ABAP Select data from SAP table PIQ_GB_UCAS_CHOICES 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_CHOICES 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_CHOICES. 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_CHOICES 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_CHOICES TYPE STANDARD TABLE OF PIQ_GB_UCAS_CHOICES,
      WA_PIQ_GB_UCAS_CHOICES TYPE PIQ_GB_UCAS_CHOICES,
      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_CHOICES> TYPE PIQ_GB_UCAS_CHOICES.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_GB_UCAS_CHOICES
*  INTO TABLE @DATA(IT_PIQ_GB_UCAS_CHOICES2).
*--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_CHOICES INDEX 1 INTO DATA(WA_PIQ_GB_UCAS_CHOICES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_GB_UCAS_CHOICES>-CHOICE_NO = 1.
<PIQ_GB_UCAS_CHOICES>-INSTITUTION = 1.
<PIQ_GB_UCAS_CHOICES>-CAMPUS = 1.
<PIQ_GB_UCAS_CHOICES>-COURSE = 1.
<PIQ_GB_UCAS_CHOICES>-COURSE_OBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_GB_UCAS_CHOICES-COURSE_DESC, sy-vline,
  WA_PIQ_GB_UCAS_CHOICES-ENTRY_POINT, sy-vline,
  WA_PIQ_GB_UCAS_CHOICES-PREV_COURSE, sy-vline,
  WA_PIQ_GB_UCAS_CHOICES-FACULTY, sy-vline,
  WA_PIQ_GB_UCAS_CHOICES-DECISION, sy-vline,
  WA_PIQ_GB_UCAS_CHOICES-DECISIONT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_GB_UCAS_CHOICES 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_CHOICES 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_CHOICES INTO WA_PIQ_GB_UCAS_CHOICES.


*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_CHOICES_STR, 
CHOICE_NO TYPE STRING,
INSTITUTION TYPE STRING,
CAMPUS TYPE STRING,
COURSE TYPE STRING,
COURSE_OBJID TYPE STRING,
COURSE_DESC TYPE STRING,
ENTRY_POINT TYPE STRING,
PREV_COURSE TYPE STRING,
FACULTY TYPE STRING,
DECISION TYPE STRING,
DECISIONT TYPE STRING,
REPLY TYPE STRING,
REPLYT TYPE STRING,
CONDITIONS TYPE STRING,
CHOICE_CANCEL TYPE STRING,
AEDTM_UCAS TYPE STRING,
UCAS_ACTION TYPE STRING,
ENTRY_DATE TYPE STRING,
HOME_INDIC TYPE STRING,
INTERV_PRIO TYPE STRING,
AMENDMENT TYPE STRING,
CONF_STATUS TYPE STRING,
CONF_HIST TYPE STRING,
SUBSTITUTION TYPE STRING,
APPL_SCHEME_CODE TYPE STRING,
OFFER_LEVEL TYPE STRING,
OFFER_LEVELT TYPE STRING,
ENTRY_YEAR TYPE STRING,
FURTHR_DETAILS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_GB_UCAS_CHOICES_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_CHOICES_STR-CHOICE_NO sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-INSTITUTION sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-CAMPUS sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-COURSE sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-COURSE_OBJID sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-COURSE_DESC sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-ENTRY_POINT sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-PREV_COURSE sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-FACULTY sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-DECISION sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-DECISIONT sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-REPLY sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-REPLYT sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-CONDITIONS sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-CHOICE_CANCEL sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-AEDTM_UCAS sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-UCAS_ACTION sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-ENTRY_DATE sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-HOME_INDIC sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-INTERV_PRIO sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-AMENDMENT sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-CONF_STATUS sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-CONF_HIST sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-SUBSTITUTION sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-APPL_SCHEME_CODE sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-OFFER_LEVEL sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-OFFER_LEVELT sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-ENTRY_YEAR sy-vline 
WA_PIQ_GB_UCAS_CHOICES_STR-FURTHR_DETAILS sy-vline      INTO ld_text SEPARATED BY SPACE.

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