ABAP Select data from SAP table ENH_SENHMT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENH_SENHMT
*  INTO TABLE @DATA(IT_ENH_SENHMT2).
*--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_ENH_SENHMT INDEX 1 INTO DATA(WA_ENH_SENHMT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENH_SENHMT>-STD = 1.
<ENH_SENHMT>-ENHMT = 1.
<ENH_SENHMT>-STMNT = 1.
<ENH_SENHMT>-FROM = 1.
<ENH_SENHMT>-TO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENH_SENHMT-NAME, sy-vline,
  WA_ENH_SENHMT-INCLUDE, sy-vline,
  WA_ENH_SENHMT-ID, sy-vline,
  WA_ENH_SENHMT-TYPE, sy-vline,
  WA_ENH_SENHMT-MODE, sy-vline,
  WA_ENH_SENHMT-FULL_NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENH_SENHMT 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_ENH_SENHMT 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_ENH_SENHMT INTO WA_ENH_SENHMT.


*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_ENH_SENHMT_STR, 
STD TYPE STRING,
ENHMT TYPE STRING,
STMNT TYPE STRING,
FROM TYPE STRING,
TO TYPE STRING,
NAME TYPE STRING,
INCLUDE TYPE STRING,
ID TYPE STRING,
TYPE TYPE STRING,
MODE TYPE STRING,
FULL_NAME TYPE STRING,
VERSION TYPE STRING,
INCL TYPE STRING,
SOURCE_LINE TYPE STRING,
SOURCE_POSITION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENH_SENHMT_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_ENH_SENHMT_STR-STD sy-vline 
WA_ENH_SENHMT_STR-ENHMT sy-vline 
WA_ENH_SENHMT_STR-STMNT sy-vline 
WA_ENH_SENHMT_STR-FROM sy-vline 
WA_ENH_SENHMT_STR-TO sy-vline 
WA_ENH_SENHMT_STR-NAME sy-vline 
WA_ENH_SENHMT_STR-INCLUDE sy-vline 
WA_ENH_SENHMT_STR-ID sy-vline 
WA_ENH_SENHMT_STR-TYPE sy-vline 
WA_ENH_SENHMT_STR-MODE sy-vline 
WA_ENH_SENHMT_STR-FULL_NAME sy-vline 
WA_ENH_SENHMT_STR-VERSION sy-vline 
WA_ENH_SENHMT_STR-INCL sy-vline 
WA_ENH_SENHMT_STR-SOURCE_LINE sy-vline 
WA_ENH_SENHMT_STR-SOURCE_POSITION sy-vline      INTO ld_text SEPARATED BY SPACE.

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