ABAP Select data from SAP table V_T7INF1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T7INF1 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_T7INF1. 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_T7INF1 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_T7INF1 TYPE STANDARD TABLE OF V_T7INF1,
      WA_V_T7INF1 TYPE V_T7INF1,
      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_T7INF1> TYPE V_T7INF1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T7INF1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T7INF1
  INTO TABLE IT_V_T7INF1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T7INF1
*  INTO TABLE @DATA(IT_V_T7INF12).
*--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_T7INF1 INDEX 1 INTO DATA(WA_V_T7INF12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T7INF1 ASSIGNING <V_T7INF1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T7INF1>-MANDT = 1.
<V_T7INF1>-TSTID = 1.
<V_T7INF1>-TSTTX = 1.
<V_T7INF1>-TSTTY = 1.
<V_T7INF1>-TSTAD = 1.

ENDLOOP.

LOOP AT IT_V_T7INF1 INTO WA_V_T7INF1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T7INF1-EEPFC, sy-vline,
  WA_V_T7INF1-EEVPF, sy-vline,
  WA_V_T7INF1-ERPFC, sy-vline,
  WA_V_T7INF1-ERPNC, sy-vline,
  WA_V_T7INF1-EDLIC, sy-vline,
  WA_V_T7INF1-EDLIA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T7INF1 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_T7INF1 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_T7INF1 INTO WA_V_T7INF1.


*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 TSTAD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_T7INF1-TSTAD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T7INF1-TSTAD.
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_V_T7INF1_STR, 
MANDT TYPE STRING,
TSTID TYPE STRING,
TSTTX TYPE STRING,
TSTTY TYPE STRING,
TSTAD TYPE STRING,
EEPFC TYPE STRING,
EEVPF TYPE STRING,
ERPFC TYPE STRING,
ERPNC TYPE STRING,
EDLIC TYPE STRING,
EDLIA TYPE STRING,
PFADM TYPE STRING,
EPGCR TYPE STRING,
GVPFW TYPE STRING,
GVPNW TYPE STRING,
TTPFW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T7INF1_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_T7INF1_STR-MANDT sy-vline 
WA_V_T7INF1_STR-TSTID sy-vline 
WA_V_T7INF1_STR-TSTTX sy-vline 
WA_V_T7INF1_STR-TSTTY sy-vline 
WA_V_T7INF1_STR-TSTAD sy-vline 
WA_V_T7INF1_STR-EEPFC sy-vline 
WA_V_T7INF1_STR-EEVPF sy-vline 
WA_V_T7INF1_STR-ERPFC sy-vline 
WA_V_T7INF1_STR-ERPNC sy-vline 
WA_V_T7INF1_STR-EDLIC sy-vline 
WA_V_T7INF1_STR-EDLIA sy-vline 
WA_V_T7INF1_STR-PFADM sy-vline 
WA_V_T7INF1_STR-EPGCR sy-vline 
WA_V_T7INF1_STR-GVPFW sy-vline 
WA_V_T7INF1_STR-GVPNW sy-vline 
WA_V_T7INF1_STR-TTPFW sy-vline      INTO ld_text SEPARATED BY SPACE.

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