ABAP Select data from SAP table IPMRPSIMCAPRQMTB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPMRPSIMCAPRQMTB
*  INTO TABLE @DATA(IT_IPMRPSIMCAPRQMTB2).
*--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_IPMRPSIMCAPRQMTB INDEX 1 INTO DATA(WA_IPMRPSIMCAPRQMTB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPMRPSIMCAPRQMTB>-MANDT = 1.
<IPMRPSIMCAPRQMTB>-PMRPSIMULATION = 1.
<IPMRPSIMCAPRQMTB>-PMRPRESOURCEINTERNALID = 1.
<IPMRPSIMCAPRQMTB>-BUCKETINTERNALID = 1.
<IPMRPSIMCAPRQMTB>-CAPACITYREQUIREMENTINTERNALID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPMRPSIMCAPRQMTB-PMRPSTANDARDVARIABLEWORKQTY, sy-vline,
  WA_IPMRPSIMCAPRQMTB-PMRPSTANDARDFIXWORKQTY, sy-vline,
  WA_IPMRPSIMCAPRQMTB-PMRPCAPACITYDEMANDQTYINSECONDS, sy-vline,
  WA_IPMRPSIMCAPRQMTB-CAPACITYBASEQTYUNIT, sy-vline,
  WA_IPMRPSIMCAPRQMTB-PMRPDURATIONINBUCKET, sy-vline,
  WA_IPMRPSIMCAPRQMTB-PMRPTOTALDURATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPMRPSIMCAPRQMTB 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_IPMRPSIMCAPRQMTB 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_IPMRPSIMCAPRQMTB INTO WA_IPMRPSIMCAPRQMTB.


*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 CAPACITYBASEQTYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IPMRPSIMCAPRQMTB-CAPACITYBASEQTYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPMRPSIMCAPRQMTB-CAPACITYBASEQTYUNIT.
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_IPMRPSIMCAPRQMTB_STR, 
MANDT TYPE STRING,
PMRPSIMULATION TYPE STRING,
PMRPRESOURCEINTERNALID TYPE STRING,
BUCKETINTERNALID TYPE STRING,
CAPACITYREQUIREMENTINTERNALID TYPE STRING,
PMRPSTANDARDVARIABLEWORKQTY TYPE STRING,
PMRPSTANDARDFIXWORKQTY TYPE STRING,
PMRPCAPACITYDEMANDQTYINSECONDS TYPE STRING,
CAPACITYBASEQTYUNIT TYPE STRING,
PMRPDURATIONINBUCKET TYPE STRING,
PMRPTOTALDURATION TYPE STRING,
RECEIPTINTERNALID TYPE STRING,
TOPLEVELDEMANDINTERNALID TYPE STRING,
PMRPRECEIPTISFROMPULLIN TYPE STRING,
PMRPTOPLVLDMNDQUANTITYFACTOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPMRPSIMCAPRQMTB_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_IPMRPSIMCAPRQMTB_STR-MANDT sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-PMRPSIMULATION sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-PMRPRESOURCEINTERNALID sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-BUCKETINTERNALID sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-CAPACITYREQUIREMENTINTERNALID sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-PMRPSTANDARDVARIABLEWORKQTY sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-PMRPSTANDARDFIXWORKQTY sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-PMRPCAPACITYDEMANDQTYINSECONDS sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-CAPACITYBASEQTYUNIT sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-PMRPDURATIONINBUCKET sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-PMRPTOTALDURATION sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-RECEIPTINTERNALID sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-TOPLEVELDEMANDINTERNALID sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-PMRPRECEIPTISFROMPULLIN sy-vline 
WA_IPMRPSIMCAPRQMTB_STR-PMRPTOPLVLDMNDQUANTITYFACTOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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