ABAP Select data from SAP table TMSCSYS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TMSCSYS
*  INTO TABLE @DATA(IT_TMSCSYS2).
*--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_TMSCSYS INDEX 1 INTO DATA(WA_TMSCSYS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TMSCSYS>-DOMNAM = 1.
<TMSCSYS>-SYSNAM = 1.
<TMSCSYS>-LIMBO = 1.
<TMSCSYS>-CICFG = 1.
<TMSCSYS>-DLCFG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TMSCSYS-TMSCFG, sy-vline,
  WA_TMSCSYS-WBOCFG, sy-vline,
  WA_TMSCSYS-TPCFG, sy-vline,
  WA_TMSCSYS-EXPORTED, sy-vline,
  WA_TMSCSYS-METHOD, sy-vline,
  WA_TMSCSYS-NFSGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TMSCSYS 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_TMSCSYS 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_TMSCSYS INTO WA_TMSCSYS.


*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_TMSCSYS_STR, 
DOMNAM TYPE STRING,
SYSNAM TYPE STRING,
LIMBO TYPE STRING,
CICFG TYPE STRING,
DLCFG TYPE STRING,
TMSCFG TYPE STRING,
WBOCFG TYPE STRING,
TPCFG TYPE STRING,
EXPORTED TYPE STRING,
METHOD TYPE STRING,
NFSGRP TYPE STRING,
COMSYS TYPE STRING,
TRADIR TYPE STRING,
DESADM TYPE STRING,
DESSUP TYPE STRING,
SUPALLOW TYPE STRING,
HOLDCON TYPE STRING,
SYSTXT TYPE STRING,
TMSREL TYPE STRING,
SAPREL TYPE STRING,
INSTNR TYPE STRING,
MODDAT TYPE STRING,
MODTIM TYPE STRING,
MODUSR TYPE STRING,
DISTSTATES TYPE STRING,
EXTSYS TYPE STRING,
SYSTYP TYPE STRING,
COMCLI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TMSCSYS_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_TMSCSYS_STR-DOMNAM sy-vline 
WA_TMSCSYS_STR-SYSNAM sy-vline 
WA_TMSCSYS_STR-LIMBO sy-vline 
WA_TMSCSYS_STR-CICFG sy-vline 
WA_TMSCSYS_STR-DLCFG sy-vline 
WA_TMSCSYS_STR-TMSCFG sy-vline 
WA_TMSCSYS_STR-WBOCFG sy-vline 
WA_TMSCSYS_STR-TPCFG sy-vline 
WA_TMSCSYS_STR-EXPORTED sy-vline 
WA_TMSCSYS_STR-METHOD sy-vline 
WA_TMSCSYS_STR-NFSGRP sy-vline 
WA_TMSCSYS_STR-COMSYS sy-vline 
WA_TMSCSYS_STR-TRADIR sy-vline 
WA_TMSCSYS_STR-DESADM sy-vline 
WA_TMSCSYS_STR-DESSUP sy-vline 
WA_TMSCSYS_STR-SUPALLOW sy-vline 
WA_TMSCSYS_STR-HOLDCON sy-vline 
WA_TMSCSYS_STR-SYSTXT sy-vline 
WA_TMSCSYS_STR-TMSREL sy-vline 
WA_TMSCSYS_STR-SAPREL sy-vline 
WA_TMSCSYS_STR-INSTNR sy-vline 
WA_TMSCSYS_STR-MODDAT sy-vline 
WA_TMSCSYS_STR-MODTIM sy-vline 
WA_TMSCSYS_STR-MODUSR sy-vline 
WA_TMSCSYS_STR-DISTSTATES sy-vline 
WA_TMSCSYS_STR-EXTSYS sy-vline 
WA_TMSCSYS_STR-SYSTYP sy-vline 
WA_TMSCSYS_STR-COMCLI sy-vline      INTO ld_text SEPARATED BY SPACE.

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