ABAP Select data from SAP table CABA_HR_COMMUNICATION_STRUCT 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 CABA_HR_COMMUNICATION_STRUCT 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 CABA_HR_COMMUNICATION_STRUCT. 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 CABA_HR_COMMUNICATION_STRUCT 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_CABA_HR_COMMUNICATION_STRUCT TYPE STANDARD TABLE OF CABA_HR_COMMUNICATION_STRUCT,
      WA_CABA_HR_COMMUNICATION_STRUCT TYPE CABA_HR_COMMUNICATION_STRUCT,
      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: <CABA_HR_COMMUNICATION_STRUCT> TYPE CABA_HR_COMMUNICATION_STRUCT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CABA_HR_COMMUNICATION_STRUCT
*  INTO TABLE @DATA(IT_CABA_HR_COMMUNICATION_STRUCT2).
*--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_CABA_HR_COMMUNICATION_STRUCT INDEX 1 INTO DATA(WA_CABA_HR_COMMUNICATION_STRUCT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CABA_HR_COMMUNICATION_STRUCT>-ROW = 1.
<CABA_HR_COMMUNICATION_STRUCT>-WORKDATE = 1.
<CABA_HR_COMMUNICATION_STRUCT>-UNIT = 1.
<CABA_HR_COMMUNICATION_STRUCT>-QUANTITY = 1.
<CABA_HR_COMMUNICATION_STRUCT>-CURR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CABA_HR_COMMUNICATION_STRUCT-AMOUNT, sy-vline,
  WA_CABA_HR_COMMUNICATION_STRUCT-QUANT_OR_AMOUNT, sy-vline,
  WA_CABA_HR_COMMUNICATION_STRUCT-STARTTIME, sy-vline,
  WA_CABA_HR_COMMUNICATION_STRUCT-ENDTIME, sy-vline,
  WA_CABA_HR_COMMUNICATION_STRUCT-NO_ADD_UP, sy-vline,
  WA_CABA_HR_COMMUNICATION_STRUCT-OTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CABA_HR_COMMUNICATION_STRUCT 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_CABA_HR_COMMUNICATION_STRUCT 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_CABA_HR_COMMUNICATION_STRUCT INTO WA_CABA_HR_COMMUNICATION_STRUCT.


*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_CABA_HR_COMMUNICATION_STRUCT-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CABA_HR_COMMUNICATION_STRUCT-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HRKOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CABA_HR_COMMUNICATION_STRUCT-HRKOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CABA_HR_COMMUNICATION_STRUCT-HRKOSTL.
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_CABA_HR_COMMUNICATION_STRUCT_STR, 
ROW TYPE STRING,
WORKDATE TYPE STRING,
UNIT TYPE STRING,
QUANTITY TYPE STRING,
CURR TYPE STRING,
AMOUNT TYPE STRING,
QUANT_OR_AMOUNT TYPE STRING,
STARTTIME TYPE STRING,
ENDTIME TYPE STRING,
NO_ADD_UP TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
PERNR TYPE STRING,
AWART TYPE STRING,
ALLDF TYPE STRING,
VTKEN TYPE STRING,
LGART TYPE STRING,
VERSL TYPE STRING,
WTART TYPE STRING,
BWGRL TYPE STRING,
WAERS TYPE STRING,
AUFKZ TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
PRAKN TYPE STRING,
PRAKZ TYPE STRING,
PLANS TYPE STRING,
HRCOSTASG TYPE STRING,
HRKOSTL TYPE STRING,
HRLSTAR TYPE STRING,
BUKRS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CABA_HR_COMMUNICATION_STRUCT_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_CABA_HR_COMMUNICATION_STRUCT_STR-ROW sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-WORKDATE sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-UNIT sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-QUANTITY sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-CURR sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-AMOUNT sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-QUANT_OR_AMOUNT sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-STARTTIME sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-ENDTIME sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-NO_ADD_UP sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-OTYPE sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-OBJID sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-PERNR sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-AWART sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-ALLDF sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-VTKEN sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-LGART sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-VERSL sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-WTART sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-BWGRL sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-WAERS sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-AUFKZ sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-TRFGR sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-TRFST sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-PRAKN sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-PRAKZ sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-PLANS sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-HRCOSTASG sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-HRKOSTL sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-HRLSTAR sy-vline 
WA_CABA_HR_COMMUNICATION_STRUCT_STR-BUKRS sy-vline      INTO ld_text SEPARATED BY SPACE.

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