ABAP Select data from SAP table PIQAGR_CQRANKING_QUALS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQAGR_CQRANKING_QUALS
*  INTO TABLE @DATA(IT_PIQAGR_CQRANKING_QUALS2).
*--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_PIQAGR_CQRANKING_QUALS INDEX 1 INTO DATA(WA_PIQAGR_CQRANKING_QUALS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQAGR_CQRANKING_QUALS>-STUDENT_ID = 1.
<PIQAGR_CQRANKING_QUALS>-NORMVAL = 1.
<PIQAGR_CQRANKING_QUALS>-GRADESYMBOL = 1.
<PIQAGR_CQRANKING_QUALS>-SCALE = 1.
<PIQAGR_CQRANKING_QUALS>-CQNOTE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQAGR_CQRANKING_QUALS-CONF_COMMENT, sy-vline,
  WA_PIQAGR_CQRANKING_QUALS-CONFER_DATE, sy-vline,
  WA_PIQAGR_CQRANKING_QUALS-AYEAR, sy-vline,
  WA_PIQAGR_CQRANKING_QUALS-APERIOD, sy-vline,
  WA_PIQAGR_CQRANKING_QUALS-VALID_FROM, sy-vline,
  WA_PIQAGR_CQRANKING_QUALS-VALID_TO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQAGR_CQRANKING_QUALS 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_PIQAGR_CQRANKING_QUALS 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_PIQAGR_CQRANKING_QUALS INTO WA_PIQAGR_CQRANKING_QUALS.


*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 ISOLA, internal->external for field FINALW_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PIQAGR_CQRANKING_QUALS-FINALW_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQAGR_CQRANKING_QUALS-FINALW_LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field FINALW_LANGUALT
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PIQAGR_CQRANKING_QUALS-FINALW_LANGUALT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQAGR_CQRANKING_QUALS-FINALW_LANGUALT.
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_PIQAGR_CQRANKING_QUALS_STR, 
STUDENT_ID TYPE STRING,
NORMVAL TYPE STRING,
GRADESYMBOL TYPE STRING,
SCALE TYPE STRING,
CQNOTE TYPE STRING,
CONF_COMMENT TYPE STRING,
CONFER_DATE TYPE STRING,
AYEAR TYPE STRING,
APERIOD TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
TRANSFERRED TYPE STRING,
CQ_ID TYPE STRING,
PERIDFORCQ TYPE STRING,
PERIDFORCQUNIT TYPE STRING,
REFOBJ_OTYPE TYPE STRING,
REFOBJ_REALO TYPE STRING,
COBOK TYPE STRING,
STAGE TYPE STRING,
REFPROC_GUIDTYPE TYPE STRING,
REFPROC_GUID TYPE STRING,
DIPLOMANAME TYPE STRING,
FINALW_ID TYPE STRING,
FINALW_TITLE TYPE STRING,
FINALW_LANGU TYPE STRING,
FINALW_TITLEALT TYPE STRING,
FINALW_LANGUALT TYPE STRING,
ACADHONOR_SYM TYPE STRING,
ACADHONOR_GRADE TYPE STRING,
ACADHONOR_SCALE TYPE STRING,
NOT_COMPLETED TYPE STRING,
REGNUM TYPE STRING,
CQSHORT TYPE STRING,
CQSTEXT TYPE STRING,
REFOBJSHORT TYPE STRING,
REFOBJSTEXT TYPE STRING,
ID TYPE STRING,
PERIDFORCQUNITTXT TYPE STRING,
AYEARTXT TYPE STRING,
APERIODTXT TYPE STRING,
STAGETXT TYPE STRING,
CESHORT TYPE STRING,
CESTEXT TYPE STRING,
RANK1 TYPE STRING,
RANK2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQAGR_CQRANKING_QUALS_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_PIQAGR_CQRANKING_QUALS_STR-STUDENT_ID sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-NORMVAL sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-GRADESYMBOL sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-SCALE sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-CQNOTE sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-CONF_COMMENT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-CONFER_DATE sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-AYEAR sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-APERIOD sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-VALID_FROM sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-VALID_TO sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-TRANSFERRED sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-CQ_ID sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-PERIDFORCQ sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-PERIDFORCQUNIT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-REFOBJ_OTYPE sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-REFOBJ_REALO sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-COBOK sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-STAGE sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-REFPROC_GUIDTYPE sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-REFPROC_GUID sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-DIPLOMANAME sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-FINALW_ID sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-FINALW_TITLE sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-FINALW_LANGU sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-FINALW_TITLEALT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-FINALW_LANGUALT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-ACADHONOR_SYM sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-ACADHONOR_GRADE sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-ACADHONOR_SCALE sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-NOT_COMPLETED sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-REGNUM sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-CQSHORT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-CQSTEXT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-REFOBJSHORT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-REFOBJSTEXT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-ID sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-PERIDFORCQUNITTXT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-AYEARTXT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-APERIODTXT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-STAGETXT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-CESHORT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-CESTEXT sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-RANK1 sy-vline 
WA_PIQAGR_CQRANKING_QUALS_STR-RANK2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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