ABAP Select data from SAP table CCTRRELHIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCTRRELHIST
*  INTO TABLE @DATA(IT_CCTRRELHIST2).
*--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_CCTRRELHIST INDEX 1 INTO DATA(WA_CCTRRELHIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCTRRELHIST>-MANDT = 1.
<CCTRRELHIST>-CENTRALPURCHASECONTRACT = 1.
<CCTRRELHIST>-CENTRALPURCHASECONTRACTITEM = 1.
<CCTRRELHIST>-DISTRIBUTIONKEY = 1.
<CCTRRELHIST>-RELEASEORDER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCTRRELHIST-RELEASEORDERITEM, sy-vline,
  WA_CCTRRELHIST-EXTCONTRACTFORPURG, sy-vline,
  WA_CCTRRELHIST-EXTCONTRACTITEMFORPURG, sy-vline,
  WA_CCTRRELHIST-RELEASEORDERDATE, sy-vline,
  WA_CCTRRELHIST-CALENDARMONTH, sy-vline,
  WA_CCTRRELHIST-CALENDARYEAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCTRRELHIST 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_CCTRRELHIST 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_CCTRRELHIST INTO WA_CCTRRELHIST.


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

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

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

*Conversion exit CUNIT, internal->external for field RELEASEORDERITEMQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CCTRRELHIST-RELEASEORDERITEMQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCTRRELHIST-RELEASEORDERITEMQUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field RELEASEORDEREXCHANGERATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_CCTRRELHIST-RELEASEORDEREXCHANGERATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCTRRELHIST-RELEASEORDEREXCHANGERATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RELEASEORDERLOGICALSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCTRRELHIST-RELEASEORDERLOGICALSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCTRRELHIST-RELEASEORDERLOGICALSYSTEM.
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_CCTRRELHIST_STR, 
MANDT TYPE STRING,
CENTRALPURCHASECONTRACT TYPE STRING,
CENTRALPURCHASECONTRACTITEM TYPE STRING,
DISTRIBUTIONKEY TYPE STRING,
RELEASEORDER TYPE STRING,
RELEASEORDERITEM TYPE STRING,
EXTCONTRACTFORPURG TYPE STRING,
EXTCONTRACTITEMFORPURG TYPE STRING,
RELEASEORDERDATE TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARYEAR TYPE STRING,
CALENDARWEEK TYPE STRING,
CALENDARQUARTER TYPE STRING,
RELEASEORDERITEMORDERQUANTITY TYPE STRING,
RELEASEORDERITEMQUANTITYUNIT TYPE STRING,
RELEASEORDERCURRENCY TYPE STRING,
RELEASEORDEREXCHANGERATE TYPE STRING,
RELEASEORDERITEMISDELETED TYPE STRING,
RELEASEORDERLOGICALSYSTEM TYPE STRING,
RELEASEORDERCOMPANYCODE TYPE STRING,
RELEASEORDERITEMPLANT TYPE STRING,
RELEASEORDERPURGORGANIZATION TYPE STRING,
RELEASEORDERITEMLASTCHGDATE TYPE STRING,
COMPANYCODE TYPE STRING,
PLANT TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
RELEASEORDERITEMNETAMOUNT TYPE STRING,
NUMBEROFRELEASEDORDERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCTRRELHIST_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_CCTRRELHIST_STR-MANDT sy-vline 
WA_CCTRRELHIST_STR-CENTRALPURCHASECONTRACT sy-vline 
WA_CCTRRELHIST_STR-CENTRALPURCHASECONTRACTITEM sy-vline 
WA_CCTRRELHIST_STR-DISTRIBUTIONKEY sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDER sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERITEM sy-vline 
WA_CCTRRELHIST_STR-EXTCONTRACTFORPURG sy-vline 
WA_CCTRRELHIST_STR-EXTCONTRACTITEMFORPURG sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERDATE sy-vline 
WA_CCTRRELHIST_STR-CALENDARMONTH sy-vline 
WA_CCTRRELHIST_STR-CALENDARYEAR sy-vline 
WA_CCTRRELHIST_STR-CALENDARWEEK sy-vline 
WA_CCTRRELHIST_STR-CALENDARQUARTER sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERITEMORDERQUANTITY sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERITEMQUANTITYUNIT sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERCURRENCY sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDEREXCHANGERATE sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERITEMISDELETED sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERLOGICALSYSTEM sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERCOMPANYCODE sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERITEMPLANT sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERPURGORGANIZATION sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERITEMLASTCHGDATE sy-vline 
WA_CCTRRELHIST_STR-COMPANYCODE sy-vline 
WA_CCTRRELHIST_STR-PLANT sy-vline 
WA_CCTRRELHIST_STR-DISPLAYCURRENCY sy-vline 
WA_CCTRRELHIST_STR-RELEASEORDERITEMNETAMOUNT sy-vline 
WA_CCTRRELHIST_STR-NUMBEROFRELEASEDORDERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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