ABAP Select data from SAP table P0156 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP P0156 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 P0156. 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 P0156 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_P0156 TYPE STANDARD TABLE OF P0156,
      WA_P0156 TYPE P0156,
      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: <P0156> TYPE P0156.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P0156.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P0156
  INTO TABLE IT_P0156.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P0156
*  INTO TABLE @DATA(IT_P01562).
*--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_P0156 INDEX 1 INTO DATA(WA_P01562).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P0156 ASSIGNING <P0156>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P0156>-PERNR = 1.
<P0156>-INFTY = 1.
<P0156>-SUBTY = 1.
<P0156>-OBJPS = 1.
<P0156>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_P0156 INTO WA_P0156.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P0156-ENDDA, sy-vline,
  WA_P0156-BEGDA, sy-vline,
  WA_P0156-SEQNR, sy-vline,
  WA_P0156-AEDTM, sy-vline,
  WA_P0156-UNAME, sy-vline,
  WA_P0156-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P0156 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_P0156 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_P0156 INTO WA_P0156.


*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_P0156_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,
TPASI TYPE STRING,
CDCOI TYPE STRING,
CDDTR TYPE STRING,
TPCM1 TYPE STRING,
NUCA1 TYPE STRING,
PRCO1 TYPE STRING,
XRIC1 TYPE STRING,
TPCM2 TYPE STRING,
NUCA2 TYPE STRING,
PRCO2 TYPE STRING,
XRIC2 TYPE STRING,
TPCM3 TYPE STRING,
NUCA3 TYPE STRING,
PRCO3 TYPE STRING,
XRIC3 TYPE STRING,
TPCM4 TYPE STRING,
NUCA4 TYPE STRING,
PRCO4 TYPE STRING,
XRIC4 TYPE STRING,
TPCM5 TYPE STRING,
NUCA5 TYPE STRING,
PRCO5 TYPE STRING,
XRIC5 TYPE STRING,
TPCM6 TYPE STRING,
NUCA6 TYPE STRING,
PRCO6 TYPE STRING,
XRIC6 TYPE STRING,
TPCM7 TYPE STRING,
NUCA7 TYPE STRING,
PRCO7 TYPE STRING,
XRIC7 TYPE STRING,
TPCM8 TYPE STRING,
NUCA8 TYPE STRING,
PRCO8 TYPE STRING,
XRIC8 TYPE STRING,
TPCM9 TYPE STRING,
NUCA9 TYPE STRING,
PRCO9 TYPE STRING,
XRIC9 TYPE STRING,
TPC10 TYPE STRING,
NUC10 TYPE STRING,
PRC10 TYPE STRING,
XRI10 TYPE STRING,
TPDE1 TYPE STRING,
XRTD1 TYPE STRING,
TPDE2 TYPE STRING,
XRTD2 TYPE STRING,
TPDE3 TYPE STRING,
XRTD3 TYPE STRING,
TPDE4 TYPE STRING,
XRTD4 TYPE STRING,
TPDE5 TYPE STRING,
XRTD5 TYPE STRING,
TPON1 TYPE STRING,
XROD1 TYPE STRING,
TPON2 TYPE STRING,
XROD2 TYPE STRING,
TPON3 TYPE STRING,
XROD3 TYPE STRING,
TPON4 TYPE STRING,
XROD4 TYPE STRING,
TPON5 TYPE STRING,
XROD5 TYPE STRING,
CDALT TYPE STRING,
CDTRE TYPE STRING,
REGIO TYPE STRING,
PROVI TYPE STRING,
CDTPR TYPE STRING,
MUNIC TYPE STRING,
CDTMU TYPE STRING,
CDEDU TYPE STRING,
DTMIN TYPE STRING,
FDMIN TYPE STRING,
RDTSS TYPE STRING,
APAIM TYPE STRING,
UDEFA TYPE STRING,
RRCF TYPE STRING,
MERGED_COMUNE TYPE STRING,
DIFF_TAX_MERGED_COMUNE TYPE STRING,
BBOPT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P0156_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_P0156_STR-PERNR sy-vline 
