ABAP Select data from SAP table ISU_INVREQCRTREQ_ITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_INVREQCRTREQ_ITM
*  INTO TABLE @DATA(IT_ISU_INVREQCRTREQ_ITM2).
*--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_ISU_INVREQCRTREQ_ITM INDEX 1 INTO DATA(WA_ISU_INVREQCRTREQ_ITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_INVREQCRTREQ_ITM>-CONTROLLER = 1.
<ISU_INVREQCRTREQ_ITM>-START_DATE = 1.
<ISU_INVREQCRTREQ_ITM>-END_DATE = 1.
<ISU_INVREQCRTREQ_ITM>-TYPE_CODE = 1.
<ISU_INVREQCRTREQ_ITM>-PROCESSING_TYPE_CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_INVREQCRTREQ_ITM-UTILITIES_BILLING_CUSTOMER_CON, sy-vline,
  WA_ISU_INVREQCRTREQ_ITM-ISU_NOSC_MANBILLTRANSTYPECODE, sy-vline,
  WA_ISU_INVREQCRTREQ_ITM-POSTING_RELEVANCE_INDICATOR, sy-vline,
  WA_ISU_INVREQCRTREQ_ITM-PRINTING_RELEVANCE_INDICATOR, sy-vline,
  WA_ISU_INVREQCRTREQ_ITM-GROUP_CODE, sy-vline,
  WA_ISU_INVREQCRTREQ_ITM-UTILITIES_WEIGHTING_CODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_INVREQCRTREQ_ITM 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_ISU_INVREQCRTREQ_ITM 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_ISU_INVREQCRTREQ_ITM INTO WA_ISU_INVREQCRTREQ_ITM.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ISU_INVREQCRTREQ_ITM_STR, 
CONTROLLER TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
TYPE_CODE TYPE STRING,
PROCESSING_TYPE_CODE TYPE STRING,
UTILITIES_BILLING_CUSTOMER_CON TYPE STRING,
ISU_NOSC_MANBILLTRANSTYPECODE TYPE STRING,
POSTING_RELEVANCE_INDICATOR TYPE STRING,
PRINTING_RELEVANCE_INDICATOR TYPE STRING,
GROUP_CODE TYPE STRING,
UTILITIES_WEIGHTING_CODE TYPE STRING,
UTILITIES_BILLED_RESULT_TYPE_C TYPE STRING,
TEXT_COLLECTION TYPE STRING,
CONTROLLER TYPE STRING,
TEXT TYPE STRING,
ACTION_CODE TYPE STRING,
ITEM_RATE TYPE STRING,
CONTROLLER TYPE STRING,
BILLING_RATE_GROUPING_CODE TYPE STRING,
UTILITIES_BILLING_TERMS_GROUP TYPE STRING,
ITEM_ACCOUNTING TYPE STRING,
CONTROLLER TYPE STRING,
ACCOUNTING_BUSINESS_AREA_CODE TYPE STRING,
PROFIT_CENTER_ID TYPE STRING,
COST_CENTER_ID TYPE STRING,
INTERNAL_ORDER_ID TYPE STRING,
PROJECT_WORK_BREAKDOWN_STRUCTU TYPE STRING,
LOCATION_INTERNAL_ID TYPE STRING,
ITEM_PRICE TYPE STRING,
CONTROLLER TYPE STRING,
PRICE_SPECIFICATION_NAME TYPE STRING,
PRICE_SPEC_CATEGORY_CODE TYPE STRING,
PRICE_SPEC_LEVEL_CODE TYPE STRING,
PRICE_SPEC_SCALE_ITEM_ID TYPE STRING,
UTILITIES_PRICE TYPE STRING,
CONTROLLER TYPE STRING,
AMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CONTENT TYPE STRING,
BASEQUANTITY TYPE STRING,
CONTROLLER TYPE STRING,
UNIT_CODE TYPE STRING,
CONTENT TYPE STRING,
ITEM_AMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
NET_AMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CONTENT TYPE STRING,
ITEM_QUANTITY TYPE STRING,
CONTROLLER TYPE STRING,
UTILITIES_BILLING_QUANTITY TYPE STRING,
CONTROLLER TYPE STRING,
UNIT_CODE TYPE STRING,
CONTENT TYPE STRING,
UTILITIES_QUANTITY_ADJUSTMENT TYPE STRING,
ITEM_STATISTICS TYPE STRING,
CONTROLLER TYPE STRING,
QUANTITY_STATISTICS_GROUP_CODE TYPE STRING,
QUANTITY_STATISTICS_INDICATOR TYPE STRING,
AMOUNT_STATISTICS_GROUP_CODE TYPE STRING,
AMOUNT_STATISTICS_INDICATOR TYPE STRING,
ITEM_UTILITIES_DEVICE TYPE STRING,
CONTROLLER TYPE STRING,
UTILITIES_DEVICE_ID TYPE STRING,
UTILITIES_DEVICE_REGISTER_ID TYPE STRING,
ACTUAL_METER_READING_RESULT_VA TYPE STRING,
PREVIOUS_METER_READING_RESULT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_INVREQCRTREQ_ITM_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_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-START_DATE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-END_DATE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-TYPE_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-PROCESSING_TYPE_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-UTILITIES_BILLING_CUSTOMER_CON sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-ISU_NOSC_MANBILLTRANSTYPECODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-POSTING_RELEVANCE_INDICATOR sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-PRINTING_RELEVANCE_INDICATOR sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-GROUP_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-UTILITIES_WEIGHTING_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-UTILITIES_BILLED_RESULT_TYPE_C sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-TEXT_COLLECTION sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-TEXT sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-ACTION_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-ITEM_RATE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-BILLING_RATE_GROUPING_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-UTILITIES_BILLING_TERMS_GROUP sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-ITEM_ACCOUNTING sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-ACCOUNTING_BUSINESS_AREA_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-PROFIT_CENTER_ID sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-COST_CENTER_ID sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-INTERNAL_ORDER_ID sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-PROJECT_WORK_BREAKDOWN_STRUCTU sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-LOCATION_INTERNAL_ID sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-ITEM_PRICE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-PRICE_SPECIFICATION_NAME sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-PRICE_SPEC_CATEGORY_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-PRICE_SPEC_LEVEL_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-PRICE_SPEC_SCALE_ITEM_ID sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-UTILITIES_PRICE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-AMOUNT sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CURRENCY_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTENT sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-BASEQUANTITY sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-UNIT_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTENT sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-ITEM_AMOUNT sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-NET_AMOUNT sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CURRENCY_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTENT sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-ITEM_QUANTITY sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-UTILITIES_BILLING_QUANTITY sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-UNIT_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTENT sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-UTILITIES_QUANTITY_ADJUSTMENT sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-ITEM_STATISTICS sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-QUANTITY_STATISTICS_GROUP_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-QUANTITY_STATISTICS_INDICATOR sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-AMOUNT_STATISTICS_GROUP_CODE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-AMOUNT_STATISTICS_INDICATOR sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-ITEM_UTILITIES_DEVICE sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-CONTROLLER sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-UTILITIES_DEVICE_ID sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-UTILITIES_DEVICE_REGISTER_ID sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-ACTUAL_METER_READING_RESULT_VA sy-vline 
WA_ISU_INVREQCRTREQ_ITM_STR-PREVIOUS_METER_READING_RESULT sy-vline      INTO ld_text SEPARATED BY SPACE.

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