ABAP Select data from SAP table VCCIHT_IAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VCCIHT_IAL
*  INTO TABLE @DATA(IT_VCCIHT_IAL2).
*--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_VCCIHT_IAL INDEX 1 INTO DATA(WA_VCCIHT_IAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VCCIHT_IAL>-MANDT = 1.
<VCCIHT_IAL>-RECN = 1.
<VCCIHT_IAL>-ACTN = 1.
<VCCIHT_IAL>-VALFR = 1.
<VCCIHT_IAL>-VALTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VCCIHT_IAL-AENNR, sy-vline,
  WA_VCCIHT_IAL-DELFLG, sy-vline,
  WA_VCCIHT_IAL-PARKFLG, sy-vline,
  WA_VCCIHT_IAL-CRDAT, sy-vline,
  WA_VCCIHT_IAL-CRNAM, sy-vline,
  WA_VCCIHT_IAL-UPDDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VCCIHT_IAL 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_VCCIHT_IAL 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_VCCIHT_IAL INTO WA_VCCIHT_IAL.


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

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

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

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

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

*Conversion exit CHRID, internal->external for field IALID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_VCCIHT_IAL-IALID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VCCIHT_IAL-IALID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field MTNLANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_VCCIHT_IAL-MTNLANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VCCIHT_IAL-MTNLANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECNTWAH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VCCIHT_IAL-RECNTWAH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VCCIHT_IAL-RECNTWAH.
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_VCCIHT_IAL_STR, 
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
PARKFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
SRSID TYPE STRING,
OWNID TYPE STRING,
RECNROOT TYPE STRING,
IALID TYPE STRING,
IATYPE TYPE STRING,
IAPLANT TYPE STRING,
OBJNR TYPE STRING,
IASTATUS TYPE STRING,
EVDESC TYPE STRING,
DMTYPE TYPE STRING,
TPLNR TYPE STRING,
EQUNR TYPE STRING,
EQDESC TYPE STRING,
FATALFLG TYPE STRING,
CNTRFLG TYPE STRING,
INVRESULT TYPE STRING,
INVRESULTFLG TYPE STRING,
PMFLG TYPE STRING,
PRODLFLG TYPE STRING,
MTNLANGU TYPE STRING,
EVDAT TYPE STRING,
EVTIME TYPE STRING,
RECNTWAH TYPE STRING,
ACLOC TYPE STRING,
ACLOCDESC TYPE STRING,
EVTIMEZONE TYPE STRING,
IAREPHDFLG TYPE STRING,
FLPLANT TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VCCIHT_IAL_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_VCCIHT_IAL_STR-MANDT sy-vline 
WA_VCCIHT_IAL_STR-RECN sy-vline 
WA_VCCIHT_IAL_STR-ACTN sy-vline 
WA_VCCIHT_IAL_STR-VALFR sy-vline 
WA_VCCIHT_IAL_STR-VALTO sy-vline 
WA_VCCIHT_IAL_STR-AENNR sy-vline 
WA_VCCIHT_IAL_STR-DELFLG sy-vline 
WA_VCCIHT_IAL_STR-PARKFLG sy-vline 
WA_VCCIHT_IAL_STR-CRDAT sy-vline 
WA_VCCIHT_IAL_STR-CRNAM sy-vline 
WA_VCCIHT_IAL_STR-UPDDAT sy-vline 
WA_VCCIHT_IAL_STR-UPDNAM sy-vline 
WA_VCCIHT_IAL_STR-SRSID sy-vline 
WA_VCCIHT_IAL_STR-OWNID sy-vline 
WA_VCCIHT_IAL_STR-RECNROOT sy-vline 
WA_VCCIHT_IAL_STR-IALID sy-vline 
WA_VCCIHT_IAL_STR-IATYPE sy-vline 
WA_VCCIHT_IAL_STR-IAPLANT sy-vline 
WA_VCCIHT_IAL_STR-OBJNR sy-vline 
WA_VCCIHT_IAL_STR-IASTATUS sy-vline 
WA_VCCIHT_IAL_STR-EVDESC sy-vline 
WA_VCCIHT_IAL_STR-DMTYPE sy-vline 
WA_VCCIHT_IAL_STR-TPLNR sy-vline 
WA_VCCIHT_IAL_STR-EQUNR sy-vline 
WA_VCCIHT_IAL_STR-EQDESC sy-vline 
WA_VCCIHT_IAL_STR-FATALFLG sy-vline 
WA_VCCIHT_IAL_STR-CNTRFLG sy-vline 
WA_VCCIHT_IAL_STR-INVRESULT sy-vline 
WA_VCCIHT_IAL_STR-INVRESULTFLG sy-vline 
WA_VCCIHT_IAL_STR-PMFLG sy-vline 
WA_VCCIHT_IAL_STR-PRODLFLG sy-vline 
WA_VCCIHT_IAL_STR-MTNLANGU sy-vline 
WA_VCCIHT_IAL_STR-EVDAT sy-vline 
WA_VCCIHT_IAL_STR-EVTIME sy-vline 
WA_VCCIHT_IAL_STR-RECNTWAH sy-vline 
WA_VCCIHT_IAL_STR-ACLOC sy-vline 
WA_VCCIHT_IAL_STR-ACLOCDESC sy-vline 
WA_VCCIHT_IAL_STR-EVTIMEZONE sy-vline 
WA_VCCIHT_IAL_STR-IAREPHDFLG sy-vline 
WA_VCCIHT_IAL_STR-FLPLANT sy-vline 
WA_VCCIHT_IAL_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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