ABAP Select data from SAP table PFOCID_DIAG_NX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PFOCID_DIAG_NX
*  INTO TABLE @DATA(IT_PFOCID_DIAG_NX2).
*--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_PFOCID_DIAG_NX INDEX 1 INTO DATA(WA_PFOCID_DIAG_NX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PFOCID_DIAG_NX>-DIAG1_ICON = 1.
<PFOCID_DIAG_NX>-DIAG2_ICON = 1.
<PFOCID_DIAG_NX>-IPPE_ICON = 1.
<PFOCID_DIAG_NX>-FOC_GUID = 1.
<PFOCID_DIAG_NX>-FOC_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PFOCID_DIAG_NX-FOC_TEXT, sy-vline,
  WA_PFOCID_DIAG_NX-FOC_TYPE, sy-vline,
  WA_PFOCID_DIAG_NX-FOC_TYDESC, sy-vline,
  WA_PFOCID_DIAG_NX-FOC_PROC, sy-vline,
  WA_PFOCID_DIAG_NX-FOC_CONNECT, sy-vline,
  WA_PFOCID_DIAG_NX-FOC_DELFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PFOCID_DIAG_NX 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_PFOCID_DIAG_NX 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_PFOCID_DIAG_NX INTO WA_PFOCID_DIAG_NX.


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

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

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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PFOCID_DIAG_NX-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PFOCID_DIAG_NX-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_PFOCID_DIAG_NX_STR, 
DIAG1_ICON TYPE STRING,
DIAG2_ICON TYPE STRING,
IPPE_ICON TYPE STRING,
FOC_GUID TYPE STRING,
FOC_NAME TYPE STRING,
FOC_TEXT TYPE STRING,
FOC_TYPE TYPE STRING,
FOC_TYDESC TYPE STRING,
FOC_PROC TYPE STRING,
FOC_CONNECT TYPE STRING,
FOC_DELFLG TYPE STRING,
PNAME TYPE STRING,
PNTEXT TYPE STRING,
PAGUID TYPE STRING,
ALTNUM TYPE STRING,
PATEXT TYPE STRING,
MANDT TYPE STRING,
PNGUID TYPE STRING,
PNCNT TYPE STRING,
PNTXCNT TYPE STRING,
PVCMAND TYPE STRING,
PVCMULT TYPE STRING,
PVCFREE TYPE STRING,
PVCPRIO TYPE STRING,
REF_PNAME TYPE STRING,
REF_PVNAME TYPE STRING,
REF_AENNR TYPE STRING,
EXCL_FLAG TYPE STRING,
CREADAT TYPE STRING,
CREABY TYPE STRING,
CHNGDAT TYPE STRING,
CHNGBY TYPE STRING,
LOGSYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PFOCID_DIAG_NX_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_PFOCID_DIAG_NX_STR-DIAG1_ICON sy-vline 
WA_PFOCID_DIAG_NX_STR-DIAG2_ICON sy-vline 
WA_PFOCID_DIAG_NX_STR-IPPE_ICON sy-vline 
WA_PFOCID_DIAG_NX_STR-FOC_GUID sy-vline 
WA_PFOCID_DIAG_NX_STR-FOC_NAME sy-vline 
WA_PFOCID_DIAG_NX_STR-FOC_TEXT sy-vline 
WA_PFOCID_DIAG_NX_STR-FOC_TYPE sy-vline 
WA_PFOCID_DIAG_NX_STR-FOC_TYDESC sy-vline 
WA_PFOCID_DIAG_NX_STR-FOC_PROC sy-vline 
WA_PFOCID_DIAG_NX_STR-FOC_CONNECT sy-vline 
WA_PFOCID_DIAG_NX_STR-FOC_DELFLG sy-vline 
WA_PFOCID_DIAG_NX_STR-PNAME sy-vline 
WA_PFOCID_DIAG_NX_STR-PNTEXT sy-vline 
WA_PFOCID_DIAG_NX_STR-PAGUID sy-vline 
WA_PFOCID_DIAG_NX_STR-ALTNUM sy-vline 
WA_PFOCID_DIAG_NX_STR-PATEXT sy-vline 
WA_PFOCID_DIAG_NX_STR-MANDT sy-vline 
WA_PFOCID_DIAG_NX_STR-PNGUID sy-vline 
WA_PFOCID_DIAG_NX_STR-PNCNT sy-vline 
WA_PFOCID_DIAG_NX_STR-PNTXCNT sy-vline 
WA_PFOCID_DIAG_NX_STR-PVCMAND sy-vline 
WA_PFOCID_DIAG_NX_STR-PVCMULT sy-vline 
WA_PFOCID_DIAG_NX_STR-PVCFREE sy-vline 
WA_PFOCID_DIAG_NX_STR-PVCPRIO sy-vline 
WA_PFOCID_DIAG_NX_STR-REF_PNAME sy-vline 
WA_PFOCID_DIAG_NX_STR-REF_PVNAME sy-vline 
WA_PFOCID_DIAG_NX_STR-REF_AENNR sy-vline 
WA_PFOCID_DIAG_NX_STR-EXCL_FLAG sy-vline 
WA_PFOCID_DIAG_NX_STR-CREADAT sy-vline 
WA_PFOCID_DIAG_NX_STR-CREABY sy-vline 
WA_PFOCID_DIAG_NX_STR-CHNGDAT sy-vline 
WA_PFOCID_DIAG_NX_STR-CHNGBY sy-vline 
WA_PFOCID_DIAG_NX_STR-LOGSYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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