ABAP Select data from SAP table /MERP/PM_LAM_OBJECT_DATA_STR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MERP/PM_LAM_OBJECT_DATA_STR 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 /MERP/PM_LAM_OBJECT_DATA_STR. 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 /MERP/PM_LAM_OBJECT_DATA_STR 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_/MERP/PM_LAM_OBJECT_DATA_STR TYPE STANDARD TABLE OF /MERP/PM_LAM_OBJECT_DATA_STR,
      WA_/MERP/PM_LAM_OBJECT_DATA_STR TYPE /MERP/PM_LAM_OBJECT_DATA_STR,
      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: </MERP/PM_LAM_OBJECT_DATA_STR> TYPE /MERP/PM_LAM_OBJECT_DATA_STR.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MERP/PM_LAM_OBJECT_DATA_STR
  INTO TABLE IT_/MERP/PM_LAM_OBJECT_DATA_STR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MERP/PM_LAM_OBJECT_DATA_STR
*  INTO TABLE @DATA(IT_/MERP/PM_LAM_OBJECT_DATA_STR2).
*--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_/MERP/PM_LAM_OBJECT_DATA_STR INDEX 1 INTO DATA(WA_/MERP/PM_LAM_OBJECT_DATA_STR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MERP/PM_LAM_OBJECT_DATA_STR ASSIGNING </MERP/PM_LAM_OBJECT_DATA_STR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MERP/PM_LAM_OBJECT_DATA_STR>-MANDT = 1.
</MERP/PM_LAM_OBJECT_DATA_STR>-OBART = 1.
</MERP/PM_LAM_OBJECT_DATA_STR>-TABKEY = 1.
</MERP/PM_LAM_OBJECT_DATA_STR>-START_POINT = 1.
</MERP/PM_LAM_OBJECT_DATA_STR>-END_POINT = 1.

ENDLOOP.

LOOP AT IT_/MERP/PM_LAM_OBJECT_DATA_STR INTO WA_/MERP/PM_LAM_OBJECT_DATA_STR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MERP/PM_LAM_OBJECT_DATA_STR-LINEAR_LENGTH, sy-vline,
  WA_/MERP/PM_LAM_OBJECT_DATA_STR-LINEAR_UNIT, sy-vline,
  WA_/MERP/PM_LAM_OBJECT_DATA_STR-MARKER_START, sy-vline,
  WA_/MERP/PM_LAM_OBJECT_DATA_STR-MARKER_DIST_STA, sy-vline,
  WA_/MERP/PM_LAM_OBJECT_DATA_STR-MARKER_END, sy-vline,
  WA_/MERP/PM_LAM_OBJECT_DATA_STR-MARKER_DIST_END, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MERP/PM_LAM_OBJECT_DATA_STR 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_/MERP/PM_LAM_OBJECT_DATA_STR 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_/MERP/PM_LAM_OBJECT_DATA_STR INTO WA_/MERP/PM_LAM_OBJECT_DATA_STR.


*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 CUNIT, internal->external for field LINEAR_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PM_LAM_OBJECT_DATA_STR-LINEAR_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PM_LAM_OBJECT_DATA_STR-LINEAR_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MARKER_DIST_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PM_LAM_OBJECT_DATA_STR-MARKER_DIST_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PM_LAM_OBJECT_DATA_STR-MARKER_DIST_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field OFFSET1_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PM_LAM_OBJECT_DATA_STR-OFFSET1_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PM_LAM_OBJECT_DATA_STR-OFFSET1_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field OFFSET2_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PM_LAM_OBJECT_DATA_STR-OFFSET2_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PM_LAM_OBJECT_DATA_STR-OFFSET2_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PM_LAM_OBJECT_DATA_STR-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PM_LAM_OBJECT_DATA_STR-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PM_LAM_OBJECT_DATA_STR-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PM_LAM_OBJECT_DATA_STR-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QMNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PM_LAM_OBJECT_DATA_STR-QMNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PM_LAM_OBJECT_DATA_STR-QMNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PM_LAM_OBJECT_DATA_STR-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PM_LAM_OBJECT_DATA_STR-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PM_LAM_OBJECT_DATA_STR-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PM_LAM_OBJECT_DATA_STR-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field POINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PM_LAM_OBJECT_DATA_STR-POINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PM_LAM_OBJECT_DATA_STR-POINT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MDOCM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PM_LAM_OBJECT_DATA_STR-MDOCM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PM_LAM_OBJECT_DATA_STR-MDOCM.
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_/MERP/PM_LAM_OBJECT_DATA_STR_STR, 
MANDT TYPE STRING,
OBART TYPE STRING,
TABKEY TYPE STRING,
START_POINT TYPE STRING,
END_POINT TYPE STRING,
LINEAR_LENGTH TYPE STRING,
LINEAR_UNIT TYPE STRING,
MARKER_START TYPE STRING,
MARKER_DIST_STA TYPE STRING,
MARKER_END TYPE STRING,
MARKER_DIST_END TYPE STRING,
MARKER_DIST_UNIT TYPE STRING,
LRPID TYPE STRING,
OFFSET1_TYPE TYPE STRING,
OFFSET1_VALUE TYPE STRING,
OFFSET1_UNIT TYPE STRING,
OFFSET2_TYPE TYPE STRING,
OFFSET2_VALUE TYPE STRING,
OFFSET2_UNIT TYPE STRING,
AUFNR TYPE STRING,
VORNR TYPE STRING,
QMNUM TYPE STRING,
FENUM TYPE STRING,
EQUNR TYPE STRING,
TPLNR TYPE STRING,
RUECK TYPE STRING,
RMZHL TYPE STRING,
POINT TYPE STRING,
MDOCM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MERP/PM_LAM_OBJECT_DATA_STR_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_/MERP/PM_LAM_OBJECT_DATA_STR_STR-MANDT sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-OBART sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-TABKEY sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-START_POINT sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-END_POINT sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-LINEAR_LENGTH sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-LINEAR_UNIT sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-MARKER_START sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-MARKER_DIST_STA sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-MARKER_END sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-MARKER_DIST_END sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-MARKER_DIST_UNIT sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-LRPID sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-OFFSET1_TYPE sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-OFFSET1_VALUE sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-OFFSET1_UNIT sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-OFFSET2_TYPE sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-OFFSET2_VALUE sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-OFFSET2_UNIT sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-AUFNR sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-VORNR sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-QMNUM sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-FENUM sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-EQUNR sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-TPLNR sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-RUECK sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-RMZHL sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-POINT sy-vline 
WA_/MERP/PM_LAM_OBJECT_DATA_STR_STR-MDOCM sy-vline      INTO ld_text SEPARATED BY SPACE.

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