ABAP Select data from SAP table LCUPLOAD 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 LCUPLOAD 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 LCUPLOAD. 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 LCUPLOAD 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_LCUPLOAD TYPE STANDARD TABLE OF LCUPLOAD,
      WA_LCUPLOAD TYPE LCUPLOAD,
      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: <LCUPLOAD> TYPE LCUPLOAD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LCUPLOAD
*  INTO TABLE @DATA(IT_LCUPLOAD2).
*--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_LCUPLOAD INDEX 1 INTO DATA(WA_LCUPLOAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LCUPLOAD>-RLDNR = 1.
<LCUPLOAD>-RCOMP = 1.
<LCUPLOAD>-RVERS = 1.
<LCUPLOAD>-RYEAR = 1.
<LCUPLOAD>-POPER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LCUPLOAD-RACCT, sy-vline,
  WA_LCUPLOAD-SIGN, sy-vline,
  WA_LCUPLOAD-KSL, sy-vline,
  WA_LCUPLOAD-HSL, sy-vline,
  WA_LCUPLOAD-TSL, sy-vline,
  WA_LCUPLOAD-MSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LCUPLOAD 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_LCUPLOAD 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_LCUPLOAD INTO WA_LCUPLOAD.


*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 ALPHA, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_LCUPLOAD-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LCUPLOAD-RLDNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_LCUPLOAD-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LCUPLOAD-RYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit GJAHR, internal->external for field RYACQ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_LCUPLOAD-RYACQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LCUPLOAD-RYACQ.
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_LCUPLOAD_STR, 
RLDNR TYPE STRING,
RCOMP TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
POPER TYPE STRING,
RACCT TYPE STRING,
SIGN TYPE STRING,
KSL TYPE STRING,
HSL TYPE STRING,
TSL TYPE STRING,
MSL TYPE STRING,
RGCUR TYPE STRING,
RHCUR TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
RASSC TYPE STRING,
RMVCT TYPE STRING,
RYACQ TYPE STRING,
RPACQ TYPE STRING,
ADFLD1 TYPE STRING,
ADFLD2 TYPE STRING,
ADFLD3 TYPE STRING,
BUSA TYPE STRING,
PBUSA TYPE STRING,
DUMMY10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LCUPLOAD_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_LCUPLOAD_STR-RLDNR sy-vline 
WA_LCUPLOAD_STR-RCOMP sy-vline 
WA_LCUPLOAD_STR-RVERS sy-vline 
WA_LCUPLOAD_STR-RYEAR sy-vline 
WA_LCUPLOAD_STR-POPER sy-vline 
WA_LCUPLOAD_STR-RACCT sy-vline 
WA_LCUPLOAD_STR-SIGN sy-vline 
WA_LCUPLOAD_STR-KSL sy-vline 
WA_LCUPLOAD_STR-HSL sy-vline 
WA_LCUPLOAD_STR-TSL sy-vline 
WA_LCUPLOAD_STR-MSL sy-vline 
WA_LCUPLOAD_STR-RGCUR sy-vline 
WA_LCUPLOAD_STR-RHCUR sy-vline 
WA_LCUPLOAD_STR-RTCUR sy-vline 
WA_LCUPLOAD_STR-RUNIT sy-vline 
WA_LCUPLOAD_STR-RASSC sy-vline 
WA_LCUPLOAD_STR-RMVCT sy-vline 
WA_LCUPLOAD_STR-RYACQ sy-vline 
WA_LCUPLOAD_STR-RPACQ sy-vline 
WA_LCUPLOAD_STR-ADFLD1 sy-vline 
WA_LCUPLOAD_STR-ADFLD2 sy-vline 
WA_LCUPLOAD_STR-ADFLD3 sy-vline 
WA_LCUPLOAD_STR-BUSA sy-vline 
WA_LCUPLOAD_STR-PBUSA sy-vline 
WA_LCUPLOAD_STR-DUMMY10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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