WA_P0156_STR-INFTY sy-vline 
WA_P0156_STR-SUBTY sy-vline 
WA_P0156_STR-OBJPS sy-vline 
WA_P0156_STR-SPRPS sy-vline 
WA_P0156_STR-ENDDA sy-vline 
WA_P0156_STR-BEGDA sy-vline 
WA_P0156_STR-SEQNR sy-vline 
WA_P0156_STR-AEDTM sy-vline 
WA_P0156_STR-UNAME sy-vline 
WA_P0156_STR-HISTO sy-vline 
WA_P0156_STR-ITXEX sy-vline 
WA_P0156_STR-REFEX sy-vline 
WA_P0156_STR-ORDEX sy-vline 
WA_P0156_STR-ITBLD sy-vline 
WA_P0156_STR-PREAS sy-vline 
WA_P0156_STR-FLAG1 sy-vline 
WA_P0156_STR-FLAG2 sy-vline 
WA_P0156_STR-FLAG3 sy-vline 
WA_P0156_STR-FLAG4 sy-vline 
WA_P0156_STR-RESE1 sy-vline 
WA_P0156_STR-RESE2 sy-vline 
WA_P0156_STR-GRPVL sy-vline 
WA_P0156_STR-TPASI sy-vline 
WA_P0156_STR-CDCOI sy-vline 
WA_P0156_STR-CDDTR sy-vline 
WA_P0156_STR-TPCM1 sy-vline 
WA_P0156_STR-NUCA1 sy-vline 
WA_P0156_STR-PRCO1 sy-vline 
WA_P0156_STR-XRIC1 sy-vline 
WA_P0156_STR-TPCM2 sy-vline 
WA_P0156_STR-NUCA2 sy-vline 
WA_P0156_STR-PRCO2 sy-vline 
WA_P0156_STR-XRIC2 sy-vline 
WA_P0156_STR-TPCM3 sy-vline 
WA_P0156_STR-NUCA3 sy-vline 
WA_P0156_STR-PRCO3 sy-vline 
WA_P0156_STR-XRIC3 sy-vline 
WA_P0156_STR-TPCM4 sy-vline 
WA_P0156_STR-NUCA4 sy-vline 
WA_P0156_STR-PRCO4 sy-vline 
WA_P0156_STR-XRIC4 sy-vline 
WA_P0156_STR-TPCM5 sy-vline 
WA_P0156_STR-NUCA5 sy-vline 
WA_P0156_STR-PRCO5 sy-vline 
WA_P0156_STR-XRIC5 sy-vline 
WA_P0156_STR-TPCM6 sy-vline 
WA_P0156_STR-NUCA6 sy-vline 
WA_P0156_STR-PRCO6 sy-vline 
WA_P0156_STR-XRIC6 sy-vline 
WA_P0156_STR-TPCM7 sy-vline 
WA_P0156_STR-NUCA7 sy-vline 
WA_P0156_STR-PRCO7 sy-vline 
WA_P0156_STR-XRIC7 sy-vline 
WA_P0156_STR-TPCM8 sy-vline 
WA_P0156_STR-NUCA8 sy-vline 
WA_P0156_STR-PRCO8 sy-vline 
WA_P0156_STR-XRIC8 sy-vline 
WA_P0156_STR-TPCM9 sy-vline 
WA_P0156_STR-NUCA9 sy-vline 
WA_P0156_STR-PRCO9 sy-vline 
WA_P0156_STR-XRIC9 sy-vline 
WA_P0156_STR-TPC10 sy-vline 
WA_P0156_STR-NUC10 sy-vline 
WA_P0156_STR-PRC10 sy-vline 
WA_P0156_STR-XRI10 sy-vline 
WA_P0156_STR-TPDE1 sy-vline 
WA_P0156_STR-XRTD1 sy-vline 
WA_P0156_STR-TPDE2 sy-vline 
WA_P0156_STR-XRTD2 sy-vline 
WA_P0156_STR-TPDE3 sy-vline 
WA_P0156_STR-XRTD3 sy-vline 
WA_P0156_STR-TPDE4 sy-vline 
WA_P0156_STR-XRTD4 sy-vline 
WA_P0156_STR-TPDE5 sy-vline 
WA_P0156_STR-XRTD5 sy-vline 
WA_P0156_STR-TPON1 sy-vline 
WA_P0156_STR-XROD1 sy-vline 
WA_P0156_STR-TPON2 sy-vline 
WA_P0156_STR-XROD2 sy-vline 
WA_P0156_STR-TPON3 sy-vline 
WA_P0156_STR-XROD3 sy-vline 
WA_P0156_STR-TPON4 sy-vline 
WA_P0156_STR-XROD4 sy-vline 
WA_P0156_STR-TPON5 sy-vline 
WA_P0156_STR-XROD5 sy-vline 
WA_P0156_STR-CDALT sy-vline 
WA_P0156_STR-CDTRE sy-vline 
WA_P0156_STR-REGIO sy-vline 
WA_P0156_STR-PROVI sy-vline 
WA_P0156_STR-CDTPR sy-vline 
WA_P0156_STR-MUNIC sy-vline 
WA_P0156_STR-CDTMU sy-vline 
WA_P0156_STR-CDEDU sy-vline 
WA_P0156_STR-DTMIN sy-vline 
WA_P0156_STR-FDMIN sy-vline 
WA_P0156_STR-RDTSS sy-vline 
WA_P0156_STR-APAIM sy-vline 
WA_P0156_STR-UDEFA sy-vline 
WA_P0156_STR-RRCF sy-vline 
WA_P0156_STR-MERGED_COMUNE sy-vline 
WA_P0156_STR-DIFF_TAX_MERGED_COMUNE sy-vline 
WA_P0156_STR-BBOPT sy-vline      INTO ld_text SEPARATED BY SPACE.

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