ABAP Select data from SAP table JITPRINT_PICK_SPOOL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JITPRINT_PICK_SPOOL
*  INTO TABLE @DATA(IT_JITPRINT_PICK_SPOOL2).
*--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_JITPRINT_PICK_SPOOL INDEX 1 INTO DATA(WA_JITPRINT_PICK_SPOOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JITPRINT_PICK_SPOOL>-LFDN = 1.
<JITPRINT_PICK_SPOOL>-SEQNR = 1.
<JITPRINT_PICK_SPOOL>-PRODN = 1.
<JITPRINT_PICK_SPOOL>-LIUMF = 1.
<JITPRINT_PICK_SPOOL>-MDV01 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JITPRINT_PICK_SPOOL-GRPIN, sy-vline,
  WA_JITPRINT_PICK_SPOOL-PDATUM, sy-vline,
  WA_JITPRINT_PICK_SPOOL-PZEIT, sy-vline,
  WA_JITPRINT_PICK_SPOOL-EDATUM, sy-vline,
  WA_JITPRINT_PICK_SPOOL-EZEIT, sy-vline,
  WA_JITPRINT_PICK_SPOOL-IDATUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JITPRINT_PICK_SPOOL 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_JITPRINT_PICK_SPOOL 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_JITPRINT_PICK_SPOOL INTO WA_JITPRINT_PICK_SPOOL.


*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 MATN1, internal->external for field LIUMF
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_JITPRINT_PICK_SPOOL-LIUMF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JITPRINT_PICK_SPOOL-LIUMF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_JITPRINT_PICK_SPOOL-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_JITPRINT_PICK_SPOOL-KUNNR.
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_JITPRINT_PICK_SPOOL_STR, 
LFDN TYPE STRING,
SEQNR TYPE STRING,
PRODN TYPE STRING,
LIUMF TYPE STRING,
MDV01 TYPE STRING,
GRPIN TYPE STRING,
PDATUM TYPE STRING,
PZEIT TYPE STRING,
EDATUM TYPE STRING,
EZEIT TYPE STRING,
IDATUM TYPE STRING,
IZEIT TYPE STRING,
DDATUM TYPE STRING,
DZEIT TYPE STRING,
RDATUM TYPE STRING,
RZEIT TYPE STRING,
KUNNR TYPE STRING,
ABLAD TYPE STRING,
FLDPO TYPE STRING,
PRODN_BC TYPE STRING,
GRPIN_BC TYPE STRING,
CUSTTX TYPE STRING,
CUSTPG1 TYPE STRING,
CUSTPG2 TYPE STRING,
CUSTPGD1 TYPE STRING,
CUSTPGD2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JITPRINT_PICK_SPOOL_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_JITPRINT_PICK_SPOOL_STR-LFDN sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-SEQNR sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-PRODN sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-LIUMF sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-MDV01 sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-GRPIN sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-PDATUM sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-PZEIT sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-EDATUM sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-EZEIT sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-IDATUM sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-IZEIT sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-DDATUM sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-DZEIT sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-RDATUM sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-RZEIT sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-KUNNR sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-ABLAD sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-FLDPO sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-PRODN_BC sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-GRPIN_BC sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-CUSTTX sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-CUSTPG1 sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-CUSTPG2 sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-CUSTPGD1 sy-vline 
WA_JITPRINT_PICK_SPOOL_STR-CUSTPGD2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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