ABAP Select data from SAP table T7INPEWA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7INPEWA 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 T7INPEWA. 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 T7INPEWA 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_T7INPEWA TYPE STANDARD TABLE OF T7INPEWA,
      WA_T7INPEWA TYPE T7INPEWA,
      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: <T7INPEWA> TYPE T7INPEWA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7INPEWA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7INPEWA
  INTO TABLE IT_T7INPEWA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7INPEWA
*  INTO TABLE @DATA(IT_T7INPEWA2).
*--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_T7INPEWA INDEX 1 INTO DATA(WA_T7INPEWA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7INPEWA ASSIGNING <T7INPEWA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7INPEWA>-MANDT = 1.
<T7INPEWA>-REGUI = 1.
<T7INPEWA>-POGUI = 1.
<T7INPEWA>-VERSN = 1.
<T7INPEWA>-STPID = 1.

ENDLOOP.

LOOP AT IT_T7INPEWA INTO WA_T7INPEWA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7INPEWA-PERNR, sy-vline,
  WA_T7INPEWA-SEQNR, sy-vline,
  WA_T7INPEWA-WFLEV, sy-vline,
  WA_T7INPEWA-ESLEV, sy-vline,
  WA_T7INPEWA-AGENT, sy-vline,
  WA_T7INPEWA-WI_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7INPEWA 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_T7INPEWA 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_T7INPEWA INTO WA_T7INPEWA.


*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_T7INPEWA_STR, 
MANDT TYPE STRING,
REGUI TYPE STRING,
POGUI TYPE STRING,
VERSN TYPE STRING,
STPID TYPE STRING,
PERNR TYPE STRING,
SEQNR TYPE STRING,
WFLEV TYPE STRING,
ESLEV TYPE STRING,
AGENT TYPE STRING,
WI_ID TYPE STRING,
REMNO TYPE STRING,
RMDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7INPEWA_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_T7INPEWA_STR-MANDT sy-vline 
WA_T7INPEWA_STR-REGUI sy-vline 
WA_T7INPEWA_STR-POGUI sy-vline 
WA_T7INPEWA_STR-VERSN sy-vline 
WA_T7INPEWA_STR-STPID sy-vline 
WA_T7INPEWA_STR-PERNR sy-vline 
WA_T7INPEWA_STR-SEQNR sy-vline 
WA_T7INPEWA_STR-WFLEV sy-vline 
WA_T7INPEWA_STR-ESLEV sy-vline 
WA_T7INPEWA_STR-AGENT sy-vline 
WA_T7INPEWA_STR-WI_ID sy-vline 
WA_T7INPEWA_STR-REMNO sy-vline 
WA_T7INPEWA_STR-RMDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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