ABAP Select data from SAP table PIQSM_BOOKING_CART into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQSM_BOOKING_CART
*  INTO TABLE @DATA(IT_PIQSM_BOOKING_CART2).
*--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_PIQSM_BOOKING_CART INDEX 1 INTO DATA(WA_PIQSM_BOOKING_CART2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQSM_BOOKING_CART>-CONT_PROGRAM = 1.
<PIQSM_BOOKING_CART>-CONT_PROGRAMTYPE = 1.
<PIQSM_BOOKING_CART>-CONT_PERYR = 1.
<PIQSM_BOOKING_CART>-CONT_PERID = 1.
<PIQSM_BOOKING_CART>-SM_OBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQSM_BOOKING_CART-SM_SHORT, sy-vline,
  WA_PIQSM_BOOKING_CART-SM_STEXT, sy-vline,
  WA_PIQSM_BOOKING_CART-SE_OBJID, sy-vline,
  WA_PIQSM_BOOKING_CART-SE_SHORT, sy-vline,
  WA_PIQSM_BOOKING_CART-SE_STEXT, sy-vline,
  WA_PIQSM_BOOKING_CART-D_OBJID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQSM_BOOKING_CART 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_PIQSM_BOOKING_CART 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_PIQSM_BOOKING_CART INTO WA_PIQSM_BOOKING_CART.


*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 CUNIT, internal->external for field CPUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQSM_BOOKING_CART-CPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQSM_BOOKING_CART-CPUNIT.
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_PIQSM_BOOKING_CART_STR, 
CONT_PROGRAM TYPE STRING,
CONT_PROGRAMTYPE TYPE STRING,
CONT_PERYR TYPE STRING,
CONT_PERID TYPE STRING,
SM_OBJID TYPE STRING,
SM_SHORT TYPE STRING,
SM_STEXT TYPE STRING,
SE_OBJID TYPE STRING,
SE_SHORT TYPE STRING,
SE_STEXT TYPE STRING,
D_OBJID TYPE STRING,
D_SHORT TYPE STRING,
D_STEXT TYPE STRING,
E_OBJID TYPE STRING,
E_OTYPE TYPE STRING,
E_SHORT TYPE STRING,
E_STEXT TYPE STRING,
CPMIN TYPE STRING,
CPOPT TYPE STRING,
CPMAX TYPE STRING,
SMSTATUS TYPE STRING,
STORREASON TYPE STRING,
STORDATE TYPE STRING,
CPATTEMP TYPE STRING,
CPGAINED TYPE STRING,
CPUNIT TYPE STRING,
NORM_VAL TYPE STRING,
BOOKDATE TYPE STRING,
BOOKTIME TYPE STRING,
SMRATING TYPE STRING,
CHARGEFREE TYPE STRING,
TRANSFERFLAG TYPE STRING,
PACKNUMBER TYPE STRING,
VARID TYPE STRING,
PERID TYPE STRING,
PERYR TYPE STRING,
ALT_SCALEID TYPE STRING,
ID TYPE STRING,
BOOKREASON TYPE STRING,
ANNULMENT TYPE STRING,
LOCKFLAG TYPE STRING,
COBOK TYPE STRING,
BOOKING_SUBGROUP_ID TYPE STRING,
ATTNO_TW TYPE STRING,
SCALE_TXT TYPE STRING,
PROGRAM_SHORT TYPE STRING,
PROGRAM_TXT TYPE STRING,
PROGRAMTYPE_TXT TYPE STRING,
PERIT TYPE STRING,
