ABAP Select data from SAP table CCMRROQRY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCMRROQRY
*  INTO TABLE @DATA(IT_CCMRROQRY2).
*--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_CCMRROQRY INDEX 1 INTO DATA(WA_CCMRROQRY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCMRROQRY>-MANDT = 1.
<CCMRROQRY>-CHGMGMTREQRELTDOBJUUID = 1.
<CCMRROQRY>-CHGMGMTRELTDOBJTYPE = 1.
<CCMRROQRY>-CHGMGMTRELTDOBJTYPETEXT = 1.
<CCMRROQRY>-CHGMGMTREQRELTDOBJNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCMRROQRY-CHGMGMTREQSTATUS, sy-vline,
  WA_CCMRROQRY-CHGMGMTREQTYPE, sy-vline,
  WA_CCMRROQRY-CHGMGMTREQLEADINGOBJTYPE, sy-vline,
  WA_CCMRROQRY-CHGMGMTREQLEADINGOBJECT, sy-vline,
  WA_CCMRROQRY-CHGMGMTREQLEADINGOBJNAME, sy-vline,
  WA_CCMRROQRY-COUNTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCMRROQRY 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_CCMRROQRY 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_CCMRROQRY INTO WA_CCMRROQRY.


*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 CHGMGMTREQIMPACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCMRROQRY-CHGMGMTREQIMPACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCMRROQRY-CHGMGMTREQIMPACT.
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_CCMRROQRY_STR, 
MANDT TYPE STRING,
CHGMGMTREQRELTDOBJUUID TYPE STRING,
CHGMGMTRELTDOBJTYPE TYPE STRING,
CHGMGMTRELTDOBJTYPETEXT TYPE STRING,
CHGMGMTREQRELTDOBJNAME TYPE STRING,
CHGMGMTREQSTATUS TYPE STRING,
CHGMGMTREQTYPE TYPE STRING,
CHGMGMTREQLEADINGOBJTYPE TYPE STRING,
CHGMGMTREQLEADINGOBJECT TYPE STRING,
CHGMGMTREQLEADINGOBJNAME TYPE STRING,
COUNTRY TYPE STRING,
CHGMGMTREQRELTDOBJECT TYPE STRING,
CHGMGMTREQISEMERGENCY TYPE STRING,
CHGMGMTREQDURATIONCODE TYPE STRING,
CHGMGMTREQIMPACT TYPE STRING,
CHGMGMTREQREVERSALDATE TYPE STRING,
CHGMGMTREQAPPROVALDATE TYPE STRING,
CHGMGMTREQEXECSTARTDATE TYPE STRING,
CHGMGMTREQOPLSTARTDATE TYPE STRING,
CHGMGMTREQCREATIONDATE TYPE STRING,
NUMBEROFCHGMGMTREQUESTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCMRROQRY_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_CCMRROQRY_STR-MANDT sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQRELTDOBJUUID sy-vline 
WA_CCMRROQRY_STR-CHGMGMTRELTDOBJTYPE sy-vline 
WA_CCMRROQRY_STR-CHGMGMTRELTDOBJTYPETEXT sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQRELTDOBJNAME sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQSTATUS sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQTYPE sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQLEADINGOBJTYPE sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQLEADINGOBJECT sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQLEADINGOBJNAME sy-vline 
WA_CCMRROQRY_STR-COUNTRY sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQRELTDOBJECT sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQISEMERGENCY sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQDURATIONCODE sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQIMPACT sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQREVERSALDATE sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQAPPROVALDATE sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQEXECSTARTDATE sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQOPLSTARTDATE sy-vline 
WA_CCMRROQRY_STR-CHGMGMTREQCREATIONDATE sy-vline 
WA_CCMRROQRY_STR-NUMBEROFCHGMGMTREQUESTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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