ABAP Select data from SAP table CCM_TCOLL_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCM_TCOLL_ALV
*  INTO TABLE @DATA(IT_CCM_TCOLL_ALV2).
*--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_CCM_TCOLL_ALV INDEX 1 INTO DATA(WA_CCM_TCOLL_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCM_TCOLL_ALV>-RNAME = 1.
<CCM_TCOLL_ALV>-DAYOW1 = 1.
<CCM_TCOLL_ALV>-DAYOW2 = 1.
<CCM_TCOLL_ALV>-DAYOW3 = 1.
<CCM_TCOLL_ALV>-DAYOW4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCM_TCOLL_ALV-DAYOW5, sy-vline,
  WA_CCM_TCOLL_ALV-DAYOW6, sy-vline,
  WA_CCM_TCOLL_ALV-DAYOW7, sy-vline,
  WA_CCM_TCOLL_ALV-TIMOD1, sy-vline,
  WA_CCM_TCOLL_ALV-TIMOD2, sy-vline,
  WA_CCM_TCOLL_ALV-TIMOD3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCM_TCOLL_ALV 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_CCM_TCOLL_ALV 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_CCM_TCOLL_ALV INTO WA_CCM_TCOLL_ALV.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CCM_TCOLL_ALV_STR, 
RNAME TYPE STRING,
DAYOW1 TYPE STRING,
DAYOW2 TYPE STRING,
DAYOW3 TYPE STRING,
DAYOW4 TYPE STRING,
DAYOW5 TYPE STRING,
DAYOW6 TYPE STRING,
DAYOW7 TYPE STRING,
TIMOD1 TYPE STRING,
TIMOD2 TYPE STRING,
TIMOD3 TYPE STRING,
TIMOD4 TYPE STRING,
TIMOD5 TYPE STRING,
TIMOD6 TYPE STRING,
TIMOD7 TYPE STRING,
TIMOD8 TYPE STRING,
TIMOD9 TYPE STRING,
TIMOD10 TYPE STRING,
TIMOD11 TYPE STRING,
TIMOD12 TYPE STRING,
TIMOD13 TYPE STRING,
TIMOD14 TYPE STRING,
TIMOD15 TYPE STRING,
TIMOD16 TYPE STRING,
TIMOD17 TYPE STRING,
TIMOD18 TYPE STRING,
TIMOD19 TYPE STRING,
TIMOD20 TYPE STRING,
TIMOD21 TYPE STRING,
TIMOD22 TYPE STRING,
TIMOD23 TYPE STRING,
TIMOD24 TYPE STRING,
RENUM TYPE STRING,
SYTYP TYPE STRING,
ALTSY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCM_TCOLL_ALV_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_CCM_TCOLL_ALV_STR-RNAME sy-vline 
WA_CCM_TCOLL_ALV_STR-DAYOW1 sy-vline 
WA_CCM_TCOLL_ALV_STR-DAYOW2 sy-vline 
WA_CCM_TCOLL_ALV_STR-DAYOW3 sy-vline 
WA_CCM_TCOLL_ALV_STR-DAYOW4 sy-vline 
WA_CCM_TCOLL_ALV_STR-DAYOW5 sy-vline 
WA_CCM_TCOLL_ALV_STR-DAYOW6 sy-vline 
WA_CCM_TCOLL_ALV_STR-DAYOW7 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD1 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD2 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD3 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD4 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD5 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD6 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD7 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD8 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD9 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD10 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD11 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD12 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD13 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD14 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD15 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD16 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD17 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD18 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD19 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD20 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD21 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD22 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD23 sy-vline 
WA_CCM_TCOLL_ALV_STR-TIMOD24 sy-vline 
WA_CCM_TCOLL_ALV_STR-RENUM sy-vline 
WA_CCM_TCOLL_ALV_STR-SYTYP sy-vline 
WA_CCM_TCOLL_ALV_STR-ALTSY sy-vline      INTO ld_text SEPARATED BY SPACE.

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