ABAP Select data from SAP table CSISU_CSMLDOCT_BR4 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CSISU_CSMLDOCT_BR4 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 CSISU_CSMLDOCT_BR4. 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 CSISU_CSMLDOCT_BR4 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_CSISU_CSMLDOCT_BR4 TYPE STANDARD TABLE OF CSISU_CSMLDOCT_BR4,
      WA_CSISU_CSMLDOCT_BR4 TYPE CSISU_CSMLDOCT_BR4,
      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: <CSISU_CSMLDOCT_BR4> TYPE CSISU_CSMLDOCT_BR4.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CSISU_CSMLDOCT_BR4.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CSISU_CSMLDOCT_BR4
  INTO TABLE IT_CSISU_CSMLDOCT_BR4.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSISU_CSMLDOCT_BR4
*  INTO TABLE @DATA(IT_CSISU_CSMLDOCT_BR42).
*--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_CSISU_CSMLDOCT_BR4 INDEX 1 INTO DATA(WA_CSISU_CSMLDOCT_BR42).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CSISU_CSMLDOCT_BR4 ASSIGNING <CSISU_CSMLDOCT_BR4>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSISU_CSMLDOCT_BR4>-KEY = 1.
<CSISU_CSMLDOCT_BR4>-PARENT_KEY = 1.
<CSISU_CSMLDOCT_BR4>-ROOT_KEY = 1.
<CSISU_CSMLDOCT_BR4>-SCENARIOID = 1.
<CSISU_CSMLDOCT_BR4>-ORIGINALPRINTDOCUMENT = 1.

ENDLOOP.

LOOP AT IT_CSISU_CSMLDOCT_BR4 INTO WA_CSISU_CSMLDOCT_BR4.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSISU_CSMLDOCT_BR4-SIMULATEDPRINTDOCUMENT, sy-vline,
  WA_CSISU_CSMLDOCT_BR4-DOCUMENTCREATIONDATE, sy-vline,
  WA_CSISU_CSMLDOCT_BR4-INSTALLATION, sy-vline,
  WA_CSISU_CSMLDOCT_BR4-CONTRACT, sy-vline,
  WA_CSISU_CSMLDOCT_BR4-DOCUMENTITEMTYPE, sy-vline,
  WA_CSISU_CSMLDOCT_BR4-OPERATIONKEY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSISU_CSMLDOCT_BR4 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_CSISU_CSMLDOCT_BR4 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_CSISU_CSMLDOCT_BR4 INTO WA_CSISU_CSMLDOCT_BR4.


*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 SCENARIOID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSISU_CSMLDOCT_BR4-SCENARIOID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSISU_CSMLDOCT_BR4-SCENARIOID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORIGINALPRINTDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSISU_CSMLDOCT_BR4-ORIGINALPRINTDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSISU_CSMLDOCT_BR4-ORIGINALPRINTDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SIMULATEDPRINTDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSISU_CSMLDOCT_BR4-SIMULATEDPRINTDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSISU_CSMLDOCT_BR4-SIMULATEDPRINTDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INSTALLATION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSISU_CSMLDOCT_BR4-INSTALLATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSISU_CSMLDOCT_BR4-INSTALLATION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSISU_CSMLDOCT_BR4-CONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSISU_CSMLDOCT_BR4-CONTRACT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSISU_CSMLDOCT_BR4-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSISU_CSMLDOCT_BR4-BUSINESSPARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BILLINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSISU_CSMLDOCT_BR4-BILLINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSISU_CSMLDOCT_BR4-BILLINGDOCUMENT.
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_CSISU_CSMLDOCT_BR4_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
SCENARIOID TYPE STRING,
ORIGINALPRINTDOCUMENT TYPE STRING,
SIMULATEDPRINTDOCUMENT TYPE STRING,
DOCUMENTCREATIONDATE TYPE STRING,
INSTALLATION TYPE STRING,
CONTRACT TYPE STRING,
DOCUMENTITEMTYPE TYPE STRING,
OPERATIONKEY TYPE STRING,
PRIORORDERING TYPE STRING,
MAINOPERATIONDOCUMENTITEM TYPE STRING,
SUBOPERATIONDOCUMENTITEM TYPE STRING,
BUSINESSPARTNER TYPE STRING,
BEGINBILLPERIOD TYPE STRING,
ENDBILLPERIOD TYPE STRING,
POSTINGDATE TYPE STRING,
BILLINGDOCUMENT TYPE STRING,
FICAPOSTINGSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSISU_CSMLDOCT_BR4_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_CSISU_CSMLDOCT_BR4_STR-KEY sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-PARENT_KEY sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-ROOT_KEY sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-SCENARIOID sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-ORIGINALPRINTDOCUMENT sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-SIMULATEDPRINTDOCUMENT sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-DOCUMENTCREATIONDATE sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-INSTALLATION sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-CONTRACT sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-DOCUMENTITEMTYPE sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-OPERATIONKEY sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-PRIORORDERING sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-MAINOPERATIONDOCUMENTITEM sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-SUBOPERATIONDOCUMENTITEM sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-BUSINESSPARTNER sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-BEGINBILLPERIOD sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-ENDBILLPERIOD sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-POSTINGDATE sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-BILLINGDOCUMENT sy-vline 
WA_CSISU_CSMLDOCT_BR4_STR-FICAPOSTINGSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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