ABAP Select data from SAP table PAMODC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAMODC
*  INTO TABLE @DATA(IT_PAMODC2).
*--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_PAMODC INDEX 1 INTO DATA(WA_PAMODC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PAMODC>-MANDT = 1.
<PAMODC>-PAGUID = 1.
<PAMODC>-PAMDCNT = 1.
<PAMODC>-PAMCCNT = 1.
<PAMODC>-PNGUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PAMODC-RESUID, sy-vline,
  WA_PAMODC-UNITC, sy-vline,
  WA_PAMODC-CRQVAR, sy-vline,
  WA_PAMODC-CRQFIX, sy-vline,
  WA_PAMODC-CAPREQ, sy-vline,
  WA_PAMODC-CAPREQFIX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PAMODC 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_PAMODC 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_PAMODC INTO WA_PAMODC.


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

*Conversion exit CUNIT, internal->external for field BUCKETUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PAMODC-BUCKETUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PAMODC-BUCKETUNIT.
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_PAMODC_STR, 
MANDT TYPE STRING,
PAGUID TYPE STRING,
PAMDCNT TYPE STRING,
PAMCCNT TYPE STRING,
PNGUID TYPE STRING,
RESUID TYPE STRING,
UNITC TYPE STRING,
CRQVAR TYPE STRING,
CRQFIX TYPE STRING,
CAPREQ TYPE STRING,
CAPREQFIX TYPE STRING,
SETCALE TYPE STRING,
BUCKETVAR TYPE STRING,
BUCKETFIX TYPE STRING,
BUCKETUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAMODC_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_PAMODC_STR-MANDT sy-vline 
WA_PAMODC_STR-PAGUID sy-vline 
WA_PAMODC_STR-PAMDCNT sy-vline 
WA_PAMODC_STR-PAMCCNT sy-vline 
WA_PAMODC_STR-PNGUID sy-vline 
WA_PAMODC_STR-RESUID sy-vline 
WA_PAMODC_STR-UNITC sy-vline 
WA_PAMODC_STR-CRQVAR sy-vline 
WA_PAMODC_STR-CRQFIX sy-vline 
WA_PAMODC_STR-CAPREQ sy-vline 
WA_PAMODC_STR-CAPREQFIX sy-vline 
WA_PAMODC_STR-SETCALE sy-vline 
WA_PAMODC_STR-BUCKETVAR sy-vline 
WA_PAMODC_STR-BUCKETFIX sy-vline 
WA_PAMODC_STR-BUCKETUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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