ABAP Select data from SAP table LDOP into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP LDOP 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 LDOP. 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 LDOP 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_LDOP TYPE STANDARD TABLE OF LDOP,
      WA_LDOP TYPE LDOP,
      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: <LDOP> TYPE LDOP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LDOP
*  INTO TABLE @DATA(IT_LDOP2).
*--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_LDOP INDEX 1 INTO DATA(WA_LDOP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LDOP>-ARBID = 1.
<LDOP>-VORNR = 1.
<LDOP>-EX_TIME = 1.
<LDOP>-VGDZT = 1.
<LDOP>-VGBED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LDOP-VGW01, sy-vline,
  WA_LDOP-VGE01, sy-vline,
  WA_LDOP-VGW02, sy-vline,
  WA_LDOP-VGE02, sy-vline,
  WA_LDOP-VGW03, sy-vline,
  WA_LDOP-VGE03, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LDOP 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_LDOP 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_LDOP INTO WA_LDOP.


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

*Conversion exit CUNIT, internal->external for field VGE01
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LDOP-VGE01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDOP-VGE01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE02
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LDOP-VGE02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDOP-VGE02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE03
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LDOP-VGE03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDOP-VGE03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LDOP-VGE04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDOP-VGE04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE05
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LDOP-VGE05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDOP-VGE05.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE06
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LDOP-VGE06
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDOP-VGE06.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field USE04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LDOP-USE04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDOP-USE04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field USE05
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LDOP-USE05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDOP-USE05.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field ZEIWN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LDOP-ZEIWN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LDOP-ZEIWN.
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_LDOP_STR, 
ARBID TYPE STRING,
VORNR TYPE STRING,
EX_TIME TYPE STRING,
VGDZT TYPE STRING,
VGBED TYPE STRING,
VGW01 TYPE STRING,
VGE01 TYPE STRING,
VGW02 TYPE STRING,
VGE02 TYPE STRING,
VGW03 TYPE STRING,
VGE03 TYPE STRING,
VGW04 TYPE STRING,
VGE04 TYPE STRING,
VGW05 TYPE STRING,
VGE05 TYPE STRING,
VGW06 TYPE STRING,
VGE06 TYPE STRING,
ANZMA TYPE STRING,
ANZZL TYPE STRING,
ARBEI TYPE STRING,
ARBEH TYPE STRING,
BMSCH TYPE STRING,
DAUNO TYPE STRING,
DAUNE TYPE STRING,
MGVRG TYPE STRING,
MEINH TYPE STRING,
SLWID TYPE STRING,
SPLIM TYPE STRING,
SPMUS TYPE STRING,
USR04 TYPE STRING,
USE04 TYPE STRING,
USR05 TYPE STRING,
USE05 TYPE STRING,
ZMERH TYPE STRING,
ZEIER TYPE STRING,
ZLPRO TYPE STRING,
ZEILP TYPE STRING,
ZLMAX TYPE STRING,
ZEILM TYPE STRING,
ZWNOR TYPE STRING,
ZEIWN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LDOP_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_LDOP_STR-ARBID sy-vline 
WA_LDOP_STR-VORNR sy-vline 
WA_LDOP_STR-EX_TIME sy-vline 
WA_LDOP_STR-VGDZT sy-vline 
WA_LDOP_STR-VGBED sy-vline 
WA_LDOP_STR-VGW01 sy-vline 
WA_LDOP_STR-VGE01 sy-vline 
WA_LDOP_STR-VGW02 sy-vline 
WA_LDOP_STR-VGE02 sy-vline 
WA_LDOP_STR-VGW03 sy-vline 
WA_LDOP_STR-VGE03 sy-vline 
WA_LDOP_STR-VGW04 sy-vline 
WA_LDOP_STR-VGE04 sy-vline 
WA_LDOP_STR-VGW05 sy-vline 
WA_LDOP_STR-VGE05 sy-vline 
WA_LDOP_STR-VGW06 sy-vline 
WA_LDOP_STR-VGE06 sy-vline 
WA_LDOP_STR-ANZMA sy-vline 
WA_LDOP_STR-ANZZL sy-vline 
WA_LDOP_STR-ARBEI sy-vline 
WA_LDOP_STR-ARBEH sy-vline 
WA_LDOP_STR-BMSCH sy-vline 
WA_LDOP_STR-DAUNO sy-vline 
WA_LDOP_STR-DAUNE sy-vline 
WA_LDOP_STR-MGVRG sy-vline 
WA_LDOP_STR-MEINH sy-vline 
WA_LDOP_STR-SLWID sy-vline 
WA_LDOP_STR-SPLIM sy-vline 
WA_LDOP_STR-SPMUS sy-vline 
WA_LDOP_STR-USR04 sy-vline 
WA_LDOP_STR-USE04 sy-vline 
WA_LDOP_STR-USR05 sy-vline 
WA_LDOP_STR-USE05 sy-vline 
WA_LDOP_STR-ZMERH sy-vline 
WA_LDOP_STR-ZEIER sy-vline 
WA_LDOP_STR-ZLPRO sy-vline 
WA_LDOP_STR-ZEILP sy-vline 
WA_LDOP_STR-ZLMAX sy-vline 
WA_LDOP_STR-ZEILM sy-vline 
WA_LDOP_STR-ZWNOR sy-vline 
WA_LDOP_STR-ZEIWN sy-vline      INTO ld_text SEPARATED BY SPACE.

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