ABAP Select data from SAP table PIQDB_STBOOK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQDB_STBOOK
*  INTO TABLE @DATA(IT_PIQDB_STBOOK2).
*--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_PIQDB_STBOOK INDEX 1 INTO DATA(WA_PIQDB_STBOOK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQDB_STBOOK>-MANDT = 1.
<PIQDB_STBOOK>-PLVAR = 1.
<PIQDB_STBOOK>-ST_OBJID = 1.
<PIQDB_STBOOK>-AW_OTYPE = 1.
<PIQDB_STBOOK>-AW_OBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQDB_STBOOK-ISTAT, sy-vline,
  WA_PIQDB_STBOOK-ACAD_PROCESS, sy-vline,
  WA_PIQDB_STBOOK-ACAD_RELN, sy-vline,
  WA_PIQDB_STBOOK-BEGDA, sy-vline,
  WA_PIQDB_STBOOK-ENDDA, sy-vline,
  WA_PIQDB_STBOOK-PRIOX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQDB_STBOOK 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_PIQDB_STBOOK 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_PIQDB_STBOOK INTO WA_PIQDB_STBOOK.


*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_PIQDB_STBOOK-CPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQDB_STBOOK-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_PIQDB_STBOOK_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
ST_OBJID TYPE STRING,
AW_OTYPE TYPE STRING,
AW_OBJID TYPE STRING,
ISTAT TYPE STRING,
ACAD_PROCESS TYPE STRING,
ACAD_RELN TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
PRIOX TYPE STRING,
ID TYPE STRING,
PACKNUMBER TYPE STRING,
AEDTM TYPE STRING,
UNAME 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,
VARID TYPE STRING,
PERID TYPE STRING,
PERYR TYPE STRING,
ALT_SCALEID TYPE STRING,
BOOKREASON TYPE STRING,
ANNULMENT TYPE STRING,
LOCKFLAG TYPE STRING,
COBOK TYPE STRING,
BOOKING_SUBGROUP_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQDB_STBOOK_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_PIQDB_STBOOK_STR-MANDT sy-vline 
WA_PIQDB_STBOOK_STR-PLVAR sy-vline 
WA_PIQDB_STBOOK_STR-ST_OBJID sy-vline 
WA_PIQDB_STBOOK_STR-AW_OTYPE sy-vline 
WA_PIQDB_STBOOK_STR-AW_OBJID sy-vline 
WA_PIQDB_STBOOK_STR-ISTAT sy-vline 
WA_PIQDB_STBOOK_STR-ACAD_PROCESS sy-vline 
WA_PIQDB_STBOOK_STR-ACAD_RELN sy-vline 
WA_PIQDB_STBOOK_STR-BEGDA sy-vline 
WA_PIQDB_STBOOK_STR-ENDDA sy-vline 
WA_PIQDB_STBOOK_STR-PRIOX sy-vline 
WA_PIQDB_STBOOK_STR-ID sy-vline 
WA_PIQDB_STBOOK_STR-PACKNUMBER sy-vline 
WA_PIQDB_STBOOK_STR-AEDTM sy-vline 
WA_PIQDB_STBOOK_STR-UNAME sy-vline 
WA_PIQDB_STBOOK_STR-SMSTATUS sy-vline 
WA_PIQDB_STBOOK_STR-STORREASON sy-vline 
WA_PIQDB_STBOOK_STR-STORDATE sy-vline 
WA_PIQDB_STBOOK_STR-CPATTEMP sy-vline 
WA_PIQDB_STBOOK_STR-CPGAINED sy-vline 
WA_PIQDB_STBOOK_STR-CPUNIT sy-vline 
WA_PIQDB_STBOOK_STR-NORM_VAL sy-vline 
WA_PIQDB_STBOOK_STR-BOOKDATE sy-vline 
WA_PIQDB_STBOOK_STR-BOOKTIME sy-vline 
WA_PIQDB_STBOOK_STR-SMRATING sy-vline 
WA_PIQDB_STBOOK_STR-CHARGEFREE sy-vline 
WA_PIQDB_STBOOK_STR-TRANSFERFLAG sy-vline 
WA_PIQDB_STBOOK_STR-VARID sy-vline 
WA_PIQDB_STBOOK_STR-PERID sy-vline 
WA_PIQDB_STBOOK_STR-PERYR sy-vline 
WA_PIQDB_STBOOK_STR-ALT_SCALEID sy-vline 
WA_PIQDB_STBOOK_STR-BOOKREASON sy-vline 
WA_PIQDB_STBOOK_STR-ANNULMENT sy-vline 
WA_PIQDB_STBOOK_STR-LOCKFLAG sy-vline 
WA_PIQDB_STBOOK_STR-COBOK sy-vline 
WA_PIQDB_STBOOK_STR-BOOKING_SUBGROUP_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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