ABAP Select data from SAP table MMPUR_CAT_ITM_RL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_CAT_ITM_RL 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 MMPUR_CAT_ITM_RL. 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 MMPUR_CAT_ITM_RL 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_MMPUR_CAT_ITM_RL TYPE STANDARD TABLE OF MMPUR_CAT_ITM_RL,
      WA_MMPUR_CAT_ITM_RL TYPE MMPUR_CAT_ITM_RL,
      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: <MMPUR_CAT_ITM_RL> TYPE MMPUR_CAT_ITM_RL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_CAT_ITM_RL
*  INTO TABLE @DATA(IT_MMPUR_CAT_ITM_RL2).
*--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_MMPUR_CAT_ITM_RL INDEX 1 INTO DATA(WA_MMPUR_CAT_ITM_RL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_CAT_ITM_RL>-CTLG_ITM_KEY = 1.
<MMPUR_CAT_ITM_RL>-CAT_ITM_HASH = 1.
<MMPUR_CAT_ITM_RL>-PRICE_KEY = 1.
<MMPUR_CAT_ITM_RL>-EXT_PRODUCT_ID = 1.
<MMPUR_CAT_ITM_RL>-WS_SERVICE_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_CAT_ITM_RL-WS_SERV_NAME, sy-vline,
  WA_MMPUR_CAT_ITM_RL-CATALOG_NAME, sy-vline,
  WA_MMPUR_CAT_ITM_RL-INTCATALOGNAME, sy-vline,
  WA_MMPUR_CAT_ITM_RL-VENDOR_NAME, sy-vline,
  WA_MMPUR_CAT_ITM_RL-VENDOR, sy-vline,
  WA_MMPUR_CAT_ITM_RL-VENDOR_MAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_CAT_ITM_RL 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_MMPUR_CAT_ITM_RL 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_MMPUR_CAT_ITM_RL INTO WA_MMPUR_CAT_ITM_RL.


*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 TSTPS, internal->external for field PRICE_VALID_FROM
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_CAT_ITM_RL-PRICE_VALID_FROM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_CAT_ITM_RL-PRICE_VALID_FROM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field PRICE_VALID_TO
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_CAT_ITM_RL-PRICE_VALID_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_CAT_ITM_RL-PRICE_VALID_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field CHANGED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_CAT_ITM_RL-CHANGED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_CAT_ITM_RL-CHANGED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_CAT_ITM_RL-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_CAT_ITM_RL-LOGSYS.
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_MMPUR_CAT_ITM_RL_STR, 
CTLG_ITM_KEY TYPE STRING,
CAT_ITM_HASH TYPE STRING,
PRICE_KEY TYPE STRING,
EXT_PRODUCT_ID TYPE STRING,
WS_SERVICE_ID TYPE STRING,
WS_SERV_NAME TYPE STRING,
CATALOG_NAME TYPE STRING,
INTCATALOGNAME TYPE STRING,
VENDOR_NAME TYPE STRING,
VENDOR TYPE STRING,
VENDOR_MAT TYPE STRING,
ITEM_TYPE TYPE STRING,
SERVICE TYPE STRING,
PRICE_VALID_FROM TYPE STRING,
PRICE_VALID_TO TYPE STRING,
PRICE_QUANTITY TYPE STRING,
TAX TYPE STRING,
MATNR TYPE STRING,
MATGROUP TYPE STRING,
MANUFACTNAME TYPE STRING,
MANUFACTCODE TYPE STRING,
MANUFACTMAT TYPE STRING,
LEADTIME TYPE STRING,
UNIT TYPE STRING,
CONTENT_UNIT TYPE STRING,
PACKAGING_QTY TYPE STRING,
MINORDER_QTY TYPE STRING,
LOTSIZE TYPE STRING,
CONTRACT TYPE STRING,
CONTRACT_ITEM TYPE STRING,
EXT_QUOTE_ID TYPE STRING,
EXT_QUOTE_ITEM TYPE STRING,
EXT_SCHEMA_TYPE TYPE STRING,
EXT_CATEGORY_ID TYPE STRING,
EXT_CATEGORY TYPE STRING,
AVERAGE_RATING TYPE STRING,
ASSORTMENT_IND TYPE STRING,
PARENT_ID TYPE STRING,
ISDIRTY TYPE STRING,
DELETION_IND TYPE STRING,
CATALOG_MANAGED TYPE STRING,
IS_FRM_PROD_MSTR TYPE STRING,
IS_CTLG_ITM TYPE STRING,
CHANGED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
SUSTAINABLE_CMPL TYPE STRING,
DIR_EM_VALUE TYPE STRING,
DIR_EM_UNIT TYPE STRING,
INDIR_EM_VALUE TYPE STRING,
INDIR_EM_UNIT TYPE STRING,
TP_EM_VALUE TYPE STRING,
TP_EM_UNIT TYPE STRING,
RECYCLE_VALUE TYPE STRING,
RECYCLE_UNIT TYPE STRING,
WATER_CONS_VALUE TYPE STRING,
WATER_CONS_UNIT TYPE STRING,
ENGY_CONS_VALUE TYPE STRING,
ENGY_CONS_UNIT TYPE STRING,
WASTEGEN_VALUE TYPE STRING,
WASTEGEN_UNIT TYPE STRING,
LOGSYS TYPE STRING,
SLD_SYS_NAME TYPE STRING,
PRODUCT_SRC_SYS TYPE STRING,
PRODUCT_TYPE TYPE STRING,
CATEGORY TYPE STRING,
UNIT_DECIMAL TYPE STRING,
PRD_REL_EXISTS TYPE STRING,
UPDATE_TIMESTAMP TYPE STRING,
