ABAP Select data from SAP table PIQ_GB_UCAS_DEC01 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP PIQ_GB_UCAS_DEC01 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_DEC01. 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_DEC01 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_DEC01 TYPE STANDARD TABLE OF PIQ_GB_UCAS_DEC01,
      WA_PIQ_GB_UCAS_DEC01 TYPE PIQ_GB_UCAS_DEC01,
      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_DEC01> TYPE PIQ_GB_UCAS_DEC01.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PIQ_GB_UCAS_DEC01.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PIQ_GB_UCAS_DEC01
  INTO TABLE IT_PIQ_GB_UCAS_DEC01.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_GB_UCAS_DEC01
*  INTO TABLE @DATA(IT_PIQ_GB_UCAS_DEC012).
*--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_DEC01 INDEX 1 INTO DATA(WA_PIQ_GB_UCAS_DEC012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PIQ_GB_UCAS_DEC01 ASSIGNING <PIQ_GB_UCAS_DEC01>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_GB_UCAS_DEC01>-ST_STUDENT12 = 1.
<PIQ_GB_UCAS_DEC01>-ST_PLVAR = 1.
<PIQ_GB_UCAS_DEC01>-ST_OTYPE = 1.
<PIQ_GB_UCAS_DEC01>-ST_OBJID = 1.
<PIQ_GB_UCAS_DEC01>-ST_SEARK = 1.

ENDLOOP.

LOOP AT IT_PIQ_GB_UCAS_DEC01 INTO WA_PIQ_GB_UCAS_DEC01.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_GB_UCAS_DEC01-ST_NAME, sy-vline,
  WA_PIQ_GB_UCAS_DEC01-ST_NACHN, sy-vline,
  WA_PIQ_GB_UCAS_DEC01-ST_VORNA, sy-vline,
  WA_PIQ_GB_UCAS_DEC01-ST_GBDAT, sy-vline,
  WA_PIQ_GB_UCAS_DEC01-ST_GESCH, sy-vline,
  WA_PIQ_GB_UCAS_DEC01-ST_ANRED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_GB_UCAS_DEC01 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_DEC01 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_DEC01 INTO WA_PIQ_GB_UCAS_DEC01.


*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 PIQST, internal->external for field ST_STUDENT12
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_PIQ_GB_UCAS_DEC01-ST_STUDENT12
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQ_GB_UCAS_DEC01-ST_STUDENT12.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PDATE, internal->external for field ST_GBDAT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_PIQ_GB_UCAS_DEC01-ST_GBDAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQ_GB_UCAS_DEC01-ST_GBDAT.
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_PIQ_GB_UCAS_DEC01_STR, 
ST_STUDENT12 TYPE STRING,
ST_PLVAR TYPE STRING,
ST_OTYPE TYPE STRING,
ST_OBJID TYPE STRING,
ST_SEARK TYPE STRING,
ST_NAME TYPE STRING,
ST_NACHN TYPE STRING,
ST_VORNA TYPE STRING,
ST_GBDAT TYPE STRING,
ST_GESCH TYPE STRING,
ST_ANRED TYPE STRING,
ST_ADAREA TYPE STRING,
SC_SEARK TYPE STRING,
SC_OTYPE TYPE STRING,
SC_OBJID TYPE STRING,
SC_BEGDA TYPE STRING,
SC_ENDDA TYPE STRING,
SC_SHORT TYPE STRING,
SC_TEXT TYPE STRING,
SC_MARVIN TYPE STRING,
SC_MARVIN_OLD TYPE STRING,
CHOICE_NO TYPE STRING,
KEY_DATE TYPE STRING,
IT_TRANSACTION TYPE STRING,
IT_TRANSACTIONT TYPE STRING,
IT_DECISION TYPE STRING,
IT_DECISIONT TYPE STRING,
IT_DECISION_OLD TYPE STRING,
IT_REPLY TYPE STRING,
IT_ENTRY_DATE TYPE STRING,
IT_ENTRY_DATE_OLD TYPE STRING,
IT_ENTRY_POINT TYPE STRING,
IT_ENTRY_POINTT TYPE STRING,
IT_REASON TYPE STRING,
IT_REASONT TYPE STRING,
O_OTYPE TYPE STRING,
O_OBJID TYPE STRING,
O_SEARK TYPE STRING,
O_SHORT TYPE STRING,
O_TEXT TYPE STRING,
O_BEGDA TYPE STRING,
O_ENDDA TYPE STRING,
O_CAMPUS TYPE STRING,
PASSPORTID TYPE STRING,
COPYFORM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_GB_UCAS_DEC01_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_DEC01_STR-ST_STUDENT12 sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-ST_PLVAR sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-ST_OTYPE sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-ST_OBJID sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-ST_SEARK sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-ST_NAME sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-ST_NACHN sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-ST_VORNA sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-ST_GBDAT sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-ST_GESCH sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-ST_ANRED sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-ST_ADAREA sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-SC_SEARK sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-SC_OTYPE sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-SC_OBJID sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-SC_BEGDA sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-SC_ENDDA sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-SC_SHORT sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-SC_TEXT sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-SC_MARVIN sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-SC_MARVIN_OLD sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-CHOICE_NO sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-KEY_DATE sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_TRANSACTION sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_TRANSACTIONT sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_DECISION sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_DECISIONT sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_DECISION_OLD sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_REPLY sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_ENTRY_DATE sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_ENTRY_DATE_OLD sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_ENTRY_POINT sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_ENTRY_POINTT sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_REASON sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-IT_REASONT sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-O_OTYPE sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-O_OBJID sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-O_SEARK sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-O_SHORT sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-O_TEXT sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-O_BEGDA sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-O_ENDDA sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-O_CAMPUS sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-PASSPORTID sy-vline 
WA_PIQ_GB_UCAS_DEC01_STR-COPYFORM sy-vline      INTO ld_text SEPARATED BY SPACE.

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