ABAP Select data from SAP table PPEGIARCH_CMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPEGIARCH_CMP
*  INTO TABLE @DATA(IT_PPEGIARCH_CMP2).
*--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_PPEGIARCH_CMP INDEX 1 INTO DATA(WA_PPEGIARCH_CMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPEGIARCH_CMP>-AENNR = 1.
<PPEGIARCH_CMP>-TEXT = 1.
<PPEGIARCH_CMP>-CLASS = 1.
<PPEGIARCH_CMP>-KLART = 1.
<PPEGIARCH_CMP>-CMPEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPEGIARCH_CMP-DEPENDENCY, sy-vline,
  WA_PPEGIARCH_CMP-QUANT, sy-vline,
  WA_PPEGIARCH_CMP-QUNIT, sy-vline,
  WA_PPEGIARCH_CMP-CREABY, sy-vline,
  WA_PPEGIARCH_CMP-CREADAT, sy-vline,
  WA_PPEGIARCH_CMP-CHNGBY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPEGIARCH_CMP 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_PPEGIARCH_CMP 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_PPEGIARCH_CMP INTO WA_PPEGIARCH_CMP.


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

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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPEGIARCH_CMP-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPEGIARCH_CMP-LOGSYS.
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_PPEGIARCH_CMP_STR, 
AENNR TYPE STRING,
TEXT TYPE STRING,
CLASS TYPE STRING,
KLART TYPE STRING,
CMPEXT TYPE STRING,
DEPENDENCY TYPE STRING,
QUANT TYPE STRING,
QUNIT TYPE STRING,
CREABY TYPE STRING,
CREADAT TYPE STRING,
CHNGBY TYPE STRING,
CHNGDAT TYPE STRING,
ARCHBY TYPE STRING,
ARCHDAT TYPE STRING,
ARCHTIME TYPE STRING,
DELFLG TYPE STRING,
MANDT TYPE STRING,
LOGSYS TYPE STRING,
ICON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPEGIARCH_CMP_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_PPEGIARCH_CMP_STR-AENNR sy-vline 
WA_PPEGIARCH_CMP_STR-TEXT sy-vline 
WA_PPEGIARCH_CMP_STR-CLASS sy-vline 
WA_PPEGIARCH_CMP_STR-KLART sy-vline 
WA_PPEGIARCH_CMP_STR-CMPEXT sy-vline 
WA_PPEGIARCH_CMP_STR-DEPENDENCY sy-vline 
WA_PPEGIARCH_CMP_STR-QUANT sy-vline 
WA_PPEGIARCH_CMP_STR-QUNIT sy-vline 
WA_PPEGIARCH_CMP_STR-CREABY sy-vline 
WA_PPEGIARCH_CMP_STR-CREADAT sy-vline 
WA_PPEGIARCH_CMP_STR-CHNGBY sy-vline 
WA_PPEGIARCH_CMP_STR-CHNGDAT sy-vline 
WA_PPEGIARCH_CMP_STR-ARCHBY sy-vline 
WA_PPEGIARCH_CMP_STR-ARCHDAT sy-vline 
WA_PPEGIARCH_CMP_STR-ARCHTIME sy-vline 
WA_PPEGIARCH_CMP_STR-DELFLG sy-vline 
WA_PPEGIARCH_CMP_STR-MANDT sy-vline 
WA_PPEGIARCH_CMP_STR-LOGSYS sy-vline 
WA_PPEGIARCH_CMP_STR-ICON sy-vline      INTO ld_text SEPARATED BY SPACE.

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