ABAP Select data from SAP table /SAPMP/SD_LEIHG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPMP/SD_LEIHG
*  INTO TABLE @DATA(IT_/SAPMP/SD_LEIHG2).
*--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_/SAPMP/SD_LEIHG INDEX 1 INTO DATA(WA_/SAPMP/SD_LEIHG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPMP/SD_LEIHG>-MANDT = 1.
</SAPMP/SD_LEIHG>-KUNNR = 1.
</SAPMP/SD_LEIHG>-MATNR = 1.
</SAPMP/SD_LEIHG>-WERKS = 1.
</SAPMP/SD_LEIHG>-CHARG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPMP/SD_LEIHG-/SAPMP/POSTNO_O, sy-vline,
  WA_/SAPMP/SD_LEIHG-/SAPMP/BJAHR_O, sy-vline,
  WA_/SAPMP/SD_LEIHG-/SAPMP/POSTIT_O, sy-vline,
  WA_/SAPMP/SD_LEIHG-/SAPMP/WADAT_O, sy-vline,
  WA_/SAPMP/SD_LEIHG-/SAPMP/VBELN_O, sy-vline,
  WA_/SAPMP/SD_LEIHG-/SAPMP/POSNR_O, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPMP/SD_LEIHG 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_/SAPMP/SD_LEIHG 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_/SAPMP/SD_LEIHG INTO WA_/SAPMP/SD_LEIHG.


*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 KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPMP/SD_LEIHG-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPMP/SD_LEIHG-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SAPMP/SD_LEIHG-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPMP/SD_LEIHG-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field RL_ACCTNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPMP/SD_LEIHG-RL_ACCTNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPMP/SD_LEIHG-RL_ACCTNO.
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_/SAPMP/SD_LEIHG_STR, 
MANDT TYPE STRING,
KUNNR TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
CHARG TYPE STRING,
/SAPMP/POSTNO_O TYPE STRING,
/SAPMP/BJAHR_O TYPE STRING,
/SAPMP/POSTIT_O TYPE STRING,
/SAPMP/WADAT_O TYPE STRING,
/SAPMP/VBELN_O TYPE STRING,
/SAPMP/POSNR_O TYPE STRING,
/SAPMP/POSTNO_I TYPE STRING,
/SAPMP/BJAHR_I TYPE STRING,
/SAPMP/POSTIT_I TYPE STRING,
/SAPMP/WADAT_I TYPE STRING,
/SAPMP/VBELN_I TYPE STRING,
/SAPMP/POSNR_I TYPE STRING,
RL_ACCTNO TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
KDGRP TYPE STRING,
VKGRP TYPE STRING,
VKBUR TYPE STRING,
/SAPMP/LEIHGE TYPE STRING,
/SAPMP/LEIHW TYPE STRING,
/SAPMP/ABRDAT TYPE STRING,
/SAPMP/ABRART TYPE STRING,
/SAPMP/AUSBUCH TYPE STRING,
/SAPMP/STAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPMP/SD_LEIHG_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_/SAPMP/SD_LEIHG_STR-MANDT sy-vline 
WA_/SAPMP/SD_LEIHG_STR-KUNNR sy-vline 
WA_/SAPMP/SD_LEIHG_STR-MATNR sy-vline 
WA_/SAPMP/SD_LEIHG_STR-WERKS sy-vline 
WA_/SAPMP/SD_LEIHG_STR-CHARG sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/POSTNO_O sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/BJAHR_O sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/POSTIT_O sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/WADAT_O sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/VBELN_O sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/POSNR_O sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/POSTNO_I sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/BJAHR_I sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/POSTIT_I sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/WADAT_I sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/VBELN_I sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/POSNR_I sy-vline 
WA_/SAPMP/SD_LEIHG_STR-RL_ACCTNO sy-vline 
WA_/SAPMP/SD_LEIHG_STR-VKORG sy-vline 
WA_/SAPMP/SD_LEIHG_STR-VTWEG sy-vline 
WA_/SAPMP/SD_LEIHG_STR-SPART sy-vline 
WA_/SAPMP/SD_LEIHG_STR-KDGRP sy-vline 
WA_/SAPMP/SD_LEIHG_STR-VKGRP sy-vline 
WA_/SAPMP/SD_LEIHG_STR-VKBUR sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/LEIHGE sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/LEIHW sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/ABRDAT sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/ABRART sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/AUSBUCH sy-vline 
WA_/SAPMP/SD_LEIHG_STR-/SAPMP/STAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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