ABAP Select data from SAP table PIQTRDEGREE_EXT_TXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQTRDEGREE_EXT_TXT
*  INTO TABLE @DATA(IT_PIQTRDEGREE_EXT_TXT2).
*--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_PIQTRDEGREE_EXT_TXT INDEX 1 INTO DATA(WA_PIQTRDEGREE_EXT_TXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQTRDEGREE_EXT_TXT>-DEGREENR = 1.
<PIQTRDEGREE_EXT_TXT>-DEGREEID = 1.
<PIQTRDEGREE_EXT_TXT>-PROGRAMID = 1.
<PIQTRDEGREE_EXT_TXT>-DEGERNFLAG = 1.
<PIQTRDEGREE_EXT_TXT>-DEGDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQTRDEGREE_EXT_TXT-DEGEXTGRADE, sy-vline,
  WA_PIQTRDEGREE_EXT_TXT-DEGEXTSCALEID, sy-vline,
  WA_PIQTRDEGREE_EXT_TXT-DEGHONORS, sy-vline,
  WA_PIQTRDEGREE_EXT_TXT-DEGREESHORT, sy-vline,
  WA_PIQTRDEGREE_EXT_TXT-DEGREESTEXT, sy-vline,
  WA_PIQTRDEGREE_EXT_TXT-PROGRAMSHORT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQTRDEGREE_EXT_TXT 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_PIQTRDEGREE_EXT_TXT 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_PIQTRDEGREE_EXT_TXT INTO WA_PIQTRDEGREE_EXT_TXT.


*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_PIQTRDEGREE_EXT_TXT_STR, 
DEGREENR TYPE STRING,
DEGREEID TYPE STRING,
PROGRAMID TYPE STRING,
DEGERNFLAG TYPE STRING,
DEGDATE TYPE STRING,
DEGEXTGRADE TYPE STRING,
DEGEXTSCALEID TYPE STRING,
DEGHONORS TYPE STRING,
DEGREESHORT TYPE STRING,
DEGREESTEXT TYPE STRING,
PROGRAMSHORT TYPE STRING,
PROGRAMSTEXT TYPE STRING,
DEGEXTGRADETEXT TYPE STRING,
DEGEXTGRADESCALET TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQTRDEGREE_EXT_TXT_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_PIQTRDEGREE_EXT_TXT_STR-DEGREENR sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-DEGREEID sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-PROGRAMID sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-DEGERNFLAG sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-DEGDATE sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-DEGEXTGRADE sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-DEGEXTSCALEID sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-DEGHONORS sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-DEGREESHORT sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-DEGREESTEXT sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-PROGRAMSHORT sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-PROGRAMSTEXT sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-DEGEXTGRADETEXT sy-vline 
WA_PIQTRDEGREE_EXT_TXT_STR-DEGEXTGRADESCALET sy-vline      INTO ld_text SEPARATED BY SPACE.

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