ABAP Select data from SAP table ALMTTRNODE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ALMTTRNODE
*  INTO TABLE @DATA(IT_ALMTTRNODE2).
*--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_ALMTTRNODE INDEX 1 INTO DATA(WA_ALMTTRNODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ALMTTRNODE>-MTSYSID = 1.
<ALMTTRNODE>-MTMCNAME = 1.
<ALMTTRNODE>-MTNUMRANGE = 1.
<ALMTTRNODE>-MTUID = 1.
<ALMTTRNODE>-MTCLASS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ALMTTRNODE-MTINDEX, sy-vline,
  WA_ALMTTRNODE-EXTINDEX, sy-vline,
  WA_ALMTTRNODE-CUSTSTATUS, sy-vline,
  WA_ALMTTRNODE-USECLASS, sy-vline,
  WA_ALMTTRNODE-SEVERITY, sy-vline,
  WA_ALMTTRNODE-STATISTREC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ALMTTRNODE 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_ALMTTRNODE 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_ALMTTRNODE INTO WA_ALMTTRNODE.


*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_ALMTTRNODE_STR, 
MTSYSID TYPE STRING,
MTMCNAME TYPE STRING,
MTNUMRANGE TYPE STRING,
MTUID TYPE STRING,
MTCLASS TYPE STRING,
MTINDEX TYPE STRING,
EXTINDEX TYPE STRING,
CUSTSTATUS TYPE STRING,
USECLASS TYPE STRING,
SEVERITY TYPE STRING,
STATISTREC TYPE STRING,
VISUSERLEV TYPE STRING,
KEEPALTYPE TYPE STRING,
KEEPALMAX TYPE STRING,
SECTRGTOOL TYPE STRING,
SECINACTIV TYPE STRING,
WARMUPTIME TYPE STRING,
DTEXTCLASS TYPE STRING,
DTEXTID TYPE STRING,
CUSGRPNAME TYPE STRING,
DELIVERSTA TYPE STRING,
HIGHALVAL TYPE STRING,
HIGHALSEV TYPE STRING,
ALSYSID TYPE STRING,
MSEGNAME TYPE STRING,
ALUNIQNUM TYPE STRING,
ALINDEX TYPE STRING,
ALERTDATE TYPE STRING,
ALERTTIME TYPE STRING,
DUMMYALIGN TYPE STRING,
LASTVALDAT TYPE STRING,
LASTVALTIM TYPE STRING,
LASTVALDUM TYPE STRING,
ACTUALVAL TYPE STRING,
ACTUALSEV TYPE STRING,
VALSYSID TYPE STRING,
VMSEGNAME TYPE STRING,
VALUNIQNUM TYPE STRING,
VALINDEX TYPE STRING,
VALERTDATE TYPE STRING,
VALERTTIME TYPE STRING,
VALERTDUM TYPE STRING,
COUNTOFACT TYPE STRING,
COUNTSUM TYPE STRING,
TDSTATUS TYPE STRING,
TRGTDEFNAM TYPE STRING,
TRGTDEFDSP TYPE STRING,
TRGTDEFSTA TYPE STRING,
TRGTDEFCOS TYPE STRING,
ANATDEFNAM TYPE STRING,
ANATDEFDSP TYPE STRING,
ANATDEFSTA TYPE STRING,
ANATDEFCOS TYPE STRING,
ONATDEFNAM TYPE STRING,
ONATDEFDSP TYPE STRING,
ONATDEFSTA TYPE STRING,
ONATDEFCOS TYPE STRING,
TRGTRUNNAM TYPE STRING,
TRGTRUNSTA TYPE STRING,
TRGTRUNDAT TYPE STRING,
TRGTRUNTIM TYPE STRING,
TRGTRUNDUM TYPE STRING,
TRGTRUNDSP TYPE STRING,
ONATRUNNAM TYPE STRING,
ONATRUNSTA TYPE STRING,
ONATRUNDAT TYPE STRING,
ONATRUNTIM TYPE STRING,
ONATRUNDUM TYPE STRING,
ONATRUNDSP TYPE STRING,
OBJECTNAME TYPE STRING,
MTNAMESHRT TYPE STRING,
MTESUBTYPE TYPE STRING,
CNTALINLST TYPE STRING,
CNTMTCHILD TYPE STRING,
ALTREENUM TYPE STRING,
ALIDXINTRE TYPE STRING,
ALLEVINTRE TYPE STRING,
ALPARINTRE TYPE STRING,
ALMTFULLNM TYPE STRING,
RC TYPE STRING,
EXPAND TYPE STRING,
MARKED TYPE STRING,
TOPNODE TYPE STRING,
MAXVISLEV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ALMTTRNODE_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_ALMTTRNODE_STR-MTSYSID sy-vline 
WA_ALMTTRNODE_STR-MTMCNAME sy-vline 
WA_ALMTTRNODE_STR-MTNUMRANGE sy-vline 
WA_ALMTTRNODE_STR-MTUID sy-vline 
