ABAP Select data from SAP table PIQ_GB_UCAS_REF_SCHOOL 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_REF_SCHOOL 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_REF_SCHOOL. 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_REF_SCHOOL 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_REF_SCHOOL TYPE STANDARD TABLE OF PIQ_GB_UCAS_REF_SCHOOL,
      WA_PIQ_GB_UCAS_REF_SCHOOL TYPE PIQ_GB_UCAS_REF_SCHOOL,
      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_REF_SCHOOL> TYPE PIQ_GB_UCAS_REF_SCHOOL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_GB_UCAS_REF_SCHOOL
*  INTO TABLE @DATA(IT_PIQ_GB_UCAS_REF_SCHOOL2).
*--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_REF_SCHOOL INDEX 1 INTO DATA(WA_PIQ_GB_UCAS_REF_SCHOOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_GB_UCAS_REF_SCHOOL>-MANDT = 1.
<PIQ_GB_UCAS_REF_SCHOOL>-SCHOOL_ID = 1.
<PIQ_GB_UCAS_REF_SCHOOL>-NAME = 1.
<PIQ_GB_UCAS_REF_SCHOOL>-COUNTRY_CODE = 1.
<PIQ_GB_UCAS_REF_SCHOOL>-EST_GRP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_GB_UCAS_REF_SCHOOL-STATUS, sy-vline,
  WA_PIQ_GB_UCAS_REF_SCHOOL-DFE_ID, sy-vline,
  WA_PIQ_GB_UCAS_REF_SCHOOL-NC_ID, sy-vline,
  WA_PIQ_GB_UCAS_REF_SCHOOL-BTEC_ID, sy-vline,
  WA_PIQ_GB_UCAS_REF_SCHOOL-HEAD_NAME, sy-vline,
  WA_PIQ_GB_UCAS_REF_SCHOOL-HEAD_TITLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_GB_UCAS_REF_SCHOOL 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_REF_SCHOOL 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_REF_SCHOOL INTO WA_PIQ_GB_UCAS_REF_SCHOOL.


*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_REF_SCHOOL_STR, 
MANDT TYPE STRING,
SCHOOL_ID TYPE STRING,
NAME TYPE STRING,
COUNTRY_CODE TYPE STRING,
EST_GRP TYPE STRING,
STATUS TYPE STRING,
DFE_ID TYPE STRING,
NC_ID TYPE STRING,
BTEC_ID TYPE STRING,
HEAD_NAME TYPE STRING,
HEAD_TITLE TYPE STRING,
CONT_TITLE TYPE STRING,
CONT_NAME TYPE STRING,
ADDRESS_1 TYPE STRING,
ADDRESS_2 TYPE STRING,
ADDRESS_3 TYPE STRING,
ADDRESS_4 TYPE STRING,
POSTCODE TYPE STRING,
TELNR TYPE STRING,
SCHOOL_TYPE TYPE STRING,
DAY_BOARD TYPE STRING,
SEX TYPE STRING,
DTM_COLL TYPE STRING,
ROLL_NR TYPE STRING,
FULL_TIME TYPE STRING,
FIFTH_FORM TYPE STRING,
SIXTH_FORM TYPE STRING,
HI_EDUCAT TYPE STRING,
WELSH TYPE STRING,
TOWN TYPE STRING,
COUNTY TYPE STRING,
LEA_CODE TYPE STRING,
AEDTM TYPE STRING,
PREV_SCHOOL_ID TYPE STRING,
BASE_YEAR TYPE STRING,
NO_APPLIC TYPE STRING,
NO_ACCEPT TYPE STRING,
FORMS TYPE STRING,
FAX TYPE STRING,
EMAIL TYPE STRING,
UKPRN_NUM TYPE STRING,
SCHOOL_CODE TYPE STRING,
CONTACT_POST TYPE STRING,
ED_EXCEL_NO TYPE STRING,
HIGHER_ED_COUNT TYPE STRING,
MAIL_SORT_CODE TYPE STRING,
ESTABLISH_NO TYPE STRING,
OLD_NAME TYPE STRING,
STATISTICS_DATE TYPE STRING,
STATISTICS_TIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_GB_UCAS_REF_SCHOOL_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_REF_SCHOOL_STR-MANDT sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-SCHOOL_ID sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-NAME sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-COUNTRY_CODE sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-EST_GRP sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-STATUS sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-DFE_ID sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-NC_ID sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-BTEC_ID sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-HEAD_NAME sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-HEAD_TITLE sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-CONT_TITLE sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-CONT_NAME sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-ADDRESS_1 sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-ADDRESS_2 sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-ADDRESS_3 sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-ADDRESS_4 sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-POSTCODE sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-TELNR sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-SCHOOL_TYPE sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-DAY_BOARD sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-SEX sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-DTM_COLL sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-ROLL_NR sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-FULL_TIME sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-FIFTH_FORM sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-SIXTH_FORM sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-HI_EDUCAT sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-WELSH sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-TOWN sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-COUNTY sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-LEA_CODE sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-AEDTM sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-PREV_SCHOOL_ID sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-BASE_YEAR sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-NO_APPLIC sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-NO_ACCEPT sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-FORMS sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-FAX sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-EMAIL sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-UKPRN_NUM sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-SCHOOL_CODE sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-CONTACT_POST sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-ED_EXCEL_NO sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-HIGHER_ED_COUNT sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-MAIL_SORT_CODE sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-ESTABLISH_NO sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-OLD_NAME sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-STATISTICS_DATE sy-vline 
WA_PIQ_GB_UCAS_REF_SCHOOL_STR-STATISTICS_TIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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