ABAP Select data from SAP table PIQNOTE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQNOTE
*  INTO TABLE @DATA(IT_PIQNOTE2).
*--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_PIQNOTE INDEX 1 INTO DATA(WA_PIQNOTE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQNOTE>-MANDT = 1.
<PIQNOTE>-PLVAR = 1.
<PIQNOTE>-OTYPE = 1.
<PIQNOTE>-OBJID = 1.
<PIQNOTE>-INFTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQNOTE-SUBTY, sy-vline,
  WA_PIQNOTE-ISTAT, sy-vline,
  WA_PIQNOTE-PRIOX, sy-vline,
  WA_PIQNOTE-BEGDA, sy-vline,
  WA_PIQNOTE-ENDDA, sy-vline,
  WA_PIQNOTE-VARYF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQNOTE 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_PIQNOTE 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_PIQNOTE INTO WA_PIQNOTE.


*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 TDSPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PIQNOTE-TDSPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQNOTE-TDSPRAS.
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_PIQNOTE_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
SUTXT TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
FDATE TYPE STRING,
FUSER TYPE STRING,
TRANSCRIPT TYPE STRING,
DEACTIVATE TYPE STRING,
SC_OBJID TYPE STRING,
PROGCVAR TYPE STRING,
ACLEVEL TYPE STRING,
PERYR TYPE STRING,
PERID TYPE STRING,
SCTEXT TYPE STRING,
PROGC_VART TYPE STRING,
ACLEVELT TYPE STRING,
PERYT TYPE STRING,
PERIT TYPE STRING,
TDOBJECT TYPE STRING,
TDID TYPE STRING,
TDNAME TYPE STRING,
TDSPRAS TYPE STRING,
TDTITLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQNOTE_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_PIQNOTE_STR-MANDT sy-vline 
WA_PIQNOTE_STR-PLVAR sy-vline 
WA_PIQNOTE_STR-OTYPE sy-vline 
WA_PIQNOTE_STR-OBJID sy-vline 
WA_PIQNOTE_STR-INFTY sy-vline 
WA_PIQNOTE_STR-SUBTY sy-vline 
WA_PIQNOTE_STR-ISTAT sy-vline 
WA_PIQNOTE_STR-PRIOX sy-vline 
WA_PIQNOTE_STR-BEGDA sy-vline 
WA_PIQNOTE_STR-ENDDA sy-vline 
WA_PIQNOTE_STR-VARYF sy-vline 
WA_PIQNOTE_STR-SEQNR sy-vline 
WA_PIQNOTE_STR-SUTXT sy-vline 
WA_PIQNOTE_STR-AEDTM sy-vline 
WA_PIQNOTE_STR-UNAME sy-vline 
WA_PIQNOTE_STR-FDATE sy-vline 
WA_PIQNOTE_STR-FUSER sy-vline 
WA_PIQNOTE_STR-TRANSCRIPT sy-vline 
WA_PIQNOTE_STR-DEACTIVATE sy-vline 
WA_PIQNOTE_STR-SC_OBJID sy-vline 
WA_PIQNOTE_STR-PROGCVAR sy-vline 
WA_PIQNOTE_STR-ACLEVEL sy-vline 
WA_PIQNOTE_STR-PERYR sy-vline 
WA_PIQNOTE_STR-PERID sy-vline 
WA_PIQNOTE_STR-SCTEXT sy-vline 
WA_PIQNOTE_STR-PROGC_VART sy-vline 
WA_PIQNOTE_STR-ACLEVELT sy-vline 
WA_PIQNOTE_STR-PERYT sy-vline 
WA_PIQNOTE_STR-PERIT sy-vline 
WA_PIQNOTE_STR-TDOBJECT sy-vline 
WA_PIQNOTE_STR-TDID sy-vline 
WA_PIQNOTE_STR-TDNAME sy-vline 
WA_PIQNOTE_STR-TDSPRAS sy-vline 
WA_PIQNOTE_STR-TDTITLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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