ABAP Select data from SAP table IMRPAVAILABILITY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IMRPAVAILABILITY
*  INTO TABLE @DATA(IT_IMRPAVAILABILITY2).
*--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_IMRPAVAILABILITY INDEX 1 INTO DATA(WA_IMRPAVAILABILITY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IMRPAVAILABILITY>-MANDT = 1.
<IMRPAVAILABILITY>-MRPPLANT = 1.
<IMRPAVAILABILITY>-MATERIAL = 1.
<IMRPAVAILABILITY>-MRPAREA = 1.
<IMRPAVAILABILITY>-MRPPLANNINGSEGMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IMRPAVAILABILITY-MRPPLANNINGSEGMENT, sy-vline,
  WA_IMRPAVAILABILITY-MATERIALSHORTAGEPROFILE, sy-vline,
  WA_IMRPAVAILABILITY-MATERIALSHORTAGEPROFILECOUNT, sy-vline,
  WA_IMRPAVAILABILITY-MRPELEMENTAVAILYORRQMTDATE, sy-vline,
  WA_IMRPAVAILABILITY-MATERIALBASEUNIT, sy-vline,
  WA_IMRPAVAILABILITY-MRPAVAILABLEQUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IMRPAVAILABILITY 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_IMRPAVAILABILITY 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_IMRPAVAILABILITY INTO WA_IMRPAVAILABILITY.


*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 MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IMRPAVAILABILITY-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMRPAVAILABILITY-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MATERIALBASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IMRPAVAILABILITY-MATERIALBASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IMRPAVAILABILITY-MATERIALBASEUNIT.
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_IMRPAVAILABILITY_STR, 
MANDT TYPE STRING,
MRPPLANT TYPE STRING,
MATERIAL TYPE STRING,
MRPAREA TYPE STRING,
MRPPLANNINGSEGMENTTYPE TYPE STRING,
MRPPLANNINGSEGMENT TYPE STRING,
MATERIALSHORTAGEPROFILE TYPE STRING,
MATERIALSHORTAGEPROFILECOUNT TYPE STRING,
MRPELEMENTAVAILYORRQMTDATE TYPE STRING,
MATERIALBASEUNIT TYPE STRING,
MRPAVAILABLEQUANTITY TYPE STRING,
MRPAVAILABILITY TYPE STRING,
PLANNINGSEGMENTDOCUMENT TYPE STRING,
PLANNINGSEGMENTDOCUMENTITEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IMRPAVAILABILITY_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_IMRPAVAILABILITY_STR-MANDT sy-vline 
WA_IMRPAVAILABILITY_STR-MRPPLANT sy-vline 
WA_IMRPAVAILABILITY_STR-MATERIAL sy-vline 
WA_IMRPAVAILABILITY_STR-MRPAREA sy-vline 
WA_IMRPAVAILABILITY_STR-MRPPLANNINGSEGMENTTYPE sy-vline 
WA_IMRPAVAILABILITY_STR-MRPPLANNINGSEGMENT sy-vline 
WA_IMRPAVAILABILITY_STR-MATERIALSHORTAGEPROFILE sy-vline 
WA_IMRPAVAILABILITY_STR-MATERIALSHORTAGEPROFILECOUNT sy-vline 
WA_IMRPAVAILABILITY_STR-MRPELEMENTAVAILYORRQMTDATE sy-vline 
WA_IMRPAVAILABILITY_STR-MATERIALBASEUNIT sy-vline 
WA_IMRPAVAILABILITY_STR-MRPAVAILABLEQUANTITY sy-vline 
WA_IMRPAVAILABILITY_STR-MRPAVAILABILITY sy-vline 
WA_IMRPAVAILABILITY_STR-PLANNINGSEGMENTDOCUMENT sy-vline 
WA_IMRPAVAILABILITY_STR-PLANNINGSEGMENTDOCUMENTITEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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