ABAP Select data from SAP table MSSINDMISC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSSINDMISC
*  INTO TABLE @DATA(IT_MSSINDMISC2).
*--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_MSSINDMISC INDEX 1 INTO DATA(WA_MSSINDMISC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MSSINDMISC>-DEPTH = 1.
<MSSINDMISC>-ROWMINLEN = 1.
<MSSINDMISC>-ROWMAXLEN = 1.
<MSSINDMISC>-ROWMODCTR = 1.
<MSSINDMISC>-AUTOSTATS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MSSINDMISC-STATSDATE, sy-vline,
  WA_MSSINDMISC-DATASZ, sy-vline,
  WA_MSSINDMISC-RESERVEDSZ, sy-vline,
  WA_MSSINDMISC-USEDSZ, sy-vline,
  WA_MSSINDMISC-COMPRESSION, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_MSSINDMISC 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_MSSINDMISC 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_MSSINDMISC INTO WA_MSSINDMISC.


*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_MSSINDMISC_STR, 
DEPTH TYPE STRING,
ROWMINLEN TYPE STRING,
ROWMAXLEN TYPE STRING,
ROWMODCTR TYPE STRING,
AUTOSTATS TYPE STRING,
STATSDATE TYPE STRING,
DATASZ TYPE STRING,
RESERVEDSZ TYPE STRING,
USEDSZ TYPE STRING,
COMPRESSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MSSINDMISC_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_MSSINDMISC_STR-DEPTH sy-vline 
WA_MSSINDMISC_STR-ROWMINLEN sy-vline 
WA_MSSINDMISC_STR-ROWMAXLEN sy-vline 
WA_MSSINDMISC_STR-ROWMODCTR sy-vline 
WA_MSSINDMISC_STR-AUTOSTATS sy-vline 
WA_MSSINDMISC_STR-STATSDATE sy-vline 
WA_MSSINDMISC_STR-DATASZ sy-vline 
WA_MSSINDMISC_STR-RESERVEDSZ sy-vline 
WA_MSSINDMISC_STR-USEDSZ sy-vline 
WA_MSSINDMISC_STR-COMPRESSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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