ABAP Select data from SAP table PVCMPHD 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 PVCMPHD 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 PVCMPHD. 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 PVCMPHD 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_PVCMPHD TYPE STANDARD TABLE OF PVCMPHD,
      WA_PVCMPHD TYPE PVCMPHD,
      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: <PVCMPHD> TYPE PVCMPHD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PVCMPHD
*  INTO TABLE @DATA(IT_PVCMPHD2).
*--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_PVCMPHD INDEX 1 INTO DATA(WA_PVCMPHD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PVCMPHD>-PVGUID = 1.
<PVCMPHD>-PVNAME = 1.
<PVCMPHD>-NAMEID = 1.
<PVCMPHD>-PNGUID = 1.
<PVCMPHD>-AENNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PVCMPHD-DELFLG, sy-vline,
  WA_PVCMPHD-CLINT, sy-vline,
  WA_PVCMPHD-NONCOLCMP, sy-vline,
  WA_PVCMPHD-CCODE, sy-vline,
  WA_PVCMPHD-PVCTYPE, sy-vline,
  WA_PVCMPHD-CMPID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PVCMPHD 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_PVCMPHD 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_PVCMPHD INTO WA_PVCMPHD.


*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 PVNAME
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PVCMPHD-PVNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PVCMPHD-PVNAME.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field ROKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PVCMPHD-ROKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PVCMPHD-ROKME.
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_PVCMPHD_STR, 
PVGUID TYPE STRING,
PVNAME TYPE STRING,
NAMEID TYPE STRING,
PNGUID TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
CLINT TYPE STRING,
NONCOLCMP TYPE STRING,
CCODE TYPE STRING,
PVCTYPE TYPE STRING,
CMPID TYPE STRING,
QUANT TYPE STRING,
QUNIT TYPE STRING,
DOCID TYPE STRING,
STDVAR TYPE STRING,
PRIO TYPE STRING,
KNOBJ TYPE STRING,
CUOBJ TYPE STRING,
OTYPE TYPE STRING,
PGUID TYPE STRING,
ROMS1 TYPE STRING,
PRCNT1 TYPE STRING,
ROMS2 TYPE STRING,
PRCNT2 TYPE STRING,
ROMS3 TYPE STRING,
PRCNT3 TYPE STRING,
ROMEI TYPE STRING,
ROMEN TYPE STRING,
ROKME TYPE STRING,
RFORM TYPE STRING,
QUANT_FIX_PD TYPE STRING,
OTYPE_PD TYPE STRING,
PGUID_PD TYPE STRING,
OTYPE_REF_PD TYPE STRING,
PGUID_REF_PD TYPE STRING,
ALTGRP_PD TYPE STRING,
CO_DATA_FLG_PD TYPE STRING,
DMUCNT TYPE STRING,
PVCNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PVCMPHD_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_PVCMPHD_STR-PVGUID sy-vline 
WA_PVCMPHD_STR-PVNAME sy-vline 
WA_PVCMPHD_STR-NAMEID sy-vline 
WA_PVCMPHD_STR-PNGUID sy-vline 
WA_PVCMPHD_STR-AENNR sy-vline 
WA_PVCMPHD_STR-DELFLG sy-vline 
WA_PVCMPHD_STR-CLINT sy-vline 
WA_PVCMPHD_STR-NONCOLCMP sy-vline 
WA_PVCMPHD_STR-CCODE sy-vline 
WA_PVCMPHD_STR-PVCTYPE sy-vline 
WA_PVCMPHD_STR-CMPID sy-vline 
WA_PVCMPHD_STR-QUANT sy-vline 
WA_PVCMPHD_STR-QUNIT sy-vline 
WA_PVCMPHD_STR-DOCID sy-vline 
WA_PVCMPHD_STR-STDVAR sy-vline 
WA_PVCMPHD_STR-PRIO sy-vline 
WA_PVCMPHD_STR-KNOBJ sy-vline 
WA_PVCMPHD_STR-CUOBJ sy-vline 
WA_PVCMPHD_STR-OTYPE sy-vline 
WA_PVCMPHD_STR-PGUID sy-vline 
WA_PVCMPHD_STR-ROMS1 sy-vline 
WA_PVCMPHD_STR-PRCNT1 sy-vline 
WA_PVCMPHD_STR-ROMS2 sy-vline 
WA_PVCMPHD_STR-PRCNT2 sy-vline 
WA_PVCMPHD_STR-ROMS3 sy-vline 
WA_PVCMPHD_STR-PRCNT3 sy-vline 
WA_PVCMPHD_STR-ROMEI sy-vline 
WA_PVCMPHD_STR-ROMEN sy-vline 
WA_PVCMPHD_STR-ROKME sy-vline 
WA_PVCMPHD_STR-RFORM sy-vline 
WA_PVCMPHD_STR-QUANT_FIX_PD sy-vline 
WA_PVCMPHD_STR-OTYPE_PD sy-vline 
WA_PVCMPHD_STR-PGUID_PD sy-vline 
WA_PVCMPHD_STR-OTYPE_REF_PD sy-vline 
WA_PVCMPHD_STR-PGUID_REF_PD sy-vline 
WA_PVCMPHD_STR-ALTGRP_PD sy-vline 
WA_PVCMPHD_STR-CO_DATA_FLG_PD sy-vline 
WA_PVCMPHD_STR-DMUCNT sy-vline 
WA_PVCMPHD_STR-PVCNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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