ABAP Select data from SAP table TRMMAPP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TRMMAPP
*  INTO TABLE @DATA(IT_TRMMAPP2).
*--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_TRMMAPP INDEX 1 INTO DATA(WA_TRMMAPP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TRMMAPP>-UNAME = 1.
<TRMMAPP>-SLANGUAGE = 1.
<TRMMAPP>-TLANGUAGE = 1.
<TRMMAPP>-CDATE = 1.
<TRMMAPP>-CTIME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TRMMAPP-CHECK_USER, sy-vline,
  WA_TRMMAPP-PPUSER, sy-vline,
  WA_TRMMAPP-CHECK_DATE, sy-vline,
  WA_TRMMAPP-IDATE1, sy-vline,
  WA_TRMMAPP-IDATE2, sy-vline,
  WA_TRMMAPP-SMODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TRMMAPP 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_TRMMAPP 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_TRMMAPP INTO WA_TRMMAPP.


*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.

*Conversion exit ISOLA, internal->external for field SLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_TRMMAPP-SLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRMMAPP-SLANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TLANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_TRMMAPP-TLANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TRMMAPP-TLANGUAGE.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TRMMAPP_STR, 
UNAME TYPE STRING,
SLANGUAGE TYPE STRING,
TLANGUAGE TYPE STRING,
CDATE TYPE STRING,
CTIME TYPE STRING,
CHECK_USER TYPE STRING,
PPUSER TYPE STRING,
CHECK_DATE TYPE STRING,
IDATE1 TYPE STRING,
IDATE2 TYPE STRING,
SMODE TYPE STRING,
TMODE TYPE STRING,
SRANKT TYPE STRING,
TRANKT TYPE STRING,
STEXT TYPE STRING,
TTEXT TYPE STRING,
MAXNUM TYPE STRING,
CHECK_IAPP TYPE STRING,
IAPPL TYPE STRING,
CHECK_LENG TYPE STRING,
LEN1T TYPE STRING,
LEN2T TYPE STRING,
CHECK_TLEN TYPE STRING,
TLEN1T TYPE STRING,
TLEN2T TYPE STRING,
CHECK_NUM TYPE STRING,
NUM1T TYPE STRING,
NUM2T TYPE STRING,
CHECK_MARK TYPE STRING,
CHECK_TRAN TYPE STRING,
CHECK_COMM TYPE STRING,
CHECK_DEV0 TYPE STRING,
CHECK_DEV1 TYPE STRING,
UNAME_DEV TYPE STRING,
CHECK_DEV2 TYPE STRING,
LOCK_DEVC TYPE STRING,
GEN_POSID TYPE STRING,
CHECK_OBJ0 TYPE STRING,
CHECK_OBJ1 TYPE STRING,
CHECK_OBJG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TRMMAPP_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_TRMMAPP_STR-UNAME sy-vline 
WA_TRMMAPP_STR-SLANGUAGE sy-vline 
WA_TRMMAPP_STR-TLANGUAGE sy-vline 
WA_TRMMAPP_STR-CDATE sy-vline 
WA_TRMMAPP_STR-CTIME sy-vline 
WA_TRMMAPP_STR-CHECK_USER sy-vline 
WA_TRMMAPP_STR-PPUSER sy-vline 
WA_TRMMAPP_STR-CHECK_DATE sy-vline 
WA_TRMMAPP_STR-IDATE1 sy-vline 
WA_TRMMAPP_STR-IDATE2 sy-vline 
WA_TRMMAPP_STR-SMODE sy-vline 
WA_TRMMAPP_STR-TMODE sy-vline 
WA_TRMMAPP_STR-SRANKT sy-vline 
WA_TRMMAPP_STR-TRANKT sy-vline 
WA_TRMMAPP_STR-STEXT sy-vline 
WA_TRMMAPP_STR-TTEXT sy-vline 
WA_TRMMAPP_STR-MAXNUM sy-vline 
WA_TRMMAPP_STR-CHECK_IAPP sy-vline 
WA_TRMMAPP_STR-IAPPL sy-vline 
WA_TRMMAPP_STR-CHECK_LENG sy-vline 
WA_TRMMAPP_STR-LEN1T sy-vline 
WA_TRMMAPP_STR-LEN2T sy-vline 
WA_TRMMAPP_STR-CHECK_TLEN sy-vline 
WA_TRMMAPP_STR-TLEN1T sy-vline 
WA_TRMMAPP_STR-TLEN2T sy-vline 
WA_TRMMAPP_STR-CHECK_NUM sy-vline 
WA_TRMMAPP_STR-NUM1T sy-vline 
WA_TRMMAPP_STR-NUM2T sy-vline 
WA_TRMMAPP_STR-CHECK_MARK sy-vline 
WA_TRMMAPP_STR-CHECK_TRAN sy-vline 
WA_TRMMAPP_STR-CHECK_COMM sy-vline 
WA_TRMMAPP_STR-CHECK_DEV0 sy-vline 
WA_TRMMAPP_STR-CHECK_DEV1 sy-vline 
WA_TRMMAPP_STR-UNAME_DEV sy-vline 
WA_TRMMAPP_STR-CHECK_DEV2 sy-vline 
WA_TRMMAPP_STR-LOCK_DEVC sy-vline 
WA_TRMMAPP_STR-GEN_POSID sy-vline 
WA_TRMMAPP_STR-CHECK_OBJ0 sy-vline 
WA_TRMMAPP_STR-CHECK_OBJ1 sy-vline 
WA_TRMMAPP_STR-CHECK_OBJG sy-vline      INTO ld_text SEPARATED BY SPACE.

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