ABAP Select data from SAP table MSQSAPSULK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSQSAPSULK
*  INTO TABLE @DATA(IT_MSQSAPSULK2).
*--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_MSQSAPSULK INDEX 1 INTO DATA(WA_MSQSAPSULK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MSQSAPSULK>-DURATION = 1.
<MSQSAPSULK>-START_DATE = 1.
<MSQSAPSULK>-SPID = 1.
<MSQSAPSULK>-TABLENAME = 1.
<MSQSAPSULK>-LCKNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MSQSAPSULK-KPID, sy-vline,
  WA_MSQSAPSULK-BLOKSPID, sy-vline,
  WA_MSQSAPSULK-LCKRSC, sy-vline,
  WA_MSQSAPSULK-LCKTYPE, sy-vline,
  WA_MSQSAPSULK-DBASENAME, sy-vline,
  WA_MSQSAPSULK-INDNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MSQSAPSULK 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_MSQSAPSULK 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_MSQSAPSULK INTO WA_MSQSAPSULK.


*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_MSQSAPSULK_STR, 
DURATION TYPE STRING,
START_DATE TYPE STRING,
SPID TYPE STRING,
TABLENAME TYPE STRING,
LCKNAME TYPE STRING,
KPID TYPE STRING,
BLOKSPID TYPE STRING,
LCKRSC TYPE STRING,
LCKTYPE TYPE STRING,
DBASENAME TYPE STRING,
INDNAME TYPE STRING,
LCKSTATUS TYPE STRING,
HOSTNAME TYPE STRING,
CONNECTTYP TYPE STRING,
WAITTYPE TYPE STRING,
COMMAND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MSQSAPSULK_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_MSQSAPSULK_STR-DURATION sy-vline 
WA_MSQSAPSULK_STR-START_DATE sy-vline 
WA_MSQSAPSULK_STR-SPID sy-vline 
WA_MSQSAPSULK_STR-TABLENAME sy-vline 
WA_MSQSAPSULK_STR-LCKNAME sy-vline 
WA_MSQSAPSULK_STR-KPID sy-vline 
WA_MSQSAPSULK_STR-BLOKSPID sy-vline 
WA_MSQSAPSULK_STR-LCKRSC sy-vline 
WA_MSQSAPSULK_STR-LCKTYPE sy-vline 
WA_MSQSAPSULK_STR-DBASENAME sy-vline 
WA_MSQSAPSULK_STR-INDNAME sy-vline 
WA_MSQSAPSULK_STR-LCKSTATUS sy-vline 
WA_MSQSAPSULK_STR-HOSTNAME sy-vline 
WA_MSQSAPSULK_STR-CONNECTTYP sy-vline 
WA_MSQSAPSULK_STR-WAITTYPE sy-vline 
WA_MSQSAPSULK_STR-COMMAND sy-vline      INTO ld_text SEPARATED BY SPACE.

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