ABAP Select data from SAP table WTYV_IMRG_DIA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WTYV_IMRG_DIA
*  INTO TABLE @DATA(IT_WTYV_IMRG_DIA2).
*--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_WTYV_IMRG_DIA INDEX 1 INTO DATA(WA_WTYV_IMRG_DIA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WTYV_IMRG_DIA>-MANDT = 1.
<WTYV_IMRG_DIA>-PNGUID = 1.
<WTYV_IMRG_DIA>-PNCNT = 1.
<WTYV_IMRG_DIA>-V_MDOCM = 1.
<WTYV_IMRG_DIA>-VERSN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WTYV_IMRG_DIA-V_DISTANCE, sy-vline,
  WA_WTYV_IMRG_DIA-V_D_UNIT, sy-vline,
  WA_WTYV_IMRG_DIA-H_MDOCM, sy-vline,
  WA_WTYV_IMRG_DIA-I_MDOCM, sy-vline,
  WA_WTYV_IMRG_DIA-V_MEASURE_POINT, sy-vline,
  WA_WTYV_IMRG_DIA-LF_FLAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WTYV_IMRG_DIA 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_WTYV_IMRG_DIA 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_WTYV_IMRG_DIA INTO WA_WTYV_IMRG_DIA.


*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 LUNIT, internal->external for field LAST_MEASUREM_UNIT
CALL FUNCTION 'CONVERSION_EXIT_LUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WTYV_IMRG_DIA-LAST_MEASUREM_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTYV_IMRG_DIA-LAST_MEASUREM_UNIT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MSEHI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WTYV_IMRG_DIA-MSEHI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTYV_IMRG_DIA-MSEHI.
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_WTYV_IMRG_DIA_STR, 
MANDT TYPE STRING,
PNGUID TYPE STRING,
PNCNT TYPE STRING,
V_MDOCM TYPE STRING,
VERSN TYPE STRING,
V_DISTANCE TYPE STRING,
V_D_UNIT TYPE STRING,
H_MDOCM TYPE STRING,
I_MDOCM TYPE STRING,
V_MEASURE_POINT TYPE STRING,
LF_FLAG TYPE STRING,
LAST_MEASUREMENT TYPE STRING,
LAST_MEASUREM_UNIT TYPE STRING,
BLART_R TYPE STRING,
BLART_P TYPE STRING,
LAND1 TYPE STRING,
ORT01 TYPE STRING,
NAME1 TYPE STRING,
V_CREADAT TYPE STRING,
V_CREABY TYPE STRING,
V_CHNGDAT TYPE STRING,
V_CHNGBY TYPE STRING,
V_MDOCM_OLD TYPE STRING,
POINT TYPE STRING,
PSORT TYPE STRING,
PTTXT TYPE STRING,
CNSPT_REL TYPE STRING,
DIST_FLAG TYPE STRING,
TIME_FLAG TYPE STRING,
REPLC_REL TYPE STRING,
RECNT TYPE STRING,
DECIM TYPE STRING,
MSEHI TYPE STRING,
MSEH6 TYPE STRING,
LCNTC TYPE STRING,
DATE TYPE STRING,
TIME TYPE STRING,
UNITC TYPE STRING,
EXPON TYPE STRING,
SELECT_DATE TYPE STRING,
SELECT_TIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WTYV_IMRG_DIA_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_WTYV_IMRG_DIA_STR-MANDT sy-vline 
WA_WTYV_IMRG_DIA_STR-PNGUID sy-vline 
WA_WTYV_IMRG_DIA_STR-PNCNT sy-vline 
WA_WTYV_IMRG_DIA_STR-V_MDOCM sy-vline 
WA_WTYV_IMRG_DIA_STR-VERSN sy-vline 
WA_WTYV_IMRG_DIA_STR-V_DISTANCE sy-vline 
WA_WTYV_IMRG_DIA_STR-V_D_UNIT sy-vline 
WA_WTYV_IMRG_DIA_STR-H_MDOCM sy-vline 
WA_WTYV_IMRG_DIA_STR-I_MDOCM sy-vline 
WA_WTYV_IMRG_DIA_STR-V_MEASURE_POINT sy-vline 
WA_WTYV_IMRG_DIA_STR-LF_FLAG sy-vline 
WA_WTYV_IMRG_DIA_STR-LAST_MEASUREMENT sy-vline 
WA_WTYV_IMRG_DIA_STR-LAST_MEASUREM_UNIT sy-vline 
WA_WTYV_IMRG_DIA_STR-BLART_R sy-vline 
WA_WTYV_IMRG_DIA_STR-BLART_P sy-vline 
WA_WTYV_IMRG_DIA_STR-LAND1 sy-vline 
WA_WTYV_IMRG_DIA_STR-ORT01 sy-vline 
WA_WTYV_IMRG_DIA_STR-NAME1 sy-vline 
WA_WTYV_IMRG_DIA_STR-V_CREADAT sy-vline 
WA_WTYV_IMRG_DIA_STR-V_CREABY sy-vline 
WA_WTYV_IMRG_DIA_STR-V_CHNGDAT sy-vline 
WA_WTYV_IMRG_DIA_STR-V_CHNGBY sy-vline 
WA_WTYV_IMRG_DIA_STR-V_MDOCM_OLD sy-vline 
WA_WTYV_IMRG_DIA_STR-POINT sy-vline 
WA_WTYV_IMRG_DIA_STR-PSORT sy-vline 
WA_WTYV_IMRG_DIA_STR-PTTXT sy-vline 
WA_WTYV_IMRG_DIA_STR-CNSPT_REL sy-vline 
WA_WTYV_IMRG_DIA_STR-DIST_FLAG sy-vline 
WA_WTYV_IMRG_DIA_STR-TIME_FLAG sy-vline 
WA_WTYV_IMRG_DIA_STR-REPLC_REL sy-vline 
WA_WTYV_IMRG_DIA_STR-RECNT sy-vline 
WA_WTYV_IMRG_DIA_STR-DECIM sy-vline 
WA_WTYV_IMRG_DIA_STR-MSEHI sy-vline 
WA_WTYV_IMRG_DIA_STR-MSEH6 sy-vline 
WA_WTYV_IMRG_DIA_STR-LCNTC sy-vline 
WA_WTYV_IMRG_DIA_STR-DATE sy-vline 
WA_WTYV_IMRG_DIA_STR-TIME sy-vline 
WA_WTYV_IMRG_DIA_STR-UNITC sy-vline 
WA_WTYV_IMRG_DIA_STR-EXPON sy-vline 
WA_WTYV_IMRG_DIA_STR-SELECT_DATE sy-vline 
WA_WTYV_IMRG_DIA_STR-SELECT_TIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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