ABAP Select data from SAP table SLCHRDDM2 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP SLCHRDDM2 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 SLCHRDDM2. 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 SLCHRDDM2 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_SLCHRDDM2 TYPE STANDARD TABLE OF SLCHRDDM2,
      WA_SLCHRDDM2 TYPE SLCHRDDM2,
      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: <SLCHRDDM2> TYPE SLCHRDDM2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SLCHRDDM2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SLCHRDDM2
  INTO TABLE IT_SLCHRDDM2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SLCHRDDM2
*  INTO TABLE @DATA(IT_SLCHRDDM22).
*--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_SLCHRDDM2 INDEX 1 INTO DATA(WA_SLCHRDDM22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SLCHRDDM2 ASSIGNING <SLCHRDDM2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SLCHRDDM2>-DESCRIPT = 1.
<SLCHRDDM2>-ALONE = 1.
<SLCHRDDM2>-TWOSYSTEMS = 1.
<SLCHRDDM2>-THREESYST = 1.
<SLCHRDDM2>-OTHERS = 1.

ENDLOOP.

LOOP AT IT_SLCHRDDM2 INTO WA_SLCHRDDM2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SLCHRDDM2-TESTSYSTEM, sy-vline,
  WA_SLCHRDDM2-PRODSYSTEM, sy-vline,
  WA_SLCHRDDM2-ENTWSYSTEM, sy-vline,
  WA_SLCHRDDM2-KONSSYSTEM, sy-vline,
  WA_SLCHRDDM2-PRO3SYSTEM, sy-vline,
  WA_SLCHRDDM2-SOURCE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SLCHRDDM2 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_SLCHRDDM2 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_SLCHRDDM2 INTO WA_SLCHRDDM2.


*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_SLCHRDDM2_STR, 
DESCRIPT TYPE STRING,
ALONE TYPE STRING,
TWOSYSTEMS TYPE STRING,
THREESYST TYPE STRING,
OTHERS TYPE STRING,
TESTSYSTEM TYPE STRING,
PRODSYSTEM TYPE STRING,
ENTWSYSTEM TYPE STRING,
KONSSYSTEM TYPE STRING,
PRO3SYSTEM TYPE STRING,
SOURCE TYPE STRING,
DESTIN TYPE STRING,
TRANSLAYER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SLCHRDDM2_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_SLCHRDDM2_STR-DESCRIPT sy-vline 
WA_SLCHRDDM2_STR-ALONE sy-vline 
WA_SLCHRDDM2_STR-TWOSYSTEMS sy-vline 
WA_SLCHRDDM2_STR-THREESYST sy-vline 
WA_SLCHRDDM2_STR-OTHERS sy-vline 
WA_SLCHRDDM2_STR-TESTSYSTEM sy-vline 
WA_SLCHRDDM2_STR-PRODSYSTEM sy-vline 
WA_SLCHRDDM2_STR-ENTWSYSTEM sy-vline 
WA_SLCHRDDM2_STR-KONSSYSTEM sy-vline 
WA_SLCHRDDM2_STR-PRO3SYSTEM sy-vline 
WA_SLCHRDDM2_STR-SOURCE sy-vline 
WA_SLCHRDDM2_STR-DESTIN sy-vline 
WA_SLCHRDDM2_STR-TRANSLAYER sy-vline      INTO ld_text SEPARATED BY SPACE.

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