ABAP Select data from SAP table IMPEASSRLTDINST into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMPEASSRLTDINST
*  INTO TABLE @DATA(IT_IMPEASSRLTDINST2).
*--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_IMPEASSRLTDINST INDEX 1 INTO DATA(WA_IMPEASSRLTDINST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMPEASSRLTDINST>-MANDT = 1.
<IMPEASSRLTDINST>-RESERVATION = 1.
<IMPEASSRLTDINST>-RESERVATIONITEM = 1.
<IMPEASSRLTDINST>-RECORDTYPE = 1.
<IMPEASSRLTDINST>-OPACTYNTWKINSTANCE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMPEASSRLTDINST-OPACTYNTWKELEMENT, sy-vline,
  WA_IMPEASSRLTDINST-ASSEMBLYSHOPFLOORITEM, sy-vline,
  WA_IMPEASSRLTDINST-SHOPFLOORITEM, sy-vline,
  WA_IMPEASSRLTDINST-ORIGLDGTLMOCKUPCHARCSUUID, sy-vline,
  WA_IMPEASSRLTDINST-RELTDORIGLDGTLMOCKUPCHARCSUUID, sy-vline,
  WA_IMPEASSRLTDINST-MATERIALCOMPONENTQUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMPEASSRLTDINST 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_IMPEASSRLTDINST 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_IMPEASSRLTDINST INTO WA_IMPEASSRLTDINST.


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

*Conversion exit GERNR, internal->external for field ASSEMBLEDSERIALNUMBER
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_IMPEASSRLTDINST-ASSEMBLEDSERIALNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMPEASSRLTDINST-ASSEMBLEDSERIALNUMBER.
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_IMPEASSRLTDINST_STR, 
MANDT TYPE STRING,
RESERVATION TYPE STRING,
RESERVATIONITEM TYPE STRING,
RECORDTYPE TYPE STRING,
OPACTYNTWKINSTANCE TYPE STRING,
OPACTYNTWKELEMENT TYPE STRING,
ASSEMBLYSHOPFLOORITEM TYPE STRING,
SHOPFLOORITEM TYPE STRING,
ORIGLDGTLMOCKUPCHARCSUUID TYPE STRING,
RELTDORIGLDGTLMOCKUPCHARCSUUID TYPE STRING,
MATERIALCOMPONENTQUANTITY TYPE STRING,
MATERIALBASEUNIT TYPE STRING,
REFERENCEDESIGNATORVALUE TYPE STRING,
BATCH TYPE STRING,
BATCHBYSUPPLIER TYPE STRING,
ASSEMBLEDSERIALNUMBER TYPE STRING,
MANUFACTURERSERIALNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMPEASSRLTDINST_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_IMPEASSRLTDINST_STR-MANDT sy-vline 
WA_IMPEASSRLTDINST_STR-RESERVATION sy-vline 
WA_IMPEASSRLTDINST_STR-RESERVATIONITEM sy-vline 
WA_IMPEASSRLTDINST_STR-RECORDTYPE sy-vline 
WA_IMPEASSRLTDINST_STR-OPACTYNTWKINSTANCE sy-vline 
WA_IMPEASSRLTDINST_STR-OPACTYNTWKELEMENT sy-vline 
WA_IMPEASSRLTDINST_STR-ASSEMBLYSHOPFLOORITEM sy-vline 
WA_IMPEASSRLTDINST_STR-SHOPFLOORITEM sy-vline 
WA_IMPEASSRLTDINST_STR-ORIGLDGTLMOCKUPCHARCSUUID sy-vline 
WA_IMPEASSRLTDINST_STR-RELTDORIGLDGTLMOCKUPCHARCSUUID sy-vline 
WA_IMPEASSRLTDINST_STR-MATERIALCOMPONENTQUANTITY sy-vline 
WA_IMPEASSRLTDINST_STR-MATERIALBASEUNIT sy-vline 
WA_IMPEASSRLTDINST_STR-REFERENCEDESIGNATORVALUE sy-vline 
WA_IMPEASSRLTDINST_STR-BATCH sy-vline 
WA_IMPEASSRLTDINST_STR-BATCHBYSUPPLIER sy-vline 
WA_IMPEASSRLTDINST_STR-ASSEMBLEDSERIALNUMBER sy-vline 
WA_IMPEASSRLTDINST_STR-MANUFACTURERSERIALNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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