PERYT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQSM_BOOKING_CART_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_PIQSM_BOOKING_CART_STR-CONT_PROGRAM sy-vline 
WA_PIQSM_BOOKING_CART_STR-CONT_PROGRAMTYPE sy-vline 
WA_PIQSM_BOOKING_CART_STR-CONT_PERYR sy-vline 
WA_PIQSM_BOOKING_CART_STR-CONT_PERID sy-vline 
WA_PIQSM_BOOKING_CART_STR-SM_OBJID sy-vline 
WA_PIQSM_BOOKING_CART_STR-SM_SHORT sy-vline 
WA_PIQSM_BOOKING_CART_STR-SM_STEXT sy-vline 
WA_PIQSM_BOOKING_CART_STR-SE_OBJID sy-vline 
WA_PIQSM_BOOKING_CART_STR-SE_SHORT sy-vline 
WA_PIQSM_BOOKING_CART_STR-SE_STEXT sy-vline 
WA_PIQSM_BOOKING_CART_STR-D_OBJID sy-vline 
WA_PIQSM_BOOKING_CART_STR-D_SHORT sy-vline 
WA_PIQSM_BOOKING_CART_STR-D_STEXT sy-vline 
WA_PIQSM_BOOKING_CART_STR-E_OBJID sy-vline 
WA_PIQSM_BOOKING_CART_STR-E_OTYPE sy-vline 
WA_PIQSM_BOOKING_CART_STR-E_SHORT sy-vline 
WA_PIQSM_BOOKING_CART_STR-E_STEXT sy-vline 
WA_PIQSM_BOOKING_CART_STR-CPMIN sy-vline 
WA_PIQSM_BOOKING_CART_STR-CPOPT sy-vline 
WA_PIQSM_BOOKING_CART_STR-CPMAX sy-vline 
WA_PIQSM_BOOKING_CART_STR-SMSTATUS sy-vline 
WA_PIQSM_BOOKING_CART_STR-STORREASON sy-vline 
WA_PIQSM_BOOKING_CART_STR-STORDATE sy-vline 
WA_PIQSM_BOOKING_CART_STR-CPATTEMP sy-vline 
WA_PIQSM_BOOKING_CART_STR-CPGAINED sy-vline 
WA_PIQSM_BOOKING_CART_STR-CPUNIT sy-vline 
WA_PIQSM_BOOKING_CART_STR-NORM_VAL sy-vline 
WA_PIQSM_BOOKING_CART_STR-BOOKDATE sy-vline 
WA_PIQSM_BOOKING_CART_STR-BOOKTIME sy-vline 
WA_PIQSM_BOOKING_CART_STR-SMRATING sy-vline 
WA_PIQSM_BOOKING_CART_STR-CHARGEFREE sy-vline 
WA_PIQSM_BOOKING_CART_STR-TRANSFERFLAG sy-vline 
WA_PIQSM_BOOKING_CART_STR-PACKNUMBER sy-vline 
WA_PIQSM_BOOKING_CART_STR-VARID sy-vline 
WA_PIQSM_BOOKING_CART_STR-PERID sy-vline 
WA_PIQSM_BOOKING_CART_STR-PERYR sy-vline 
WA_PIQSM_BOOKING_CART_STR-ALT_SCALEID sy-vline 
WA_PIQSM_BOOKING_CART_STR-ID sy-vline 
WA_PIQSM_BOOKING_CART_STR-BOOKREASON sy-vline 
WA_PIQSM_BOOKING_CART_STR-ANNULMENT sy-vline 
WA_PIQSM_BOOKING_CART_STR-LOCKFLAG sy-vline 
WA_PIQSM_BOOKING_CART_STR-COBOK sy-vline 
WA_PIQSM_BOOKING_CART_STR-BOOKING_SUBGROUP_ID sy-vline 
WA_PIQSM_BOOKING_CART_STR-ATTNO_TW sy-vline 
WA_PIQSM_BOOKING_CART_STR-SCALE_TXT sy-vline 
WA_PIQSM_BOOKING_CART_STR-PROGRAM_SHORT sy-vline 
WA_PIQSM_BOOKING_CART_STR-PROGRAM_TXT sy-vline 
WA_PIQSM_BOOKING_CART_STR-PROGRAMTYPE_TXT sy-vline 
WA_PIQSM_BOOKING_CART_STR-PERIT sy-vline 
WA_PIQSM_BOOKING_CART_STR-PERYT sy-vline      INTO ld_text SEPARATED BY SPACE.

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