ABAP Select data from SAP table SLCHTADIR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SLCHTADIR
*  INTO TABLE @DATA(IT_SLCHTADIR2).
*--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_SLCHTADIR INDEX 1 INTO DATA(WA_SLCHTADIR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SLCHTADIR>-PGMID = 1.
<SLCHTADIR>-OBJECT = 1.
<SLCHTADIR>-OBJ_NAME = 1.
<SLCHTADIR>-KORRNUM = 1.
<SLCHTADIR>-SRCSYSTEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SLCHTADIR-AUTHOR, sy-vline,
  WA_SLCHTADIR-SRCDEP, sy-vline,
  WA_SLCHTADIR-DEVCLASS, sy-vline,
  WA_SLCHTADIR-GENFLAG, sy-vline,
  WA_SLCHTADIR-EDTFLAG, sy-vline,
  WA_SLCHTADIR-CPROJECT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SLCHTADIR 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_SLCHTADIR 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_SLCHTADIR INTO WA_SLCHTADIR.


*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 ISOLA, internal->external for field MASTERLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SLCHTADIR-MASTERLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SLCHTADIR-MASTERLANG.
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_SLCHTADIR_STR, 
PGMID TYPE STRING,
OBJECT TYPE STRING,
OBJ_NAME TYPE STRING,
KORRNUM TYPE STRING,
SRCSYSTEM TYPE STRING,
AUTHOR TYPE STRING,
SRCDEP TYPE STRING,
DEVCLASS TYPE STRING,
GENFLAG TYPE STRING,
EDTFLAG TYPE STRING,
CPROJECT TYPE STRING,
MASTERLANG TYPE STRING,
VERSID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SLCHTADIR_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_SLCHTADIR_STR-PGMID sy-vline 
WA_SLCHTADIR_STR-OBJECT sy-vline 
WA_SLCHTADIR_STR-OBJ_NAME sy-vline 
WA_SLCHTADIR_STR-KORRNUM sy-vline 
WA_SLCHTADIR_STR-SRCSYSTEM sy-vline 
WA_SLCHTADIR_STR-AUTHOR sy-vline 
WA_SLCHTADIR_STR-SRCDEP sy-vline 
WA_SLCHTADIR_STR-DEVCLASS sy-vline 
WA_SLCHTADIR_STR-GENFLAG sy-vline 
WA_SLCHTADIR_STR-EDTFLAG sy-vline 
WA_SLCHTADIR_STR-CPROJECT sy-vline 
WA_SLCHTADIR_STR-MASTERLANG sy-vline 
WA_SLCHTADIR_STR-VERSID sy-vline      INTO ld_text SEPARATED BY SPACE.

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