ABAP Select data from SAP table WCS_SP_WCMOBJ_CERTIF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCS_SP_WCMOBJ_CERTIF
*  INTO TABLE @DATA(IT_WCS_SP_WCMOBJ_CERTIF2).
*--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_WCS_SP_WCMOBJ_CERTIF INDEX 1 INTO DATA(WA_WCS_SP_WCMOBJ_CERTIF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCS_SP_WCMOBJ_CERTIF>-WCNR = 1.
<WCS_SP_WCMOBJ_CERTIF>-WCUSE = 1.
<WCS_SP_WCMOBJ_CERTIF>-WCUSE_TEXT = 1.
<WCS_SP_WCMOBJ_CERTIF>-OBJNR = 1.
<WCS_SP_WCMOBJ_CERTIF>-STXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCS_SP_WCMOBJ_CERTIF-PRIOK, sy-vline,
  WA_WCS_SP_WCMOBJ_CERTIF-PRIOK_TEXT, sy-vline,
  WA_WCS_SP_WCMOBJ_CERTIF-DATEFR, sy-vline,
  WA_WCS_SP_WCMOBJ_CERTIF-TIMEFR, sy-vline,
  WA_WCS_SP_WCMOBJ_CERTIF-DATETO, sy-vline,
  WA_WCS_SP_WCMOBJ_CERTIF-TIMETO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCS_SP_WCMOBJ_CERTIF 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_WCS_SP_WCMOBJ_CERTIF 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_WCS_SP_WCMOBJ_CERTIF INTO WA_WCS_SP_WCMOBJ_CERTIF.


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

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_WCS_SP_WCMOBJ_CERTIF-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCS_SP_WCMOBJ_CERTIF-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EAMS_EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WCS_SP_WCMOBJ_CERTIF-EAMS_EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCS_SP_WCMOBJ_CERTIF-EAMS_EQUNR.
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_WCS_SP_WCMOBJ_CERTIF_STR, 
WCNR TYPE STRING,
WCUSE TYPE STRING,
WCUSE_TEXT TYPE STRING,
OBJNR TYPE STRING,
STXT TYPE STRING,
PRIOK TYPE STRING,
PRIOK_TEXT TYPE STRING,
DATEFR TYPE STRING,
TIMEFR TYPE STRING,
DATETO TYPE STRING,
TIMETO TYPE STRING,
CRNAME TYPE STRING,
CRDATE TYPE STRING,
CRTIME TYPE STRING,
CHNAME TYPE STRING,
CHDATE TYPE STRING,
CHTIME TYPE STRING,
SYSSTFLG TYPE STRING,
CREA TYPE STRING,
PREP TYPE STRING,
CHGN TYPE STRING,
PWP TYPE STRING,
WPHO TYPE STRING,
CLSD TYPE STRING,
REJC TYPE STRING,
INAK TYPE STRING,
DLFL TYPE STRING,
PROC TYPE STRING,
CONF TYPE STRING,
UNT TYPE STRING,
TEST TYPE STRING,
ITG TYPE STRING,
BTG TYPE STRING,
PTAG TYPE STRING,
ETG TYPE STRING,
BTUG TYPE STRING,
PTST TYPE STRING,
ETUG TYPE STRING,
BUG TYPE STRING,
EUG TYPE STRING,
MOBI TYPE STRING,
SYSST TYPE STRING,
USRST TYPE STRING,
TLCNT_ICON TYPE STRING,
TLCNT_TEXT TYPE STRING,
EAMS_TEC_OBJ_TYPE TYPE STRING,
EAMS_TEC_OBJ_NO TYPE STRING,
EAMS_TEC_OBJ_TYPE_TXT TYPE STRING,
EAMS_TEC_OBJ_TEXT TYPE STRING,
TPLNR TYPE STRING,
EAMS_EQUNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCS_SP_WCMOBJ_CERTIF_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_WCS_SP_WCMOBJ_CERTIF_STR-WCNR sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-WCUSE sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-WCUSE_TEXT sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-OBJNR sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-STXT sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-PRIOK sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-PRIOK_TEXT sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-DATEFR sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-TIMEFR sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-DATETO sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-TIMETO sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-CRNAME sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-CRDATE sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-CRTIME sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-CHNAME sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-CHDATE sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-CHTIME sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-SYSSTFLG sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-CREA sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-PREP sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-CHGN sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-PWP sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-WPHO sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-CLSD sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-REJC sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-INAK sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-DLFL sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-PROC sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-CONF sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-UNT sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-TEST sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-ITG sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-BTG sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-PTAG sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-ETG sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-BTUG sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-PTST sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-ETUG sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-BUG sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-EUG sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-MOBI sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-SYSST sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-USRST sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-TLCNT_ICON sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-TLCNT_TEXT sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-EAMS_TEC_OBJ_TYPE sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-EAMS_TEC_OBJ_NO sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-EAMS_TEC_OBJ_TYPE_TXT sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-EAMS_TEC_OBJ_TEXT sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-TPLNR sy-vline 
WA_WCS_SP_WCMOBJ_CERTIF_STR-EAMS_EQUNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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