STR-LGA05 sy-vline 
WA_P0055_STR-ANZ05 sy-vline 
WA_P0055_STR-BET05 sy-vline 
WA_P0055_STR-LGA06 sy-vline 
WA_P0055_STR-ANZ06 sy-vline 
WA_P0055_STR-BET06 sy-vline 
WA_P0055_STR-LGA07 sy-vline 
WA_P0055_STR-ANZ07 sy-vline 
WA_P0055_STR-BET07 sy-vline 
WA_P0055_STR-LGA08 sy-vline 
WA_P0055_STR-ANZ08 sy-vline 
WA_P0055_STR-BET08 sy-vline 
WA_P0055_STR-LGA09 sy-vline 
WA_P0055_STR-ANZ09 sy-vline 
WA_P0055_STR-BET09 sy-vline 
WA_P0055_STR-LGA10 sy-vline 
WA_P0055_STR-ANZ10 sy-vline 
WA_P0055_STR-BET10 sy-vline 
WA_P0055_STR-LGA11 sy-vline 
WA_P0055_STR-ANZ11 sy-vline 
WA_P0055_STR-BET11 sy-vline 
WA_P0055_STR-LGA12 sy-vline 
WA_P0055_STR-ANZ12 sy-vline 
WA_P0055_STR-BET12 sy-vline 
WA_P0055_STR-LGA13 sy-vline 
WA_P0055_STR-ANZ13 sy-vline 
WA_P0055_STR-BET13 sy-vline 
WA_P0055_STR-LGA14 sy-vline 
WA_P0055_STR-ANZ14 sy-vline 
WA_P0055_STR-BET14 sy-vline 
WA_P0055_STR-LGA15 sy-vline 
WA_P0055_STR-ANZ15 sy-vline 
WA_P0055_STR-BET15 sy-vline 
WA_P0055_STR-LGA16 sy-vline 
WA_P0055_STR-ANZ16 sy-vline 
WA_P0055_STR-BET16 sy-vline 
WA_P0055_STR-LGA17 sy-vline 
WA_P0055_STR-ANZ17 sy-vline 
WA_P0055_STR-BET17 sy-vline 
WA_P0055_STR-LGA18 sy-vline 
WA_P0055_STR-ANZ18 sy-vline 
WA_P0055_STR-BET18 sy-vline 
WA_P0055_STR-LGA19 sy-vline 
WA_P0055_STR-ANZ19 sy-vline 
WA_P0055_STR-BET19 sy-vline 
WA_P0055_STR-LGA20 sy-vline 
WA_P0055_STR-ANZ20 sy-vline 
WA_P0055_STR-BET20 sy-vline      INTO ld_text SEPARATED BY SPACE.

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