ABAP Select data from SAP table IPMRPRQMT into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IPMRPRQMT 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 IPMRPRQMT. 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 IPMRPRQMT 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_IPMRPRQMT TYPE STANDARD TABLE OF IPMRPRQMT,
      WA_IPMRPRQMT TYPE IPMRPRQMT,
      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: <IPMRPRQMT> TYPE IPMRPRQMT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPMRPRQMT
*  INTO TABLE @DATA(IT_IPMRPRQMT2).
*--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_IPMRPRQMT INDEX 1 INTO DATA(WA_IPMRPRQMT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPMRPRQMT>-MANDT = 1.
<IPMRPRQMT>-PMRPSIMULATION = 1.
<IPMRPRQMT>-PMRPNODEID = 1.
<IPMRPRQMT>-PMRPPARENTNODEID = 1.
<IPMRPRQMT>-RECEIPTINTERNALID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPMRPRQMT-PARENTRECEIPTINTERNALID, sy-vline,
  WA_IPMRPRQMT-REQUIREMENTINTERNALID, sy-vline,
  WA_IPMRPRQMT-PRODUCT, sy-vline,
  WA_IPMRPRQMT-PLANT, sy-vline,
  WA_IPMRPRQMT-MRPAREA, sy-vline,
  WA_IPMRPRQMT-PMRPRECEIPTCATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPMRPRQMT 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_IPMRPRQMT 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_IPMRPRQMT INTO WA_IPMRPRQMT.


*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 MATN1, internal->external for field PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IPMRPRQMT-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPMRPRQMT-PRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IPMRPRQMT-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPMRPRQMT-UNITOFMEASURE.
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_IPMRPRQMT_STR, 
MANDT TYPE STRING,
PMRPSIMULATION TYPE STRING,
PMRPNODEID TYPE STRING,
PMRPPARENTNODEID TYPE STRING,
RECEIPTINTERNALID TYPE STRING,
PARENTRECEIPTINTERNALID TYPE STRING,
REQUIREMENTINTERNALID TYPE STRING,
PRODUCT TYPE STRING,
PLANT TYPE STRING,
MRPAREA TYPE STRING,
PMRPRECEIPTCATEGORY TYPE STRING,
RECEIPTSTARTDATE TYPE STRING,
RECEIPTENDDATE TYPE STRING,
PMRPSOURCEOFSUPPLYINTERNALID TYPE STRING,
REQUIREMENTSTARTDATE TYPE STRING,
REQUIREMENTENDDATE TYPE STRING,
PMRPRECEIPTSUPPLYENDDATE TYPE STRING,
REQUIREDQUANTITY TYPE STRING,
PMRPRECEIPTQUANTITY TYPE STRING,
PULLINQUANTITY TYPE STRING,
AVAILABLESTOCKQUANTITY TYPE STRING,
COVEREDBYSTOCKQUANTITY TYPE STRING,
UNITOFMEASURE TYPE STRING,
QUOTAARRANGEMENTPERCENT TYPE STRING,
PMRPREQUIREMENTCATEGORY TYPE STRING,
TOPLEVELDEMANDINTERNALID TYPE STRING,
PMRPBUCKETCATEGORY TYPE STRING,
PMRPREFERENCEPLAN TYPE STRING,
ORIGLQUOTAARRANGEMENTPERCENT TYPE STRING,
ALTERNATIVEITEMPRIORITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPMRPRQMT_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_IPMRPRQMT_STR-MANDT sy-vline 
WA_IPMRPRQMT_STR-PMRPSIMULATION sy-vline 
WA_IPMRPRQMT_STR-PMRPNODEID sy-vline 
WA_IPMRPRQMT_STR-PMRPPARENTNODEID sy-vline 
WA_IPMRPRQMT_STR-RECEIPTINTERNALID sy-vline 
WA_IPMRPRQMT_STR-PARENTRECEIPTINTERNALID sy-vline 
WA_IPMRPRQMT_STR-REQUIREMENTINTERNALID sy-vline 
WA_IPMRPRQMT_STR-PRODUCT sy-vline 
WA_IPMRPRQMT_STR-PLANT sy-vline 
WA_IPMRPRQMT_STR-MRPAREA sy-vline 
WA_IPMRPRQMT_STR-PMRPRECEIPTCATEGORY sy-vline 
WA_IPMRPRQMT_STR-RECEIPTSTARTDATE sy-vline 
WA_IPMRPRQMT_STR-RECEIPTENDDATE sy-vline 
WA_IPMRPRQMT_STR-PMRPSOURCEOFSUPPLYINTERNALID sy-vline 
WA_IPMRPRQMT_STR-REQUIREMENTSTARTDATE sy-vline 
WA_IPMRPRQMT_STR-REQUIREMENTENDDATE sy-vline 
WA_IPMRPRQMT_STR-PMRPRECEIPTSUPPLYENDDATE sy-vline 
WA_IPMRPRQMT_STR-REQUIREDQUANTITY sy-vline 
WA_IPMRPRQMT_STR-PMRPRECEIPTQUANTITY sy-vline 
WA_IPMRPRQMT_STR-PULLINQUANTITY sy-vline 
WA_IPMRPRQMT_STR-AVAILABLESTOCKQUANTITY sy-vline 
WA_IPMRPRQMT_STR-COVEREDBYSTOCKQUANTITY sy-vline 
WA_IPMRPRQMT_STR-UNITOFMEASURE sy-vline 
WA_IPMRPRQMT_STR-QUOTAARRANGEMENTPERCENT sy-vline 
WA_IPMRPRQMT_STR-PMRPREQUIREMENTCATEGORY sy-vline 
WA_IPMRPRQMT_STR-TOPLEVELDEMANDINTERNALID sy-vline 
WA_IPMRPRQMT_STR-PMRPBUCKETCATEGORY sy-vline 
WA_IPMRPRQMT_STR-PMRPREFERENCEPLAN sy-vline 
WA_IPMRPRQMT_STR-ORIGLQUOTAARRANGEMENTPERCENT sy-vline 
WA_IPMRPRQMT_STR-ALTERNATIVEITEMPRIORITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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