ABAP Select data from SAP table PIQAGR_FIELDS500 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PIQAGR_FIELDS500 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_FIELDS500. 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_FIELDS500 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_FIELDS500 TYPE STANDARD TABLE OF PIQAGR_FIELDS500,
      WA_PIQAGR_FIELDS500 TYPE PIQAGR_FIELDS500,
      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_FIELDS500> TYPE PIQAGR_FIELDS500.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PIQAGR_FIELDS500.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PIQAGR_FIELDS500
  INTO TABLE IT_PIQAGR_FIELDS500.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQAGR_FIELDS500
*  INTO TABLE @DATA(IT_PIQAGR_FIELDS5002).
*--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_FIELDS500 INDEX 1 INTO DATA(WA_PIQAGR_FIELDS5002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PIQAGR_FIELDS500 ASSIGNING <PIQAGR_FIELDS500>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQAGR_FIELDS500>-STUDENT = 1.
<PIQAGR_FIELDS500>-STUDENTNAME = 1.
<PIQAGR_FIELDS500>-AGR_COMB = 1.
<PIQAGR_FIELDS500>-GRADE_COMB = 1.
<PIQAGR_FIELDS500>-ACAD_COMB = 1.

ENDLOOP.

LOOP AT IT_PIQAGR_FIELDS500 INTO WA_PIQAGR_FIELDS500.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQAGR_FIELDS500-TEXT1, sy-vline,
  WA_PIQAGR_FIELDS500-TEXT2, sy-vline,
  WA_PIQAGR_FIELDS500-TEXT3, sy-vline,
  WA_PIQAGR_FIELDS500-FALSE, sy-vline,
  WA_PIQAGR_FIELDS500-TEXTFALSE, sy-vline,
  WA_PIQAGR_FIELDS500-TRUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQAGR_FIELDS500 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_FIELDS500 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_FIELDS500 INTO WA_PIQAGR_FIELDS500.


*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 STUDENT
CALL FUNCTION 'CONVERSION_EXIT_PIQST_OUTPUT'
  EXPORTING
    input =                      WA_PIQAGR_FIELDS500-STUDENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQAGR_FIELDS500-STUDENT.
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_FIELDS500_STR, 
STUDENT TYPE STRING,
STUDENTNAME TYPE STRING,
AGR_COMB TYPE STRING,
GRADE_COMB TYPE STRING,
ACAD_COMB TYPE STRING,
TEXT1 TYPE STRING,
TEXT2 TYPE STRING,
TEXT3 TYPE STRING,
FALSE TYPE STRING,
TEXTFALSE TYPE STRING,
TRUE TYPE STRING,
TEXTTRUE TYPE STRING,
SMSTATUS TYPE STRING,
STORREASON TYPE STRING,
STORDATE TYPE STRING,
CANCAL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQAGR_FIELDS500_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_FIELDS500_STR-STUDENT sy-vline 
WA_PIQAGR_FIELDS500_STR-STUDENTNAME sy-vline 
WA_PIQAGR_FIELDS500_STR-AGR_COMB sy-vline 
WA_PIQAGR_FIELDS500_STR-GRADE_COMB sy-vline 
WA_PIQAGR_FIELDS500_STR-ACAD_COMB sy-vline 
WA_PIQAGR_FIELDS500_STR-TEXT1 sy-vline 
WA_PIQAGR_FIELDS500_STR-TEXT2 sy-vline 
WA_PIQAGR_FIELDS500_STR-TEXT3 sy-vline 
WA_PIQAGR_FIELDS500_STR-FALSE sy-vline 
WA_PIQAGR_FIELDS500_STR-TEXTFALSE sy-vline 
WA_PIQAGR_FIELDS500_STR-TRUE sy-vline 
WA_PIQAGR_FIELDS500_STR-TEXTTRUE sy-vline 
WA_PIQAGR_FIELDS500_STR-SMSTATUS sy-vline 
WA_PIQAGR_FIELDS500_STR-STORREASON sy-vline 
WA_PIQAGR_FIELDS500_STR-STORDATE sy-vline 
WA_PIQAGR_FIELDS500_STR-CANCAL sy-vline      INTO ld_text SEPARATED BY SPACE.

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