ABAP Select data from SAP table ISSUECHANGREQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSUECHANGREQ
*  INTO TABLE @DATA(IT_ISSUECHANGREQ2).
*--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_ISSUECHANGREQ INDEX 1 INTO DATA(WA_ISSUECHANGREQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISSUECHANGREQ>-MANDT = 1.
<ISSUECHANGREQ>-MASTERPROJECTUUID = 1.
<ISSUECHANGREQ>-PROJECTUUID = 1.
<ISSUECHANGREQ>-MASTERPROJECT = 1.
<ISSUECHANGREQ>-MASTERPROJECTNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISSUECHANGREQ-MASTERPROJECTTYPE, sy-vline,
  WA_ISSUECHANGREQ-MASTERPROJECTSTAGE, sy-vline,
  WA_ISSUECHANGREQ-STARTDATE, sy-vline,
  WA_ISSUECHANGREQ-ENDDATE, sy-vline,
  WA_ISSUECHANGREQ-CUSTOMER, sy-vline,
  WA_ISSUECHANGREQ-MASTERPROJECTORGANIZATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISSUECHANGREQ 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_ISSUECHANGREQ 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_ISSUECHANGREQ INTO WA_ISSUECHANGREQ.


*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 CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSUECHANGREQ-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSUECHANGREQ-CUSTOMER.
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_ISSUECHANGREQ_STR, 
MANDT TYPE STRING,
MASTERPROJECTUUID TYPE STRING,
PROJECTUUID TYPE STRING,
MASTERPROJECT TYPE STRING,
MASTERPROJECTNAME TYPE STRING,
MASTERPROJECTTYPE TYPE STRING,
MASTERPROJECTSTAGE TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
CUSTOMER TYPE STRING,
MASTERPROJECTORGANIZATION TYPE STRING,
MASTERPROJECTISCONFIDENTIAL TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
WORKTYPE TYPE STRING,
INDUSTRY TYPE STRING,
PROJECTRISK TYPE STRING,
FINANCIALRISK TYPE STRING,
TECHNICALRISK TYPE STRING,
OVERALLRISK TYPE STRING,
CHANGEREQUEST TYPE STRING,
ISSUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISSUECHANGREQ_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_ISSUECHANGREQ_STR-MANDT sy-vline 
WA_ISSUECHANGREQ_STR-MASTERPROJECTUUID sy-vline 
WA_ISSUECHANGREQ_STR-PROJECTUUID sy-vline 
WA_ISSUECHANGREQ_STR-MASTERPROJECT sy-vline 
WA_ISSUECHANGREQ_STR-MASTERPROJECTNAME sy-vline 
WA_ISSUECHANGREQ_STR-MASTERPROJECTTYPE sy-vline 
WA_ISSUECHANGREQ_STR-MASTERPROJECTSTAGE sy-vline 
WA_ISSUECHANGREQ_STR-STARTDATE sy-vline 
WA_ISSUECHANGREQ_STR-ENDDATE sy-vline 
WA_ISSUECHANGREQ_STR-CUSTOMER sy-vline 
WA_ISSUECHANGREQ_STR-MASTERPROJECTORGANIZATION sy-vline 
WA_ISSUECHANGREQ_STR-MASTERPROJECTISCONFIDENTIAL sy-vline 
WA_ISSUECHANGREQ_STR-COUNTRY sy-vline 
WA_ISSUECHANGREQ_STR-REGION sy-vline 
WA_ISSUECHANGREQ_STR-WORKTYPE sy-vline 
WA_ISSUECHANGREQ_STR-INDUSTRY sy-vline 
WA_ISSUECHANGREQ_STR-PROJECTRISK sy-vline 
WA_ISSUECHANGREQ_STR-FINANCIALRISK sy-vline 
WA_ISSUECHANGREQ_STR-TECHNICALRISK sy-vline 
WA_ISSUECHANGREQ_STR-OVERALLRISK sy-vline 
WA_ISSUECHANGREQ_STR-CHANGEREQUEST sy-vline 
WA_ISSUECHANGREQ_STR-ISSUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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