ABAP Select data from SAP table PC29F into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PC29F 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 PC29F. 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 PC29F 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_PC29F TYPE STANDARD TABLE OF PC29F,
      WA_PC29F TYPE PC29F,
      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: <PC29F> TYPE PC29F.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PC29F.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PC29F
  INTO TABLE IT_PC29F.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PC29F
*  INTO TABLE @DATA(IT_PC29F2).
*--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_PC29F INDEX 1 INTO DATA(WA_PC29F2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PC29F ASSIGNING <PC29F>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PC29F>-IONUM = 1.
<PC29F>-OBJPS = 1.
<PC29F>-DBCOD = 1.
<PC29F>-LGART = 1.
<PC29F>-DBCAT = 1.

ENDLOOP.

LOOP AT IT_PC29F INTO WA_PC29F.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PC29F-CRCOD, sy-vline,
  WA_PC29F-CRSPY, sy-vline,
  WA_PC29F-CRARR, sy-vline,
  WA_PC29F-INSID, sy-vline,
  WA_PC29F-IDBAL, sy-vline,
  WA_PC29F-IDOPA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PC29F 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_PC29F 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_PC29F INTO WA_PC29F.


*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_PC29F_STR, 
IONUM TYPE STRING,
OBJPS TYPE STRING,
DBCOD TYPE STRING,
LGART TYPE STRING,
DBCAT TYPE STRING,
CRCOD TYPE STRING,
CRSPY TYPE STRING,
CRARR TYPE STRING,
INSID TYPE STRING,
IDBAL TYPE STRING,
IDOPA TYPE STRING,
IDOPU TYPE STRING,
ABPAY TYPE STRING,
ABREM TYPE STRING,
ACPRP TYPE STRING,
AMTOD TYPE STRING,
AYTOD TYPE STRING,
ATTOD TYPE STRING,
DMTOD TYPE STRING,
DMTDL TYPE STRING,
DMAIN TYPE STRING,
DARRS TYPE STRING,
AREQR TYPE STRING,
APNOW TYPE STRING,
APPRE TYPE STRING,
APADD TYPE STRING,
APNXM TYPE STRING,
APVEN TYPE STRING,
GCURR TYPE STRING,
GCPRP TYPE STRING,
GMTOD TYPE STRING,
NCURR TYPE STRING,
NCPRP TYPE STRING,
NMTOD TYPE STRING,
XCURR TYPE STRING,
XXTND TYPE STRING,
NXUNA TYPE STRING,
IGRNP TYPE STRING,
REPRI TYPE STRING,
RECSE TYPE STRING,
RESID TYPE STRING,
REWID TYPE STRING,
TCPRP TYPE STRING,
TMTOD TYPE STRING,
EXPNT TYPE STRING,
HISTORIC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PC29F_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_PC29F_STR-IONUM sy-vline 
WA_PC29F_STR-OBJPS sy-vline 
WA_PC29F_STR-DBCOD sy-vline 
WA_PC29F_STR-LGART sy-vline 
WA_PC29F_STR-DBCAT sy-vline 
WA_PC29F_STR-CRCOD sy-vline 
WA_PC29F_STR-CRSPY sy-vline 
WA_PC29F_STR-CRARR sy-vline 
WA_PC29F_STR-INSID sy-vline 
WA_PC29F_STR-IDBAL sy-vline 
WA_PC29F_STR-IDOPA sy-vline 
WA_PC29F_STR-IDOPU sy-vline 
WA_PC29F_STR-ABPAY sy-vline 
WA_PC29F_STR-ABREM sy-vline 
WA_PC29F_STR-ACPRP sy-vline 
WA_PC29F_STR-AMTOD sy-vline 
WA_PC29F_STR-AYTOD sy-vline 
WA_PC29F_STR-ATTOD sy-vline 
WA_PC29F_STR-DMTOD sy-vline 
WA_PC29F_STR-DMTDL sy-vline 
WA_PC29F_STR-DMAIN sy-vline 
WA_PC29F_STR-DARRS sy-vline 
WA_PC29F_STR-AREQR sy-vline 
WA_PC29F_STR-APNOW sy-vline 
WA_PC29F_STR-APPRE sy-vline 
WA_PC29F_STR-APADD sy-vline 
WA_PC29F_STR-APNXM sy-vline 
WA_PC29F_STR-APVEN sy-vline 
WA_PC29F_STR-GCURR sy-vline 
WA_PC29F_STR-GCPRP sy-vline 
WA_PC29F_STR-GMTOD sy-vline 
WA_PC29F_STR-NCURR sy-vline 
WA_PC29F_STR-NCPRP sy-vline 
WA_PC29F_STR-NMTOD sy-vline 
WA_PC29F_STR-XCURR sy-vline 
WA_PC29F_STR-XXTND sy-vline 
WA_PC29F_STR-NXUNA sy-vline 
WA_PC29F_STR-IGRNP sy-vline 
WA_PC29F_STR-REPRI sy-vline 
WA_PC29F_STR-RECSE sy-vline 
WA_PC29F_STR-RESID sy-vline 
WA_PC29F_STR-REWID sy-vline 
WA_PC29F_STR-TCPRP sy-vline 
WA_PC29F_STR-TMTOD sy-vline 
WA_PC29F_STR-EXPNT sy-vline 
WA_PC29F_STR-HISTORIC sy-vline      INTO ld_text SEPARATED BY SPACE.

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