ABAP Select data from SAP table PIQ_GB_UCAS_ODL_LIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_GB_UCAS_ODL_LIST
*  INTO TABLE @DATA(IT_PIQ_GB_UCAS_ODL_LIST2).
*--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_PIQ_GB_UCAS_ODL_LIST INDEX 1 INTO DATA(WA_PIQ_GB_UCAS_ODL_LIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_GB_UCAS_ODL_LIST>-INSTCODE = 1.
<PIQ_GB_UCAS_ODL_LIST>-APPLICANT_NO = 1.
<PIQ_GB_UCAS_ODL_LIST>-PERSONALID = 1.
<PIQ_GB_UCAS_ODL_LIST>-SURNAME = 1.
<PIQ_GB_UCAS_ODL_LIST>-FORENAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_GB_UCAS_ODL_LIST-ROUNDNUMBER, sy-vline,
  WA_PIQ_GB_UCAS_ODL_LIST-CHOICENUMBER, sy-vline,
  WA_PIQ_GB_UCAS_ODL_LIST-COURSECODE, sy-vline,
  WA_PIQ_GB_UCAS_ODL_LIST-CAMPUS, sy-vline,
  WA_PIQ_GB_UCAS_ODL_LIST-REPLY, sy-vline,
  WA_PIQ_GB_UCAS_ODL_LIST-YEAROFENTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_GB_UCAS_ODL_LIST 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_PIQ_GB_UCAS_ODL_LIST 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_PIQ_GB_UCAS_ODL_LIST INTO WA_PIQ_GB_UCAS_ODL_LIST.


*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_PIQ_GB_UCAS_ODL_LIST_STR, 
INSTCODE TYPE STRING,
APPLICANT_NO TYPE STRING,
PERSONALID TYPE STRING,
SURNAME TYPE STRING,
FORENAME TYPE STRING,
ROUNDNUMBER TYPE STRING,
CHOICENUMBER TYPE STRING,
COURSECODE TYPE STRING,
CAMPUS TYPE STRING,
REPLY TYPE STRING,
YEAROFENTRY TYPE STRING,
ENTRY_MONTH TYPE STRING,
ENTRYDATE TYPE STRING,
DECISION TYPE STRING,
AEDTM_UCAS TYPE STRING,
APP_DATE TYPE STRING,
APPLICANTSTATUSDESC TYPE STRING,
ROUTE_B TYPE STRING,
ROUTEB_DATE TYPE STRING,
REASON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_GB_UCAS_ODL_LIST_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_PIQ_GB_UCAS_ODL_LIST_STR-INSTCODE sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-APPLICANT_NO sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-PERSONALID sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-SURNAME sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-FORENAME sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-ROUNDNUMBER sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-CHOICENUMBER sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-COURSECODE sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-CAMPUS sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-REPLY sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-YEAROFENTRY sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-ENTRY_MONTH sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-ENTRYDATE sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-DECISION sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-AEDTM_UCAS sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-APP_DATE sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-APPLICANTSTATUSDESC sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-ROUTE_B sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-ROUTEB_DATE sy-vline 
WA_PIQ_GB_UCAS_ODL_LIST_STR-REASON sy-vline      INTO ld_text SEPARATED BY SPACE.

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