ABAP Select data from SAP table PIQ_ST_CQ_SHOW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQ_ST_CQ_SHOW
*  INTO TABLE @DATA(IT_PIQ_ST_CQ_SHOW2).
*--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_PIQ_ST_CQ_SHOW INDEX 1 INTO DATA(WA_PIQ_ST_CQ_SHOW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQ_ST_CQ_SHOW>-PLVAR = 1.
<PIQ_ST_CQ_SHOW>-SM_SCALEID = 1.
<PIQ_ST_CQ_SHOW>-SM_OBJID = 1.
<PIQ_ST_CQ_SHOW>-CS_OBJID = 1.
<PIQ_ST_CQ_SHOW>-ST_OTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQ_ST_CQ_SHOW-ST_OBJID, sy-vline,
  WA_PIQ_ST_CQ_SHOW-ST_SHORT, sy-vline,
  WA_PIQ_ST_CQ_SHOW-ST_STEXT, sy-vline,
  WA_PIQ_ST_CQ_SHOW-SEQNR, sy-vline,
  WA_PIQ_ST_CQ_SHOW-SMSTATUS, sy-vline,
  WA_PIQ_ST_CQ_SHOW-BOOKDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQ_ST_CQ_SHOW 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_PIQ_ST_CQ_SHOW 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_PIQ_ST_CQ_SHOW INTO WA_PIQ_ST_CQ_SHOW.


*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_PIQ_ST_CQ_SHOW-CPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQ_ST_CQ_SHOW-CPUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CQ_CPUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PIQ_ST_CQ_SHOW-CQ_CPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PIQ_ST_CQ_SHOW-CQ_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_PIQ_ST_CQ_SHOW_STR, 
PLVAR TYPE STRING,
SM_SCALEID TYPE STRING,
SM_OBJID TYPE STRING,
CS_OBJID TYPE STRING,
ST_OTYPE TYPE STRING,
ST_OBJID TYPE STRING,
ST_SHORT TYPE STRING,
ST_STEXT TYPE STRING,
SEQNR TYPE STRING,
SMSTATUS TYPE STRING,
BOOKDATE TYPE STRING,
CPATTEMP TYPE STRING,
CPGAINED TYPE STRING,
CPUNIT TYPE STRING,
CP_BEFOR TYPE STRING,
NORM_VAL TYPE STRING,
SHOW_GRADE TYPE STRING,
GRADETEXT TYPE STRING,
SMRATING TYPE STRING,
CQ_OTYPE TYPE STRING,
CQ_OBJID TYPE STRING,
CQ_STEXT TYPE STRING,
CQ_CPGAINED TYPE STRING,
CQ_CPUNIT TYPE STRING,
CQ_SCALEID TYPE STRING,
CQ_NORM_VAL TYPE STRING,
CQ_SHOW_GRADE TYPE STRING,
CQ_RATING TYPE STRING,
CQ_NO_GRADE TYPE STRING,
CQ_NO_CREDIT TYPE STRING,
NO_GRADE TYPE STRING,
NO_CREDIT TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
STATUS TYPE STRING,
BOOKSTAT TYPE STRING,
BOOKED TYPE STRING,
CQ_BEGDA TYPE STRING,
CQ_ENDDA TYPE STRING,
CQ_STATUS TYPE STRING,
CQ_BOOKSTAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQ_ST_CQ_SHOW_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_PIQ_ST_CQ_SHOW_STR-PLVAR sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-SM_SCALEID sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-SM_OBJID sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CS_OBJID sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-ST_OTYPE sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-ST_OBJID sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-ST_SHORT sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-ST_STEXT sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-SEQNR sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-SMSTATUS sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-BOOKDATE sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CPATTEMP sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CPGAINED sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CPUNIT sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CP_BEFOR sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-NORM_VAL sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-SHOW_GRADE sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-GRADETEXT sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-SMRATING sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_OTYPE sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_OBJID sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_STEXT sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_CPGAINED sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_CPUNIT sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_SCALEID sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_NORM_VAL sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_SHOW_GRADE sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_RATING sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_NO_GRADE sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_NO_CREDIT sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-NO_GRADE sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-NO_CREDIT sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-BEGDA sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-ENDDA sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-STATUS sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-BOOKSTAT sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-BOOKED sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_BEGDA sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_ENDDA sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_STATUS sy-vline 
WA_PIQ_ST_CQ_SHOW_STR-CQ_BOOKSTAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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