ABAP Select data from SAP table KSML_SEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KSML_SEL
*  INTO TABLE @DATA(IT_KSML_SEL2).
*--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_KSML_SEL INDEX 1 INTO DATA(WA_KSML_SEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KSML_SEL>-MANDT = 1.
<KSML_SEL>-CLINT = 1.
<KSML_SEL>-POSNR = 1.
<KSML_SEL>-ADZHL = 1.
<KSML_SEL>-ABTEI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KSML_SEL-DINKB, sy-vline,
  WA_KSML_SEL-HERKU, sy-vline,
  WA_KSML_SEL-IMERK, sy-vline,
  WA_KSML_SEL-OMERK, sy-vline,
  WA_KSML_SEL-KLART, sy-vline,
  WA_KSML_SEL-RELEV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KSML_SEL 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_KSML_SEL 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_KSML_SEL INTO WA_KSML_SEL.


*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 ATINN, internal->external for field IMERK
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_KSML_SEL-IMERK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KSML_SEL-IMERK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field OMERK
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_KSML_SEL-OMERK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KSML_SEL-OMERK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KSML_SEL-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KSML_SEL-AENNR.
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_KSML_SEL_STR, 
MANDT TYPE STRING,
CLINT TYPE STRING,
POSNR TYPE STRING,
ADZHL TYPE STRING,
ABTEI TYPE STRING,
DINKB TYPE STRING,
HERKU TYPE STRING,
IMERK TYPE STRING,
OMERK TYPE STRING,
KLART TYPE STRING,
RELEV TYPE STRING,
DATUV TYPE STRING,
TECHV TYPE STRING,
AENNR TYPE STRING,
LKENZ TYPE STRING,
VMERK TYPE STRING,
DPLEN TYPE STRING,
OFFST TYPE STRING,
BLLIN TYPE STRING,
DPTXT TYPE STRING,
CUSTR TYPE STRING,
JUSTR TYPE STRING,
COLOR TYPE STRING,
INTSF TYPE STRING,
INVER TYPE STRING,
CKBOX TYPE STRING,
INPUT TYPE STRING,
AMERK TYPE STRING,
MKENN TYPE STRING,
DATUB TYPE STRING,
PPREL TYPE STRING,
EWM_REL TYPE STRING,
PROP_REL TYPE STRING,
ATNAM TYPE STRING,
ATFOR TYPE STRING,
POSITION TYPE STRING,
ATAME TYPE STRING,
ATWME TYPE STRING,
ATBEZ TYPE STRING,
ATINT TYPE STRING,
ATEIN TYPE STRING,
ATSCH TYPE STRING,
ATKLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KSML_SEL_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_KSML_SEL_STR-MANDT sy-vline 
WA_KSML_SEL_STR-CLINT sy-vline 
WA_KSML_SEL_STR-POSNR sy-vline 
WA_KSML_SEL_STR-ADZHL sy-vline 
WA_KSML_SEL_STR-ABTEI sy-vline 
WA_KSML_SEL_STR-DINKB sy-vline 
WA_KSML_SEL_STR-HERKU sy-vline 
WA_KSML_SEL_STR-IMERK sy-vline 
WA_KSML_SEL_STR-OMERK sy-vline 
WA_KSML_SEL_STR-KLART sy-vline 
WA_KSML_SEL_STR-RELEV sy-vline 
WA_KSML_SEL_STR-DATUV sy-vline 
WA_KSML_SEL_STR-TECHV sy-vline 
WA_KSML_SEL_STR-AENNR sy-vline 
WA_KSML_SEL_STR-LKENZ sy-vline 
WA_KSML_SEL_STR-VMERK sy-vline 
WA_KSML_SEL_STR-DPLEN sy-vline 
WA_KSML_SEL_STR-OFFST sy-vline 
WA_KSML_SEL_STR-BLLIN sy-vline 
WA_KSML_SEL_STR-DPTXT sy-vline 
WA_KSML_SEL_STR-CUSTR sy-vline 
WA_KSML_SEL_STR-JUSTR sy-vline 
WA_KSML_SEL_STR-COLOR sy-vline 
WA_KSML_SEL_STR-INTSF sy-vline 
WA_KSML_SEL_STR-INVER sy-vline 
WA_KSML_SEL_STR-CKBOX sy-vline 
WA_KSML_SEL_STR-INPUT sy-vline 
WA_KSML_SEL_STR-AMERK sy-vline 
WA_KSML_SEL_STR-MKENN sy-vline 
WA_KSML_SEL_STR-DATUB sy-vline 
WA_KSML_SEL_STR-PPREL sy-vline 
WA_KSML_SEL_STR-EWM_REL sy-vline 
WA_KSML_SEL_STR-PROP_REL sy-vline 
WA_KSML_SEL_STR-ATNAM sy-vline 
WA_KSML_SEL_STR-ATFOR sy-vline 
WA_KSML_SEL_STR-POSITION sy-vline 
WA_KSML_SEL_STR-ATAME sy-vline 
WA_KSML_SEL_STR-ATWME sy-vline 
WA_KSML_SEL_STR-ATBEZ sy-vline 
WA_KSML_SEL_STR-ATINT sy-vline 
WA_KSML_SEL_STR-ATEIN sy-vline 
WA_KSML_SEL_STR-ATSCH sy-vline 
WA_KSML_SEL_STR-ATKLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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