ABAP Select data from SAP table V_T7HK2B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T7HK2B 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 V_T7HK2B. 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 V_T7HK2B 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_V_T7HK2B TYPE STANDARD TABLE OF V_T7HK2B,
      WA_V_T7HK2B TYPE V_T7HK2B,
      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: <V_T7HK2B> TYPE V_T7HK2B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T7HK2B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T7HK2B
  INTO TABLE IT_V_T7HK2B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T7HK2B
*  INTO TABLE @DATA(IT_V_T7HK2B2).
*--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_V_T7HK2B INDEX 1 INTO DATA(WA_V_T7HK2B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T7HK2B ASSIGNING <V_T7HK2B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T7HK2B>-MANDT = 1.
<V_T7HK2B>-CONTP = 1.
<V_T7HK2B>-ENDDA = 1.
<V_T7HK2B>-BEGDA = 1.
<V_T7HK2B>-PLNNM = 1.

ENDLOOP.

LOOP AT IT_V_T7HK2B INTO WA_V_T7HK2B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T7HK2B-PROVR, sy-vline,
  WA_V_T7HK2B-PRVNM, sy-vline,
  WA_V_T7HK2B-PLANO, sy-vline,
  WA_V_T7HK2B-EEMWT, sy-vline,
  WA_V_T7HK2B-LGTXT, sy-vline,
  WA_V_T7HK2B-EENWT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T7HK2B 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_V_T7HK2B 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_V_T7HK2B INTO WA_V_T7HK2B.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_V_T7HK2B_STR, 
MANDT TYPE STRING,
CONTP TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
PLNNM TYPE STRING,
PROVR TYPE STRING,
PRVNM TYPE STRING,
PLANO TYPE STRING,
EEMWT TYPE STRING,
LGTXT TYPE STRING,
EENWT TYPE STRING,
LGTX2 TYPE STRING,
ERNWT TYPE STRING,
LGTX3 TYPE STRING,
ERMWT TYPE STRING,
LGTX4 TYPE STRING,
SALWT TYPE STRING,
LGTX5 TYPE STRING,
SCALC TYPE STRING,
FTYPE TYPE STRING,
FTEXT TYPE STRING,
CUMTY TYPE STRING,
LTEXT TYPE STRING,
PLSTA TYPE STRING,
PRVER TYPE STRING,
PRECB TYPE STRING,
PREWT TYPE STRING,
LGTX6 TYPE STRING,
STEXT TYPE STRING,
STXT2 TYPE STRING,
CMTHD TYPE STRING,
VCAMA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T7HK2B_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_V_T7HK2B_STR-MANDT sy-vline 
WA_V_T7HK2B_STR-CONTP sy-vline 
WA_V_T7HK2B_STR-ENDDA sy-vline 
WA_V_T7HK2B_STR-BEGDA sy-vline 
WA_V_T7HK2B_STR-PLNNM sy-vline 
WA_V_T7HK2B_STR-PROVR sy-vline 
WA_V_T7HK2B_STR-PRVNM sy-vline 
WA_V_T7HK2B_STR-PLANO sy-vline 
WA_V_T7HK2B_STR-EEMWT sy-vline 
WA_V_T7HK2B_STR-LGTXT sy-vline 
WA_V_T7HK2B_STR-EENWT sy-vline 
WA_V_T7HK2B_STR-LGTX2 sy-vline 
WA_V_T7HK2B_STR-ERNWT sy-vline 
WA_V_T7HK2B_STR-LGTX3 sy-vline 
WA_V_T7HK2B_STR-ERMWT sy-vline 
WA_V_T7HK2B_STR-LGTX4 sy-vline 
WA_V_T7HK2B_STR-SALWT sy-vline 
WA_V_T7HK2B_STR-LGTX5 sy-vline 
WA_V_T7HK2B_STR-SCALC sy-vline 
WA_V_T7HK2B_STR-FTYPE sy-vline 
WA_V_T7HK2B_STR-FTEXT sy-vline 
WA_V_T7HK2B_STR-CUMTY sy-vline 
WA_V_T7HK2B_STR-LTEXT sy-vline 
WA_V_T7HK2B_STR-PLSTA sy-vline 
WA_V_T7HK2B_STR-PRVER sy-vline 
WA_V_T7HK2B_STR-PRECB sy-vline 
WA_V_T7HK2B_STR-PREWT sy-vline 
WA_V_T7HK2B_STR-LGTX6 sy-vline 
WA_V_T7HK2B_STR-STEXT sy-vline 
WA_V_T7HK2B_STR-STXT2 sy-vline 
WA_V_T7HK2B_STR-CMTHD sy-vline 
WA_V_T7HK2B_STR-VCAMA sy-vline      INTO ld_text SEPARATED BY SPACE.

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