ABAP Select data from SAP table P0412 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0412 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 P0412. 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 P0412 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_P0412 TYPE STANDARD TABLE OF P0412,
      WA_P0412 TYPE P0412,
      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: <P0412> TYPE P0412.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0412.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0412
  INTO TABLE IT_P0412.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0412
*  INTO TABLE @DATA(IT_P04122).
*--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_P0412 INDEX 1 INTO DATA(WA_P04122).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0412 ASSIGNING <P0412>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0412>-PERNR = 1.
<P0412>-INFTY = 1.
<P0412>-SUBTY = 1.
<P0412>-OBJPS = 1.
<P0412>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0412 INTO WA_P0412.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0412-ENDDA, sy-vline,
  WA_P0412-BEGDA, sy-vline,
  WA_P0412-SEQNR, sy-vline,
  WA_P0412-AEDTM, sy-vline,
  WA_P0412-UNAME, sy-vline,
  WA_P0412-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0412 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_P0412 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_P0412 INTO WA_P0412.


*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_P0412_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,
ENAME TYPE STRING,
DESGN TYPE STRING,
STRAS TYPE STRING,
LOCAT TYPE STRING,
ORT01 TYPE STRING,
STATE TYPE STRING,
PSTLZ TYPE STRING,
LAND1 TYPE STRING,
TELNR TYPE STRING,
SNAME TYPE STRING,
STRT TYPE STRING,
LOCT TYPE STRING,
TELPH TYPE STRING,
CITY TYPE STRING,
PSTCD TYPE STRING,
LAND TYPE STRING,
LANDX TYPE STRING,
STAT1 TYPE STRING,
PERID TYPE STRING,
TAXNB TYPE STRING,
PMRES TYPE STRING,
RACKY TYPE STRING,
SPEMS TYPE STRING,
PERMO TYPE STRING,
SPUEM TYPE STRING,
CONFN TYPE STRING,
CLCNO TYPE STRING,
CLDTY TYPE STRING,
FCCSL TYPE STRING,
SYCCL TYPE STRING,
SCCLB TYPE STRING,
SPAIM TYPE STRING,
QTSPL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0412_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_P0412_STR-PERNR sy-vline 
WA_P0412_STR-INFTY sy-vline 
WA_P0412_STR-SUBTY sy-vline 
WA_P0412_STR-OBJPS sy-vline 
WA_P0412_STR-SPRPS sy-vline 
WA_P0412_STR-ENDDA sy-vline 
WA_P0412_STR-BEGDA sy-vline 
WA_P0412_STR-SEQNR sy-vline 
WA_P0412_STR-AEDTM sy-vline 
WA_P0412_STR-UNAME sy-vline 
WA_P0412_STR-HISTO sy-vline 
WA_P0412_STR-ITXEX sy-vline 
WA_P0412_STR-REFEX sy-vline 
WA_P0412_STR-ORDEX sy-vline 
WA_P0412_STR-ITBLD sy-vline 
WA_P0412_STR-PREAS sy-vline 
WA_P0412_STR-FLAG1 sy-vline 
WA_P0412_STR-FLAG2 sy-vline 
WA_P0412_STR-FLAG3 sy-vline 
WA_P0412_STR-FLAG4 sy-vline 
WA_P0412_STR-RESE1 sy-vline 
WA_P0412_STR-RESE2 sy-vline 
WA_P0412_STR-GRPVL sy-vline 
WA_P0412_STR-ENAME sy-vline 
WA_P0412_STR-DESGN sy-vline 
WA_P0412_STR-STRAS sy-vline 
WA_P0412_STR-LOCAT sy-vline 
WA_P0412_STR-ORT01 sy-vline 
WA_P0412_STR-STATE sy-vline 
WA_P0412_STR-PSTLZ sy-vline 
WA_P0412_STR-LAND1 sy-vline 
WA_P0412_STR-TELNR sy-vline 
WA_P0412_STR-SNAME sy-vline 
WA_P0412_STR-STRT sy-vline 
WA_P0412_STR-LOCT sy-vline 
WA_P0412_STR-TELPH sy-vline 
WA_P0412_STR-CITY sy-vline 
WA_P0412_STR-PSTCD sy-vline 
WA_P0412_STR-LAND sy-vline 
WA_P0412_STR-LANDX sy-vline 
WA_P0412_STR-STAT1 sy-vline 
WA_P0412_STR-PERID sy-vline 
WA_P0412_STR-TAXNB sy-vline 
WA_P0412_STR-PMRES sy-vline 
WA_P0412_STR-RACKY sy-vline 
WA_P0412_STR-SPEMS sy-vline 
WA_P0412_STR-PERMO sy-vline 
WA_P0412_STR-SPUEM sy-vline 
WA_P0412_STR-CONFN sy-vline 
WA_P0412_STR-CLCNO sy-vline 
WA_P0412_STR-CLDTY sy-vline 
WA_P0412_STR-FCCSL sy-vline 
WA_P0412_STR-SYCCL sy-vline 
WA_P0412_STR-SCCLB sy-vline 
WA_P0412_STR-SPAIM sy-vline 
WA_P0412_STR-QTSPL sy-vline      INTO ld_text SEPARATED BY SPACE.

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