ABAP Select data from SAP table VV_T7MX12_CHI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VV_T7MX12_CHI 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 VV_T7MX12_CHI. 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 VV_T7MX12_CHI 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_VV_T7MX12_CHI TYPE STANDARD TABLE OF VV_T7MX12_CHI,
      WA_VV_T7MX12_CHI TYPE VV_T7MX12_CHI,
      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: <VV_T7MX12_CHI> TYPE VV_T7MX12_CHI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VV_T7MX12_CHI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VV_T7MX12_CHI
  INTO TABLE IT_VV_T7MX12_CHI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VV_T7MX12_CHI
*  INTO TABLE @DATA(IT_VV_T7MX12_CHI2).
*--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_VV_T7MX12_CHI INDEX 1 INTO DATA(WA_VV_T7MX12_CHI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VV_T7MX12_CHI ASSIGNING <VV_T7MX12_CHI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VV_T7MX12_CHI>-MANDT = 1.
<VV_T7MX12_CHI>-CLTAB = 1.
<VV_T7MX12_CHI>-LISUP = 1.
<VV_T7MX12_CHI>-ENDDA = 1.
<VV_T7MX12_CHI>-BEGDA = 1.

ENDLOOP.

LOOP AT IT_VV_T7MX12_CHI INTO WA_VV_T7MX12_CHI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VV_T7MX12_CHI-LIINF, sy-vline,
  WA_VV_T7MX12_CHI-CUFIJ, sy-vline,
  WA_VV_T7MX12_CHI-POEXC, sy-vline,
  WA_VV_T7MX12_CHI-WAERS, sy-vline,
  WA_VV_T7MX12_CHI-TCLTB, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_VV_T7MX12_CHI 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_VV_T7MX12_CHI 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_VV_T7MX12_CHI INTO WA_VV_T7MX12_CHI.


*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_VV_T7MX12_CHI_STR, 
MANDT TYPE STRING,
CLTAB TYPE STRING,
LISUP TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
LIINF TYPE STRING,
CUFIJ TYPE STRING,
POEXC TYPE STRING,
WAERS TYPE STRING,
TCLTB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VV_T7MX12_CHI_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_VV_T7MX12_CHI_STR-MANDT sy-vline 
WA_VV_T7MX12_CHI_STR-CLTAB sy-vline 
WA_VV_T7MX12_CHI_STR-LISUP sy-vline 
WA_VV_T7MX12_CHI_STR-ENDDA sy-vline 
WA_VV_T7MX12_CHI_STR-BEGDA sy-vline 
WA_VV_T7MX12_CHI_STR-LIINF sy-vline 
WA_VV_T7MX12_CHI_STR-CUFIJ sy-vline 
WA_VV_T7MX12_CHI_STR-POEXC sy-vline 
WA_VV_T7MX12_CHI_STR-WAERS sy-vline 
WA_VV_T7MX12_CHI_STR-TCLTB sy-vline      INTO ld_text SEPARATED BY SPACE.

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