WA_ALMTTRNODE_STR-MTCLASS sy-vline 
WA_ALMTTRNODE_STR-MTINDEX sy-vline 
WA_ALMTTRNODE_STR-EXTINDEX sy-vline 
WA_ALMTTRNODE_STR-CUSTSTATUS sy-vline 
WA_ALMTTRNODE_STR-USECLASS sy-vline 
WA_ALMTTRNODE_STR-SEVERITY sy-vline 
WA_ALMTTRNODE_STR-STATISTREC sy-vline 
WA_ALMTTRNODE_STR-VISUSERLEV sy-vline 
WA_ALMTTRNODE_STR-KEEPALTYPE sy-vline 
WA_ALMTTRNODE_STR-KEEPALMAX sy-vline 
WA_ALMTTRNODE_STR-SECTRGTOOL sy-vline 
WA_ALMTTRNODE_STR-SECINACTIV sy-vline 
WA_ALMTTRNODE_STR-WARMUPTIME sy-vline 
WA_ALMTTRNODE_STR-DTEXTCLASS sy-vline 
WA_ALMTTRNODE_STR-DTEXTID sy-vline 
WA_ALMTTRNODE_STR-CUSGRPNAME sy-vline 
WA_ALMTTRNODE_STR-DELIVERSTA sy-vline 
WA_ALMTTRNODE_STR-HIGHALVAL sy-vline 
WA_ALMTTRNODE_STR-HIGHALSEV sy-vline 
WA_ALMTTRNODE_STR-ALSYSID sy-vline 
WA_ALMTTRNODE_STR-MSEGNAME sy-vline 
WA_ALMTTRNODE_STR-ALUNIQNUM sy-vline 
WA_ALMTTRNODE_STR-ALINDEX sy-vline 
WA_ALMTTRNODE_STR-ALERTDATE sy-vline 
WA_ALMTTRNODE_STR-ALERTTIME sy-vline 
WA_ALMTTRNODE_STR-DUMMYALIGN sy-vline 
WA_ALMTTRNODE_STR-LASTVALDAT sy-vline 
WA_ALMTTRNODE_STR-LASTVALTIM sy-vline 
WA_ALMTTRNODE_STR-LASTVALDUM sy-vline 
WA_ALMTTRNODE_STR-ACTUALVAL sy-vline 
WA_ALMTTRNODE_STR-ACTUALSEV sy-vline 
WA_ALMTTRNODE_STR-VALSYSID sy-vline 
WA_ALMTTRNODE_STR-VMSEGNAME sy-vline 
WA_ALMTTRNODE_STR-VALUNIQNUM sy-vline 
WA_ALMTTRNODE_STR-VALINDEX sy-vline 
WA_ALMTTRNODE_STR-VALERTDATE sy-vline 
WA_ALMTTRNODE_STR-VALERTTIME sy-vline 
WA_ALMTTRNODE_STR-VALERTDUM sy-vline 
WA_ALMTTRNODE_STR-COUNTOFACT sy-vline 
WA_ALMTTRNODE_STR-COUNTSUM sy-vline 
WA_ALMTTRNODE_STR-TDSTATUS sy-vline 
WA_ALMTTRNODE_STR-TRGTDEFNAM sy-vline 
WA_ALMTTRNODE_STR-TRGTDEFDSP sy-vline 
WA_ALMTTRNODE_STR-TRGTDEFSTA sy-vline 
WA_ALMTTRNODE_STR-TRGTDEFCOS sy-vline 
WA_ALMTTRNODE_STR-ANATDEFNAM sy-vline 
WA_ALMTTRNODE_STR-ANATDEFDSP sy-vline 
WA_ALMTTRNODE_STR-ANATDEFSTA sy-vline 
WA_ALMTTRNODE_STR-ANATDEFCOS sy-vline 
WA_ALMTTRNODE_STR-ONATDEFNAM sy-vline 
WA_ALMTTRNODE_STR-ONATDEFDSP sy-vline 
WA_ALMTTRNODE_STR-ONATDEFSTA sy-vline 
WA_ALMTTRNODE_STR-ONATDEFCOS sy-vline 
WA_ALMTTRNODE_STR-TRGTRUNNAM sy-vline 
WA_ALMTTRNODE_STR-TRGTRUNSTA sy-vline 
WA_ALMTTRNODE_STR-TRGTRUNDAT sy-vline 
WA_ALMTTRNODE_STR-TRGTRUNTIM sy-vline 
WA_ALMTTRNODE_STR-TRGTRUNDUM sy-vline 
WA_ALMTTRNODE_STR-TRGTRUNDSP sy-vline 
WA_ALMTTRNODE_STR-ONATRUNNAM sy-vline 
WA_ALMTTRNODE_STR-ONATRUNSTA sy-vline 
WA_ALMTTRNODE_STR-ONATRUNDAT sy-vline 
WA_ALMTTRNODE_STR-ONATRUNTIM sy-vline 
WA_ALMTTRNODE_STR-ONATRUNDUM sy-vline 
WA_ALMTTRNODE_STR-ONATRUNDSP sy-vline 
WA_ALMTTRNODE_STR-OBJECTNAME sy-vline 
WA_ALMTTRNODE_STR-MTNAMESHRT sy-vline 
WA_ALMTTRNODE_STR-MTESUBTYPE sy-vline 
WA_ALMTTRNODE_STR-CNTALINLST sy-vline 
WA_ALMTTRNODE_STR-CNTMTCHILD sy-vline 
WA_ALMTTRNODE_STR-ALTREENUM sy-vline 
WA_ALMTTRNODE_STR-ALIDXINTRE sy-vline 
WA_ALMTTRNODE_STR-ALLEVINTRE sy-vline 
WA_ALMTTRNODE_STR-ALPARINTRE sy-vline 
WA_ALMTTRNODE_STR-ALMTFULLNM sy-vline 
WA_ALMTTRNODE_STR-RC sy-vline 
WA_ALMTTRNODE_STR-EXPAND sy-vline 
WA_ALMTTRNODE_STR-MARKED sy-vline 
WA_ALMTTRNODE_STR-TOPNODE sy-vline 
WA_ALMTTRNODE_STR-MAXVISLEV sy-vline      INTO ld_text SEPARATED BY SPACE.

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