ABAP Select data from SAP table PIQ_GB_UCAS_QUAL_DETAILS 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_QUAL_DETAILS 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_QUAL_DETAILS. 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_QUAL_DETAILS 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_QUAL_DETAILS TYPE STANDARD TABLE OF PIQ_GB_UCAS_QUAL_DETAILS,
      WA_PIQ_GB_UCAS_QUAL_DETAILS TYPE PIQ_GB_UCAS_QUAL_DETAILS,
      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_QUAL_DETAILS> TYPE PIQ_GB_UCAS_QUAL_DETAILS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_GB_UCAS_QUAL_DETAILS
*  INTO TABLE @DATA(IT_PIQ_GB_UCAS_QUAL_DETAILS2).
*--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_QUAL_DETAILS INDEX 1 INTO DATA(WA_PIQ_GB_UCAS_QUAL_DETAILS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_GB_UCAS_QUAL_DETAILS>-INSTCODE = 1.
<PIQ_GB_UCAS_QUAL_DETAILS>-APPLICANT_NO = 1.
<PIQ_GB_UCAS_QUAL_DETAILS>-PERSONALID = 1.
<PIQ_GB_UCAS_QUAL_DETAILS>-ADM_SYSTEM = 1.
<PIQ_GB_UCAS_QUAL_DETAILS>-BOARD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_GB_UCAS_QUAL_DETAILS-CENTRE, sy-vline,
  WA_PIQ_GB_UCAS_QUAL_DETAILS-LEVELTEXT, sy-vline,
  WA_PIQ_GB_UCAS_QUAL_DETAILS-MODULEDETAILS, sy-vline,
  WA_PIQ_GB_UCAS_QUAL_DETAILS-OTHERAWARDINGBODY, sy-vline,
  WA_PIQ_GB_UCAS_QUAL_DETAILS-CLASS, sy-vline,
  WA_PIQ_GB_UCAS_QUAL_DETAILS-RESULTRECEIVED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_GB_UCAS_QUAL_DETAILS 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_QUAL_DETAILS 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_QUAL_DETAILS INTO WA_PIQ_GB_UCAS_QUAL_DETAILS.


*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_QUAL_DETAILS_STR, 
INSTCODE TYPE STRING,
APPLICANT_NO TYPE STRING,
PERSONALID TYPE STRING,
ADM_SYSTEM TYPE STRING,
BOARD TYPE STRING,
CENTRE TYPE STRING,
LEVELTEXT TYPE STRING,
MODULEDETAILS TYPE STRING,
OTHERAWARDINGBODY TYPE STRING,
CLASS TYPE STRING,
RESULTRECEIVED TYPE STRING,
SUBLEVEL TYPE STRING,
SUBJECT TYPE STRING,
ENTRY_MONTH TYPE STRING,
ENTRY_YEAR TYPE STRING,
COMP_MONTH TYPE STRING,
COMP_YEAR TYPE STRING,
AEDTM_UCAS TYPE STRING,
UZEIT_UCAS TYPE STRING,
APPL_SCHEME_CODE TYPE STRING,
CANDIDATE_NO TYPE STRING,
CENTRE_NO TYPE STRING,
LAST_UPDATED TYPE STRING,
LEVEL_CODE TYPE STRING,
PREDICTED_GRADES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_GB_UCAS_QUAL_DETAILS_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_QUAL_DETAILS_STR-INSTCODE sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-APPLICANT_NO sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-PERSONALID sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-ADM_SYSTEM sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-BOARD sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-CENTRE sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-LEVELTEXT sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-MODULEDETAILS sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-OTHERAWARDINGBODY sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-CLASS sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-RESULTRECEIVED sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-SUBLEVEL sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-SUBJECT sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-ENTRY_MONTH sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-ENTRY_YEAR sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-COMP_MONTH sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-COMP_YEAR sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-AEDTM_UCAS sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-UZEIT_UCAS sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-APPL_SCHEME_CODE sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-CANDIDATE_NO sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-CENTRE_NO sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-LAST_UPDATED sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-LEVEL_CODE sy-vline 
WA_PIQ_GB_UCAS_QUAL_DETAILS_STR-PREDICTED_GRADES sy-vline      INTO ld_text SEPARATED BY SPACE.

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