ABAP Select data from SAP table PC29V into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC29V 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 PC29V. 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 PC29V 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_PC29V TYPE STANDARD TABLE OF PC29V,
      WA_PC29V TYPE PC29V,
      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: <PC29V> TYPE PC29V.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC29V.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC29V
  INTO TABLE IT_PC29V.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC29V
*  INTO TABLE @DATA(IT_PC29V2).
*--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_PC29V INDEX 1 INTO DATA(WA_PC29V2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC29V ASSIGNING <PC29V>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC29V>-V0TYP = 1.
<PC29V>-V0ZNR = 1.
<PC29V>-BEGDA = 1.
<PC29V>-ENDDA = 1.
<PC29V>-EPLAN = 1.

ENDLOOP.

LOOP AT IT_PC29V INTO WA_PC29V.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC29V-REMEE, sy-vline,
  WA_PC29V-CRMEE, sy-vline,
  WA_PC29V-REMER, sy-vline,
  WA_PC29V-CRMER, sy-vline,
  WA_PC29V-REVEE, sy-vline,
  WA_PC29V-CRVEE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC29V 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_PC29V 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_PC29V INTO WA_PC29V.


*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_PC29V_STR, 
V0TYP TYPE STRING,
V0ZNR TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
EPLAN TYPE STRING,
REMEE TYPE STRING,
CRMEE TYPE STRING,
REMER TYPE STRING,
CRMER TYPE STRING,
REVEE TYPE STRING,
CRVEE TYPE STRING,
REVER TYPE STRING,
CRVER TYPE STRING,
RETEE TYPE STRING,
CRTEE TYPE STRING,
RETER TYPE STRING,
CRTER TYPE STRING,
REAM2 TYPE STRING,
CRAM2 TYPE STRING,
RETAG TYPE STRING,
CALBY TYPE STRING,
PRVER TYPE STRING,
CBENT TYPE STRING,
ENTWT TYPE STRING,
MULTI TYPE STRING,
VSPEE TYPE STRING,
VSPER TYPE STRING,
SCRYY TYPE STRING,
SCRMM TYPE STRING,
SCRDD TYPE STRING,
EEAGE TYPE STRING,
SCALC TYPE STRING,
ENTW2 TYPE STRING,
ENTW3 TYPE STRING,
ENTW4 TYPE STRING,
ENTOF TYPE STRING,
REWTY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC29V_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_PC29V_STR-V0TYP sy-vline 
WA_PC29V_STR-V0ZNR sy-vline 
WA_PC29V_STR-BEGDA sy-vline 
WA_PC29V_STR-ENDDA sy-vline 
WA_PC29V_STR-EPLAN sy-vline 
WA_PC29V_STR-REMEE sy-vline 
WA_PC29V_STR-CRMEE sy-vline 
WA_PC29V_STR-REMER sy-vline 
WA_PC29V_STR-CRMER sy-vline 
WA_PC29V_STR-REVEE sy-vline 
WA_PC29V_STR-CRVEE sy-vline 
WA_PC29V_STR-REVER sy-vline 
WA_PC29V_STR-CRVER sy-vline 
WA_PC29V_STR-RETEE sy-vline 
WA_PC29V_STR-CRTEE sy-vline 
WA_PC29V_STR-RETER sy-vline 
WA_PC29V_STR-CRTER sy-vline 
WA_PC29V_STR-REAM2 sy-vline 
WA_PC29V_STR-CRAM2 sy-vline 
WA_PC29V_STR-RETAG sy-vline 
WA_PC29V_STR-CALBY sy-vline 
WA_PC29V_STR-PRVER sy-vline 
WA_PC29V_STR-CBENT sy-vline 
WA_PC29V_STR-ENTWT sy-vline 
WA_PC29V_STR-MULTI sy-vline 
WA_PC29V_STR-VSPEE sy-vline 
WA_PC29V_STR-VSPER sy-vline 
WA_PC29V_STR-SCRYY sy-vline 
WA_PC29V_STR-SCRMM sy-vline 
WA_PC29V_STR-SCRDD sy-vline 
WA_PC29V_STR-EEAGE sy-vline 
WA_PC29V_STR-SCALC sy-vline 
WA_PC29V_STR-ENTW2 sy-vline 
WA_PC29V_STR-ENTW3 sy-vline 
WA_PC29V_STR-ENTW4 sy-vline 
WA_PC29V_STR-ENTOF sy-vline 
WA_PC29V_STR-REWTY sy-vline      INTO ld_text SEPARATED BY SPACE.

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