ABAP Select data from SAP table PPC_HEAD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPC_HEAD
*  INTO TABLE @DATA(IT_PPC_HEAD2).
*--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_PPC_HEAD INDEX 1 INTO DATA(WA_PPC_HEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPC_HEAD>-MANDT = 1.
<PPC_HEAD>-HEADID = 1.
<PPC_HEAD>-ORDERID = 1.
<PPC_HEAD>-ACCASSOBJ = 1.
<PPC_HEAD>-REPPOINT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPC_HEAD-CONFTIME, sy-vline,
  WA_PPC_HEAD-POSTDATE, sy-vline,
  WA_PPC_HEAD-CONFUNAME, sy-vline,
  WA_PPC_HEAD-CONFLOGSYS, sy-vline,
  WA_PPC_HEAD-CONFQUANT, sy-vline,
  WA_PPC_HEAD-CONFUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPC_HEAD 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_PPC_HEAD 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_PPC_HEAD INTO WA_PPC_HEAD.


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

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

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PPC_HEAD-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPC_HEAD-PSPNR.
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_PPC_HEAD_STR, 
MANDT TYPE STRING,
HEADID TYPE STRING,
ORDERID TYPE STRING,
ACCASSOBJ TYPE STRING,
REPPOINT TYPE STRING,
CONFTIME TYPE STRING,
POSTDATE TYPE STRING,
CONFUNAME TYPE STRING,
CONFLOGSYS TYPE STRING,
CONFQUANT TYPE STRING,
CONFUNIT TYPE STRING,
KZBWS TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PSPNR TYPE STRING,
FLG_SCRAP TYPE STRING,
FLG_DEL TYPE STRING,
FLG_SYNCH TYPE STRING,
FLG_ASYNCH TYPE STRING,
FLG_REVERSAL TYPE STRING,
FLG_GR_HEAD TYPE STRING,
FLG_INFO_DEST TYPE STRING,
FLG_BW_GI TYPE STRING,
FLG_BW_CONF TYPE STRING,
FLG_MAT_VAR TYPE STRING,
FLG_ACT_VAR TYPE STRING,
FLG_ASYNCH_A TYPE STRING,
CRTIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPC_HEAD_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_PPC_HEAD_STR-MANDT sy-vline 
WA_PPC_HEAD_STR-HEADID sy-vline 
WA_PPC_HEAD_STR-ORDERID sy-vline 
WA_PPC_HEAD_STR-ACCASSOBJ sy-vline 
WA_PPC_HEAD_STR-REPPOINT sy-vline 
WA_PPC_HEAD_STR-CONFTIME sy-vline 
WA_PPC_HEAD_STR-POSTDATE sy-vline 
WA_PPC_HEAD_STR-CONFUNAME sy-vline 
WA_PPC_HEAD_STR-CONFLOGSYS sy-vline 
WA_PPC_HEAD_STR-CONFQUANT sy-vline 
WA_PPC_HEAD_STR-CONFUNIT sy-vline 
WA_PPC_HEAD_STR-KZBWS sy-vline 
WA_PPC_HEAD_STR-KDAUF sy-vline 
WA_PPC_HEAD_STR-KDPOS sy-vline 
WA_PPC_HEAD_STR-PSPNR sy-vline 
WA_PPC_HEAD_STR-FLG_SCRAP sy-vline 
WA_PPC_HEAD_STR-FLG_DEL sy-vline 
WA_PPC_HEAD_STR-FLG_SYNCH sy-vline 
WA_PPC_HEAD_STR-FLG_ASYNCH sy-vline 
WA_PPC_HEAD_STR-FLG_REVERSAL sy-vline 
WA_PPC_HEAD_STR-FLG_GR_HEAD sy-vline 
WA_PPC_HEAD_STR-FLG_INFO_DEST sy-vline 
WA_PPC_HEAD_STR-FLG_BW_GI sy-vline 
WA_PPC_HEAD_STR-FLG_BW_CONF sy-vline 
WA_PPC_HEAD_STR-FLG_MAT_VAR sy-vline 
WA_PPC_HEAD_STR-FLG_ACT_VAR sy-vline 
WA_PPC_HEAD_STR-FLG_ASYNCH_A sy-vline 
WA_PPC_HEAD_STR-CRTIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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