ABAP Select data from SAP table CSIN into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CSIN 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 CSIN. 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 CSIN 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_CSIN TYPE STANDARD TABLE OF CSIN,
      WA_CSIN TYPE CSIN,
      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: <CSIN> TYPE CSIN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSIN
*  INTO TABLE @DATA(IT_CSIN2).
*--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_CSIN INDEX 1 INTO DATA(WA_CSIN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSIN>-AENNR = 1.
<CSIN>-CLASS = 1.
<CSIN>-CLINT = 1.
<CSIN>-CLSZU = 1.
<CSIN>-CMODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSIN-DATUB, sy-vline,
  WA_CSIN-DATUV, sy-vline,
  WA_CSIN-DOKAR, sy-vline,
  WA_CSIN-DOKNR, sy-vline,
  WA_CSIN-DOKTL, sy-vline,
  WA_CSIN-DOKVR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSIN 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_CSIN 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_CSIN INTO WA_CSIN.


*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 ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-DOKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field IDNRK
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-IDNRK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-IDNRK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-POSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field REVLV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-REVLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-REVLV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-STLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-STLAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-STLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSIN-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSIN-VBELN.
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_CSIN_STR, 
AENNR TYPE STRING,
CLASS TYPE STRING,
CLINT TYPE STRING,
CLSZU TYPE STRING,
CMODE TYPE STRING,
DATUB TYPE STRING,
DATUV TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKTL TYPE STRING,
DOKVR TYPE STRING,
EFF_CLINT TYPE STRING,
EMENG TYPE STRING,
EQUNR TYPE STRING,
FCODE TYPE STRING,
FPTYP TYPE STRING,
IDNRK TYPE STRING,
IGNOT TYPE STRING,
KLART TYPE STRING,
KNOBJ TYPE STRING,
KZPLN TYPE STRING,
LOEKZ TYPE STRING,
MATNR TYPE STRING,
OTCLA TYPE STRING,
OTDOC TYPE STRING,
OTMAT TYPE STRING,
PLNIN TYPE STRING,
POSNR TYPE STRING,
PSPNR TYPE STRING,
REVLV TYPE STRING,
STLAL TYPE STRING,
STLAN TYPE STRING,
STLKN TYPE STRING,
STPOZ TYPE STRING,
STLNR TYPE STRING,
STLTY TYPE STRING,
STOBJ TYPE STRING,
STUEZ TYPE STRING,
TPLNR TYPE STRING,
TRTYP TYPE STRING,
VBELN TYPE STRING,
VBPOS TYPE STRING,
WERKS TYPE STRING,
SGT_CMKZ TYPE STRING,
BOM_VERSN TYPE STRING,
VERSNST TYPE STRING,
VERSNIND TYPE STRING,
VERSNLASTIND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSIN_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_CSIN_STR-AENNR sy-vline 
WA_CSIN_STR-CLASS sy-vline 
WA_CSIN_STR-CLINT sy-vline 
WA_CSIN_STR-CLSZU sy-vline 
WA_CSIN_STR-CMODE sy-vline 
WA_CSIN_STR-DATUB sy-vline 
WA_CSIN_STR-DATUV sy-vline 
WA_CSIN_STR-DOKAR sy-vline 
WA_CSIN_STR-DOKNR sy-vline 
WA_CSIN_STR-DOKTL sy-vline 
WA_CSIN_STR-DOKVR sy-vline 
WA_CSIN_STR-EFF_CLINT sy-vline 
WA_CSIN_STR-EMENG sy-vline 
WA_CSIN_STR-EQUNR sy-vline 
WA_CSIN_STR-FCODE sy-vline 
WA_CSIN_STR-FPTYP sy-vline 
WA_CSIN_STR-IDNRK sy-vline 
WA_CSIN_STR-IGNOT sy-vline 
WA_CSIN_STR-KLART sy-vline 
WA_CSIN_STR-KNOBJ sy-vline 
WA_CSIN_STR-KZPLN sy-vline 
WA_CSIN_STR-LOEKZ sy-vline 
WA_CSIN_STR-MATNR sy-vline 
WA_CSIN_STR-OTCLA sy-vline 
WA_CSIN_STR-OTDOC sy-vline 
WA_CSIN_STR-OTMAT sy-vline 
WA_CSIN_STR-PLNIN sy-vline 
WA_CSIN_STR-POSNR sy-vline 
WA_CSIN_STR-PSPNR sy-vline 
WA_CSIN_STR-REVLV sy-vline 
WA_CSIN_STR-STLAL sy-vline 
WA_CSIN_STR-STLAN sy-vline 
WA_CSIN_STR-STLKN sy-vline 
WA_CSIN_STR-STPOZ sy-vline 
WA_CSIN_STR-STLNR sy-vline 
WA_CSIN_STR-STLTY sy-vline 
WA_CSIN_STR-STOBJ sy-vline 
WA_CSIN_STR-STUEZ sy-vline 
WA_CSIN_STR-TPLNR sy-vline 
WA_CSIN_STR-TRTYP sy-vline 
WA_CSIN_STR-VBELN sy-vline 
WA_CSIN_STR-VBPOS sy-vline 
WA_CSIN_STR-WERKS sy-vline 
WA_CSIN_STR-SGT_CMKZ sy-vline 
WA_CSIN_STR-BOM_VERSN sy-vline 
WA_CSIN_STR-VERSNST sy-vline 
WA_CSIN_STR-VERSNIND sy-vline 
WA_CSIN_STR-VERSNLASTIND sy-vline      INTO ld_text SEPARATED BY SPACE.

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