ABAP Select data from SAP table TIM_TMW_MESSAGE_ENTRY_OLD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TIM_TMW_MESSAGE_ENTRY_OLD
*  INTO TABLE @DATA(IT_TIM_TMW_MESSAGE_ENTRY_OLD2).
*--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_TIM_TMW_MESSAGE_ENTRY_OLD INDEX 1 INTO DATA(WA_TIM_TMW_MESSAGE_ENTRY_OLD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TIM_TMW_MESSAGE_ENTRY_OLD>-MSGCAT = 1.
<TIM_TMW_MESSAGE_ENTRY_OLD>-MSGREF = 1.
<TIM_TMW_MESSAGE_ENTRY_OLD>-RECUID = 1.
<TIM_TMW_MESSAGE_ENTRY_OLD>-INT_DOC_NO = 1.
<TIM_TMW_MESSAGE_ENTRY_OLD>-PERNRGROUP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TIM_TMW_MESSAGE_ENTRY_OLD-PERNR, sy-vline,
  WA_TIM_TMW_MESSAGE_ENTRY_OLD-GRUNR, sy-vline,
  WA_TIM_TMW_MESSAGE_ENTRY_OLD-GUI_OBJECT, sy-vline,
  WA_TIM_TMW_MESSAGE_ENTRY_OLD-MSGDELFLG, sy-vline,
  WA_TIM_TMW_MESSAGE_ENTRY_OLD-MSGDAT, sy-vline,
  WA_TIM_TMW_MESSAGE_ENTRY_OLD-MSGID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TIM_TMW_MESSAGE_ENTRY_OLD 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_TIM_TMW_MESSAGE_ENTRY_OLD 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_TIM_TMW_MESSAGE_ENTRY_OLD INTO WA_TIM_TMW_MESSAGE_ENTRY_OLD.


*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_TIM_TMW_MESSAGE_ENTRY_OLD_STR, 
MSGCAT TYPE STRING,
MSGREF TYPE STRING,
RECUID TYPE STRING,
INT_DOC_NO TYPE STRING,
PERNRGROUP TYPE STRING,
PERNR TYPE STRING,
GRUNR TYPE STRING,
GUI_OBJECT TYPE STRING,
MSGDELFLG TYPE STRING,
MSGDAT TYPE STRING,
MSGID TYPE STRING,
MSGTY TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
MSGTEXT TYPE STRING,
MSGCON TYPE STRING,
MSGCONTEXT TYPE STRING,
CONTEXT TYPE STRING,
SUBCONTEXT TYPE STRING,
MSGORIGIN TYPE STRING,
PROGNAME TYPE STRING,
FUNCNAME TYPE STRING,
FORMNAME TYPE STRING,
CLASSNAME TYPE STRING,
METHODNAME TYPE STRING,
MSGFIELD_TAB TYPE STRING,
MSGREFDEP_TAB TYPE STRING,
MSGADDITIONAL TYPE STRING,
MSGPROT TYPE STRING,
LOGNUMBER TYPE STRING,
MSGV1_SRC TYPE STRING,
MSGV2_SRC TYPE STRING,
MSGV3_SRC TYPE STRING,
MSGV4_SRC TYPE STRING,
DETLEVEL TYPE STRING,
PROBCLASS TYPE STRING,
ALSORT TYPE STRING,
TIME_STMP TYPE STRING,
CONTEXT TYPE STRING,
TABNAME TYPE STRING,
VALUE TYPE STRING,
PARAMS TYPE STRING,
T_PAR TYPE STRING,
CALLBACK TYPE STRING,
USEREXITP TYPE STRING,
USEREXITF TYPE STRING,
USEREXITT TYPE STRING,
ALTEXT TYPE STRING,
MSGNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TIM_TMW_MESSAGE_ENTRY_OLD_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_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGCAT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGREF sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-RECUID sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-INT_DOC_NO sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-PERNRGROUP sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-PERNR sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-GRUNR sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-GUI_OBJECT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGDELFLG sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGDAT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGID sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGTY sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGNO sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGV1 sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGV2 sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGV3 sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGV4 sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGTEXT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGCON sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGCONTEXT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-CONTEXT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-SUBCONTEXT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGORIGIN sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-PROGNAME sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-FUNCNAME sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-FORMNAME sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-CLASSNAME sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-METHODNAME sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGFIELD_TAB sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGREFDEP_TAB sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGADDITIONAL sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGPROT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-LOGNUMBER sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGV1_SRC sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGV2_SRC sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGV3_SRC sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGV4_SRC sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-DETLEVEL sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-PROBCLASS sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-ALSORT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-TIME_STMP sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-CONTEXT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-TABNAME sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-VALUE sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-PARAMS sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-T_PAR sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-CALLBACK sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-USEREXITP sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-USEREXITF sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-USEREXITT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-ALTEXT sy-vline 
WA_TIM_TMW_MESSAGE_ENTRY_OLD_STR-MSGNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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