IS_PRCSCL_EXIST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_CAT_ITM_RL_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_MMPUR_CAT_ITM_RL_STR-CTLG_ITM_KEY sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-CAT_ITM_HASH sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-PRICE_KEY sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-EXT_PRODUCT_ID sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-WS_SERVICE_ID sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-WS_SERV_NAME sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-CATALOG_NAME sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-INTCATALOGNAME sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-VENDOR_NAME sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-VENDOR sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-VENDOR_MAT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-ITEM_TYPE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-SERVICE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-PRICE_VALID_FROM sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-PRICE_VALID_TO sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-PRICE_QUANTITY sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-TAX sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-MATNR sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-MATGROUP sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-MANUFACTNAME sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-MANUFACTCODE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-MANUFACTMAT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-LEADTIME sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-UNIT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-CONTENT_UNIT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-PACKAGING_QTY sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-MINORDER_QTY sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-LOTSIZE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-CONTRACT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-CONTRACT_ITEM sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-EXT_QUOTE_ID sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-EXT_QUOTE_ITEM sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-EXT_SCHEMA_TYPE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-EXT_CATEGORY_ID sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-EXT_CATEGORY sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-AVERAGE_RATING sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-ASSORTMENT_IND sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-PARENT_ID sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-ISDIRTY sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-DELETION_IND sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-CATALOG_MANAGED sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-IS_FRM_PROD_MSTR sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-IS_CTLG_ITM sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-CHANGED_AT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-CHANGED_BY sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-SUSTAINABLE_CMPL sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-DIR_EM_VALUE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-DIR_EM_UNIT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-INDIR_EM_VALUE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-INDIR_EM_UNIT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-TP_EM_VALUE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-TP_EM_UNIT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-RECYCLE_VALUE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-RECYCLE_UNIT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-WATER_CONS_VALUE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-WATER_CONS_UNIT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-ENGY_CONS_VALUE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-ENGY_CONS_UNIT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-WASTEGEN_VALUE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-WASTEGEN_UNIT sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-LOGSYS sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-SLD_SYS_NAME sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-PRODUCT_SRC_SYS sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-PRODUCT_TYPE sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-CATEGORY sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-UNIT_DECIMAL sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-PRD_REL_EXISTS sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-UPDATE_TIMESTAMP sy-vline 
WA_MMPUR_CAT_ITM_RL_STR-IS_PRCSCL_EXIST sy-vline      INTO ld_text SEPARATED BY SPACE.

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