ABAP Select data from SAP table T7EHS00_SERVA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7EHS00_SERVA 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 T7EHS00_SERVA. 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 T7EHS00_SERVA 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_T7EHS00_SERVA TYPE STANDARD TABLE OF T7EHS00_SERVA,
      WA_T7EHS00_SERVA TYPE T7EHS00_SERVA,
      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: <T7EHS00_SERVA> TYPE T7EHS00_SERVA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7EHS00_SERVA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7EHS00_SERVA
  INTO TABLE IT_T7EHS00_SERVA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7EHS00_SERVA
*  INTO TABLE @DATA(IT_T7EHS00_SERVA2).
*--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_T7EHS00_SERVA INDEX 1 INTO DATA(WA_T7EHS00_SERVA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7EHS00_SERVA ASSIGNING <T7EHS00_SERVA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7EHS00_SERVA>-MANDT = 1.
<T7EHS00_SERVA>-SRVNUMBER = 1.
<T7EHS00_SERVA>-SVONR = 1.
<T7EHS00_SERVA>-STP = 1.
<T7EHS00_SERVA>-STPTX = 1.

ENDLOOP.

LOOP AT IT_T7EHS00_SERVA INTO WA_T7EHS00_SERVA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7EHS00_SERVA-SLONR, sy-vline,
  WA_T7EHS00_SERVA-SPDT, sy-vline,
  WA_T7EHS00_SERVA-BEGDAT, sy-vline,
  WA_T7EHS00_SERVA-ENDDAT, sy-vline,
  WA_T7EHS00_SERVA-WKC, sy-vline,
  WA_T7EHS00_SERVA-PRESP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7EHS00_SERVA 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_T7EHS00_SERVA 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_T7EHS00_SERVA INTO WA_T7EHS00_SERVA.


*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 STP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T7EHS00_SERVA-STP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T7EHS00_SERVA-STP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SLONR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T7EHS00_SERVA-SLONR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T7EHS00_SERVA-SLONR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SPDT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_T7EHS00_SERVA-SPDT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T7EHS00_SERVA-SPDT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRESP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T7EHS00_SERVA-PRESP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T7EHS00_SERVA-PRESP.
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_T7EHS00_SERVA_STR, 
MANDT TYPE STRING,
SRVNUMBER TYPE STRING,
SVONR TYPE STRING,
STP TYPE STRING,
STPTX TYPE STRING,
SLONR TYPE STRING,
SPDT TYPE STRING,
BEGDAT TYPE STRING,
ENDDAT TYPE STRING,
WKC TYPE STRING,
PRESP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7EHS00_SERVA_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_T7EHS00_SERVA_STR-MANDT sy-vline 
WA_T7EHS00_SERVA_STR-SRVNUMBER sy-vline 
WA_T7EHS00_SERVA_STR-SVONR sy-vline 
WA_T7EHS00_SERVA_STR-STP sy-vline 
WA_T7EHS00_SERVA_STR-STPTX sy-vline 
WA_T7EHS00_SERVA_STR-SLONR sy-vline 
WA_T7EHS00_SERVA_STR-SPDT sy-vline 
WA_T7EHS00_SERVA_STR-BEGDAT sy-vline 
WA_T7EHS00_SERVA_STR-ENDDAT sy-vline 
WA_T7EHS00_SERVA_STR-WKC sy-vline 
WA_T7EHS00_SERVA_STR-PRESP sy-vline      INTO ld_text SEPARATED BY SPACE.

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