ABAP Select data from SAP table /SAPSRM/S_PDO_MDF_DO_LIMIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPSRM/S_PDO_MDF_DO_LIMIT
*  INTO TABLE @DATA(IT_/SAPSRM/S_PDO_MDF_DO_LIMIT2).
*--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_/SAPSRM/S_PDO_MDF_DO_LIMIT INDEX 1 INTO DATA(WA_/SAPSRM/S_PDO_MDF_DO_LIMIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPSRM/S_PDO_MDF_DO_LIMIT>-CLIENT = 1.
</SAPSRM/S_PDO_MDF_DO_LIMIT>-GUID = 1.
</SAPSRM/S_PDO_MDF_DO_LIMIT>-P_GUID = 1.
</SAPSRM/S_PDO_MDF_DO_LIMIT>-LIMIT = 1.
</SAPSRM/S_PDO_MDF_DO_LIMIT>-UNLIMITED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPSRM/S_PDO_MDF_DO_LIMIT-EXP_VALUE, sy-vline,
  WA_/SAPSRM/S_PDO_MDF_DO_LIMIT-CURRENCY, sy-vline,
  WA_/SAPSRM/S_PDO_MDF_DO_LIMIT-CATEGORY, sy-vline,
  WA_/SAPSRM/S_PDO_MDF_DO_LIMIT-CATEGORY_ID, sy-vline,
  WA_/SAPSRM/S_PDO_MDF_DO_LIMIT-FINAL_INV, sy-vline,
  WA_/SAPSRM/S_PDO_MDF_DO_LIMIT-FINAL_ENTRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPSRM/S_PDO_MDF_DO_LIMIT 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_/SAPSRM/S_PDO_MDF_DO_LIMIT 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_/SAPSRM/S_PDO_MDF_DO_LIMIT INTO WA_/SAPSRM/S_PDO_MDF_DO_LIMIT.


*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 PARTNER_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSRM/S_PDO_MDF_DO_LIMIT-PARTNER_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSRM/S_PDO_MDF_DO_LIMIT-PARTNER_ID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field WORKER_SRC_SYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPSRM/S_PDO_MDF_DO_LIMIT-WORKER_SRC_SYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPSRM/S_PDO_MDF_DO_LIMIT-WORKER_SRC_SYS.
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_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR, 
CLIENT TYPE STRING,
GUID TYPE STRING,
P_GUID TYPE STRING,
LIMIT TYPE STRING,
UNLIMITED TYPE STRING,
EXP_VALUE TYPE STRING,
CURRENCY TYPE STRING,
CATEGORY TYPE STRING,
CATEGORY_ID TYPE STRING,
FINAL_INV TYPE STRING,
FINAL_ENTRY TYPE STRING,
DEL_IND TYPE STRING,
LIM_TYPE TYPE STRING,
LIM_REF_H_ID TYPE STRING,
LIM_REF_I_ID TYPE STRING,
LIM_REF_H_GUID TYPE STRING,
LIM_REF_I_GUID TYPE STRING,
LIM_REF_LOG_SYS TYPE STRING,
ACCEPT_LIMIT TYPE STRING,
DESCRIPTION TYPE STRING,
VPER_START TYPE STRING,
VPER_END TYPE STRING,
VPER_REQ_TYPE TYPE STRING,
PARTNER_ID TYPE STRING,
NAME TYPE STRING,
PARTNER_NO TYPE STRING,
PARTNER_GUID TYPE STRING,
WORKER_ID TYPE STRING,
WORKER_NAME TYPE STRING,
WORKER_FIRSTNAME TYPE STRING,
WORKER_LASTNAME TYPE STRING,
WORKER_GUID TYPE STRING,
WORKER_SRC_SYS TYPE STRING,
CURRENCY_TEXT TYPE STRING,
CATEGORY_TEXT TYPE STRING,
ACC_CAT TYPE STRING,
ACC_CAT_TEXT TYPE STRING,
GENERIC_ACC TYPE STRING,
ACC_KNOWN TYPE STRING,
ACC_UNKNOWN TYPE STRING,
CONF_INV TYPE STRING,
ONLY_INV TYPE STRING,
TYPE_OF_SYSTEM TYPE STRING,
TAX_CODE TYPE STRING,
TAX_AMOUNT TYPE STRING,
TAX_TEXT TYPE STRING,
TAX_CURR TYPE STRING,
TAX_CURR_TEXT TYPE STRING,
SUBTYPE TYPE STRING,
REM_VAL TYPE STRING,
REM_UNLIMITED TYPE STRING,
ITM_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_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_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-CLIENT sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-GUID sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-P_GUID sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-LIMIT sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-UNLIMITED sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-EXP_VALUE sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-CURRENCY sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-CATEGORY sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-CATEGORY_ID sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-FINAL_INV sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-FINAL_ENTRY sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-DEL_IND sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-LIM_TYPE sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-LIM_REF_H_ID sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-LIM_REF_I_ID sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-LIM_REF_H_GUID sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-LIM_REF_I_GUID sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-LIM_REF_LOG_SYS sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-ACCEPT_LIMIT sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-DESCRIPTION sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-VPER_START sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-VPER_END sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-VPER_REQ_TYPE sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-PARTNER_ID sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-NAME sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-PARTNER_NO sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-PARTNER_GUID sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-WORKER_ID sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-WORKER_NAME sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-WORKER_FIRSTNAME sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-WORKER_LASTNAME sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-WORKER_GUID sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-WORKER_SRC_SYS sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-CURRENCY_TEXT sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-CATEGORY_TEXT sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-ACC_CAT sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-ACC_CAT_TEXT sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-GENERIC_ACC sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-ACC_KNOWN sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-ACC_UNKNOWN sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-CONF_INV sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-ONLY_INV sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-TYPE_OF_SYSTEM sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-TAX_CODE sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-TAX_AMOUNT sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-TAX_TEXT sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-TAX_CURR sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-TAX_CURR_TEXT sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-SUBTYPE sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-REM_VAL sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-REM_UNLIMITED sy-vline 
WA_/SAPSRM/S_PDO_MDF_DO_LIMIT_STR-ITM_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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