ABAP Select data from SAP table PCMPB into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PCMPB 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 PCMPB. 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 PCMPB 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_PCMPB TYPE STANDARD TABLE OF PCMPB,
      WA_PCMPB TYPE PCMPB,
      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: <PCMPB> TYPE PCMPB.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCMPB
*  INTO TABLE @DATA(IT_PCMPB2).
*--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_PCMPB INDEX 1 INTO DATA(WA_PCMPB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCMPB>-MANDT = 1.
<PCMPB>-PCMNR = 1.
<PCMPB>-ZAEHL = 1.
<PCMPB>-POSNR = 1.
<PCMPB>-PLNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCMPB-AUFNR, sy-vline,
  WA_PCMPB-AUFART, sy-vline,
  WA_PCMPB-AUFTYP, sy-vline,
  WA_PCMPB-MATNR, sy-vline,
  WA_PCMPB-WERKS, sy-vline,
  WA_PCMPB-CLOKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCMPB 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_PCMPB 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_PCMPB INTO WA_PCMPB.


*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 ALPHA, internal->external for field PCMNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCMPB-PCMNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCMPB-PCMNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PCMPB-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCMPB-POSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCMPB-PLNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCMPB-PLNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCMPB-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCMPB-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PCMPB-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCMPB-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR_AUS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCMPB-AENNR_AUS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCMPB-AENNR_AUS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PCMPB-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCMPB-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCMPB-PLNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCMPB-PLNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCMPB-PLNAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCMPB-PLNAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BPNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCMPB-BPNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCMPB-BPNO.
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_PCMPB_STR, 
MANDT TYPE STRING,
PCMNR TYPE STRING,
ZAEHL TYPE STRING,
POSNR TYPE STRING,
PLNUM TYPE STRING,
AUFNR TYPE STRING,
AUFART TYPE STRING,
AUFTYP TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
CLOKZ TYPE STRING,
PCMPOS TYPE STRING,
VBKZ TYPE STRING,
DATUB TYPE STRING,
AENNR_AUS TYPE STRING,
VERID TYPE STRING,
ECKST TYPE STRING,
ECKSTT TYPE STRING,
ECKED TYPE STRING,
ECKEDT TYPE STRING,
DISPO TYPE STRING,
UMSKZ TYPE STRING,
AUFFX TYPE STRING,
TRART TYPE STRING,
TERST TYPE STRING,
TERED TYPE STRING,
PSTTI TYPE STRING,
PEDTI TYPE STRING,
GSMNG TYPE STRING,
MEINS TYPE STRING,
FABKL TYPE STRING,
FLG_SEL TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
VBKZ_AUFNR TYPE STRING,
UMSETZKZ TYPE STRING,
MARK TYPE STRING,
OBJNR TYPE STRING,
PERTR TYPE STRING,
FREI_FLAG TYPE STRING,
ENDRU_FLAG TYPE STRING,
IGMNG TYPE STRING,
GWEMG TYPE STRING,
AVMNG TYPE STRING,
FLG_SCRAP TYPE STRING,
BPNO TYPE STRING,
LGORT TYPE STRING,
FLG_LOEVM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCMPB_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_PCMPB_STR-MANDT sy-vline 
WA_PCMPB_STR-PCMNR sy-vline 
WA_PCMPB_STR-ZAEHL sy-vline 
WA_PCMPB_STR-POSNR sy-vline 
WA_PCMPB_STR-PLNUM sy-vline 
WA_PCMPB_STR-AUFNR sy-vline 
WA_PCMPB_STR-AUFART sy-vline 
WA_PCMPB_STR-AUFTYP sy-vline 
WA_PCMPB_STR-MATNR sy-vline 
WA_PCMPB_STR-WERKS sy-vline 
WA_PCMPB_STR-CLOKZ sy-vline 
WA_PCMPB_STR-PCMPOS sy-vline 
WA_PCMPB_STR-VBKZ sy-vline 
WA_PCMPB_STR-DATUB sy-vline 
WA_PCMPB_STR-AENNR_AUS sy-vline 
WA_PCMPB_STR-VERID sy-vline 
WA_PCMPB_STR-ECKST sy-vline 
WA_PCMPB_STR-ECKSTT sy-vline 
WA_PCMPB_STR-ECKED sy-vline 
WA_PCMPB_STR-ECKEDT sy-vline 
WA_PCMPB_STR-DISPO sy-vline 
WA_PCMPB_STR-UMSKZ sy-vline 
WA_PCMPB_STR-AUFFX sy-vline 
WA_PCMPB_STR-TRART sy-vline 
WA_PCMPB_STR-TERST sy-vline 
WA_PCMPB_STR-TERED sy-vline 
WA_PCMPB_STR-PSTTI sy-vline 
WA_PCMPB_STR-PEDTI sy-vline 
WA_PCMPB_STR-GSMNG sy-vline 
WA_PCMPB_STR-MEINS sy-vline 
WA_PCMPB_STR-FABKL sy-vline 
WA_PCMPB_STR-FLG_SEL sy-vline 
WA_PCMPB_STR-PLNTY sy-vline 
WA_PCMPB_STR-PLNNR sy-vline 
WA_PCMPB_STR-PLNAL sy-vline 
WA_PCMPB_STR-VBKZ_AUFNR sy-vline 
WA_PCMPB_STR-UMSETZKZ sy-vline 
WA_PCMPB_STR-MARK sy-vline 
WA_PCMPB_STR-OBJNR sy-vline 
WA_PCMPB_STR-PERTR sy-vline 
WA_PCMPB_STR-FREI_FLAG sy-vline 
WA_PCMPB_STR-ENDRU_FLAG sy-vline 
WA_PCMPB_STR-IGMNG sy-vline 
WA_PCMPB_STR-GWEMG sy-vline 
WA_PCMPB_STR-AVMNG sy-vline 
WA_PCMPB_STR-FLG_SCRAP sy-vline 
WA_PCMPB_STR-BPNO sy-vline 
WA_PCMPB_STR-LGORT sy-vline 
WA_PCMPB_STR-FLG_LOEVM sy-vline      INTO ld_text SEPARATED BY SPACE.

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