ABAP Select data from SAP table PIQAPPANST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQAPPANST
*  INTO TABLE @DATA(IT_PIQAPPANST2).
*--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_PIQAPPANST INDEX 1 INTO DATA(WA_PIQAPPANST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQAPPANST>-ANST_TYP = 1.
<PIQAPPANST>-ANST_TYPT = 1.
<PIQAPPANST>-ANST_VORN = 1.
<PIQAPPANST>-ANST_NACHN = 1.
<PIQAPPANST>-ANST_KENZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQAPPANST-ANST_KENZ2, sy-vline,
  WA_PIQAPPANST-ANST_KENZ2_TEXT, sy-vline,
  WA_PIQAPPANST-ANST_SHORT, sy-vline,
  WA_PIQAPPANST-ANST_STEXT, sy-vline,
  WA_PIQAPPANST-MANDT, sy-vline,
  WA_PIQAPPANST-PLVAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQAPPANST 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_PIQAPPANST 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_PIQAPPANST INTO WA_PIQAPPANST.


*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_PIQAPPANST_STR, 
ANST_TYP TYPE STRING,
ANST_TYPT TYPE STRING,
ANST_VORN TYPE STRING,
ANST_NACHN TYPE STRING,
ANST_KENZ TYPE STRING,
ANST_KENZ2 TYPE STRING,
ANST_KENZ2_TEXT TYPE STRING,
ANST_SHORT TYPE STRING,
ANST_STEXT TYPE STRING,
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQAPPANST_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_PIQAPPANST_STR-ANST_TYP sy-vline 
WA_PIQAPPANST_STR-ANST_TYPT sy-vline 
WA_PIQAPPANST_STR-ANST_VORN sy-vline 
WA_PIQAPPANST_STR-ANST_NACHN sy-vline 
WA_PIQAPPANST_STR-ANST_KENZ sy-vline 
WA_PIQAPPANST_STR-ANST_KENZ2 sy-vline 
WA_PIQAPPANST_STR-ANST_KENZ2_TEXT sy-vline 
WA_PIQAPPANST_STR-ANST_SHORT sy-vline 
WA_PIQAPPANST_STR-ANST_STEXT sy-vline 
WA_PIQAPPANST_STR-MANDT sy-vline 
WA_PIQAPPANST_STR-PLVAR sy-vline 
WA_PIQAPPANST_STR-OTYPE sy-vline 
WA_PIQAPPANST_STR-OBJID sy-vline 
WA_PIQAPPANST_STR-SUBTY sy-vline 
WA_PIQAPPANST_STR-ISTAT sy-vline 
WA_PIQAPPANST_STR-BEGDA sy-vline 
WA_PIQAPPANST_STR-ENDDA sy-vline 
WA_PIQAPPANST_STR-VARYF sy-vline 
WA_PIQAPPANST_STR-SEQNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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