ABAP Select data from SAP table CSIM_ST_SEL 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 CSIM_ST_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 CSIM_ST_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 CSIM_ST_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_CSIM_ST_SEL TYPE STANDARD TABLE OF CSIM_ST_SEL,
      WA_CSIM_ST_SEL TYPE CSIM_ST_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: <CSIM_ST_SEL> TYPE CSIM_ST_SEL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSIM_ST_SEL
*  INTO TABLE @DATA(IT_CSIM_ST_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_CSIM_ST_SEL INDEX 1 INTO DATA(WA_CSIM_ST_SEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSIM_ST_SEL>-EXPLTYPE1 = 1.
<CSIM_ST_SEL>-EXPLTYPE2 = 1.
<CSIM_ST_SEL>-FILTER_PNODE = 1.
<CSIM_ST_SEL>-FILTER_PNTYPE = 1.
<CSIM_ST_SEL>-LOTSIZE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSIM_ST_SEL-UNIT, sy-vline,
  WA_CSIM_ST_SEL-ONELEVEL, sy-vline,
  WA_CSIM_ST_SEL-MULTILEVEL, sy-vline,
  WA_CSIM_ST_SEL-PARTLEVEL, sy-vline,
  WA_CSIM_ST_SEL-EXPLLEVEL, sy-vline,
  WA_CSIM_ST_SEL-WITH_PHANTOM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSIM_ST_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_CSIM_ST_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_CSIM_ST_SEL INTO WA_CSIM_ST_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 CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CSIM_ST_SEL-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIM_ST_SEL-UNIT.
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_CSIM_ST_SEL_STR, 
EXPLTYPE1 TYPE STRING,
EXPLTYPE2 TYPE STRING,
FILTER_PNODE TYPE STRING,
FILTER_PNTYPE TYPE STRING,
LOTSIZE TYPE STRING,
UNIT TYPE STRING,
ONELEVEL TYPE STRING,
MULTILEVEL TYPE STRING,
PARTLEVEL TYPE STRING,
EXPLLEVEL TYPE STRING,
WITH_PHANTOM TYPE STRING,
ALV_VARIANT TYPE STRING,
SCOPE_ALL TYPE STRING,
SCOPE_DELTA TYPE STRING,
LEVEL_FROM TYPE STRING,
LEVEL_TO TYPE STRING,
EXPLTYPE3 TYPE STRING,
EXPLTYPE4 TYPE STRING,
OFFSETFROM1 TYPE STRING,
OFFSETTO1 TYPE STRING,
OFFSETFROM2 TYPE STRING,
OFFSETTO2 TYPE STRING,
NOVORS TYPE STRING,
DISPLPROTOCOL TYPE STRING,
SAVEPROTOCOL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSIM_ST_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_CSIM_ST_SEL_STR-EXPLTYPE1 sy-vline 
WA_CSIM_ST_SEL_STR-EXPLTYPE2 sy-vline 
WA_CSIM_ST_SEL_STR-FILTER_PNODE sy-vline 
WA_CSIM_ST_SEL_STR-FILTER_PNTYPE sy-vline 
WA_CSIM_ST_SEL_STR-LOTSIZE sy-vline 
WA_CSIM_ST_SEL_STR-UNIT sy-vline 
WA_CSIM_ST_SEL_STR-ONELEVEL sy-vline 
WA_CSIM_ST_SEL_STR-MULTILEVEL sy-vline 
WA_CSIM_ST_SEL_STR-PARTLEVEL sy-vline 
WA_CSIM_ST_SEL_STR-EXPLLEVEL sy-vline 
WA_CSIM_ST_SEL_STR-WITH_PHANTOM sy-vline 
WA_CSIM_ST_SEL_STR-ALV_VARIANT sy-vline 
WA_CSIM_ST_SEL_STR-SCOPE_ALL sy-vline 
WA_CSIM_ST_SEL_STR-SCOPE_DELTA sy-vline 
WA_CSIM_ST_SEL_STR-LEVEL_FROM sy-vline 
WA_CSIM_ST_SEL_STR-LEVEL_TO sy-vline 
WA_CSIM_ST_SEL_STR-EXPLTYPE3 sy-vline 
WA_CSIM_ST_SEL_STR-EXPLTYPE4 sy-vline 
WA_CSIM_ST_SEL_STR-OFFSETFROM1 sy-vline 
WA_CSIM_ST_SEL_STR-OFFSETTO1 sy-vline 
WA_CSIM_ST_SEL_STR-OFFSETFROM2 sy-vline 
WA_CSIM_ST_SEL_STR-OFFSETTO2 sy-vline 
WA_CSIM_ST_SEL_STR-NOVORS sy-vline 
WA_CSIM_ST_SEL_STR-DISPLPROTOCOL sy-vline 
WA_CSIM_ST_SEL_STR-SAVEPROTOCOL sy-vline      INTO ld_text SEPARATED BY SPACE.

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