ABAP Select data from SAP table CRTWIPLMONTHHIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRTWIPLMONTHHIST
*  INTO TABLE @DATA(IT_CRTWIPLMONTHHIST2).
*--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_CRTWIPLMONTHHIST INDEX 1 INTO DATA(WA_CRTWIPLMONTHHIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRTWIPLMONTHHIST>-MANDT = 1.
<CRTWIPLMONTHHIST>-ORDERID = 1.
<CRTWIPLMONTHHIST>-COMPANYCODE = 1.
<CRTWIPLMONTHHIST>-KEYDATE = 1.
<CRTWIPLMONTHHIST>-MFGORDERHASMULTIPLEITEMS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRTWIPLMONTHHIST-MFGORDERWITHMULTIPLEITEMSTEXT, sy-vline,
  WA_CRTWIPLMONTHHIST-COMPANYCODENAME, sy-vline,
  WA_CRTWIPLMONTHHIST-MATERIAL, sy-vline,
  WA_CRTWIPLMONTHHIST-MATERIALNAME, sy-vline,
  WA_CRTWIPLMONTHHIST-MATERIALGROUP, sy-vline,
  WA_CRTWIPLMONTHHIST-MATERIALGROUPNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRTWIPLMONTHHIST 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_CRTWIPLMONTHHIST 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_CRTWIPLMONTHHIST INTO WA_CRTWIPLMONTHHIST.


*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 ALPHA, internal->external for field ORDERID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRTWIPLMONTHHIST-ORDERID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRTWIPLMONTHHIST-ORDERID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field PROFITCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRTWIPLMONTHHIST-PROFITCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRTWIPLMONTHHIST-PROFITCENTER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RATIOUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRTWIPLMONTHHIST-RATIOUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRTWIPLMONTHHIST-RATIOUNIT.
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_CRTWIPLMONTHHIST_STR, 
MANDT TYPE STRING,
ORDERID TYPE STRING,
COMPANYCODE TYPE STRING,
KEYDATE TYPE STRING,
MFGORDERHASMULTIPLEITEMS TYPE STRING,
MFGORDERWITHMULTIPLEITEMSTEXT TYPE STRING,
COMPANYCODENAME TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIALGROUPNAME TYPE STRING,
ORDERTYPE TYPE STRING,
ORDERTYPENAME TYPE STRING,
ORDERCATEGORY TYPE STRING,
ORDERCATEGORYNAME TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,
STORAGELOCATION TYPE STRING,
STORAGELOCATIONNAME TYPE STRING,
PROFITCENTER TYPE STRING,
PROFITCENTERNAME TYPE STRING,
FUNCTIONALAREA TYPE STRING,
FUNCTIONALAREANAME TYPE STRING,
WIPCOSTINDSPCRCY TYPE STRING,
TOTALWIPAMOUNTINDSPCRCY TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
LASTCHANGEDATE TYPE STRING,
MRPAREA TYPE STRING,
MRPPLANT TYPE STRING,
DIFFERENCEAMOUNT TYPE STRING,
KPITARGETVALUE1 TYPE STRING,
RATIOUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRTWIPLMONTHHIST_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_CRTWIPLMONTHHIST_STR-MANDT sy-vline 
WA_CRTWIPLMONTHHIST_STR-ORDERID sy-vline 
WA_CRTWIPLMONTHHIST_STR-COMPANYCODE sy-vline 
WA_CRTWIPLMONTHHIST_STR-KEYDATE sy-vline 
WA_CRTWIPLMONTHHIST_STR-MFGORDERHASMULTIPLEITEMS sy-vline 
WA_CRTWIPLMONTHHIST_STR-MFGORDERWITHMULTIPLEITEMSTEXT sy-vline 
WA_CRTWIPLMONTHHIST_STR-COMPANYCODENAME sy-vline 
WA_CRTWIPLMONTHHIST_STR-MATERIAL sy-vline 
WA_CRTWIPLMONTHHIST_STR-MATERIALNAME sy-vline 
WA_CRTWIPLMONTHHIST_STR-MATERIALGROUP sy-vline 
WA_CRTWIPLMONTHHIST_STR-MATERIALGROUPNAME sy-vline 
WA_CRTWIPLMONTHHIST_STR-ORDERTYPE sy-vline 
WA_CRTWIPLMONTHHIST_STR-ORDERTYPENAME sy-vline 
WA_CRTWIPLMONTHHIST_STR-ORDERCATEGORY sy-vline 
WA_CRTWIPLMONTHHIST_STR-ORDERCATEGORYNAME sy-vline 
WA_CRTWIPLMONTHHIST_STR-PLANT sy-vline 
WA_CRTWIPLMONTHHIST_STR-PLANTNAME sy-vline 
WA_CRTWIPLMONTHHIST_STR-STORAGELOCATION sy-vline 
WA_CRTWIPLMONTHHIST_STR-STORAGELOCATIONNAME sy-vline 
WA_CRTWIPLMONTHHIST_STR-PROFITCENTER sy-vline 
WA_CRTWIPLMONTHHIST_STR-PROFITCENTERNAME sy-vline 
WA_CRTWIPLMONTHHIST_STR-FUNCTIONALAREA sy-vline 
WA_CRTWIPLMONTHHIST_STR-FUNCTIONALAREANAME sy-vline 
WA_CRTWIPLMONTHHIST_STR-WIPCOSTINDSPCRCY sy-vline 
WA_CRTWIPLMONTHHIST_STR-TOTALWIPAMOUNTINDSPCRCY sy-vline 
WA_CRTWIPLMONTHHIST_STR-DISPLAYCURRENCY sy-vline 
WA_CRTWIPLMONTHHIST_STR-CREATEDBYUSER sy-vline 
WA_CRTWIPLMONTHHIST_STR-CREATIONDATE sy-vline 
WA_CRTWIPLMONTHHIST_STR-LASTCHANGEDBYUSER sy-vline 
WA_CRTWIPLMONTHHIST_STR-LASTCHANGEDATE sy-vline 
WA_CRTWIPLMONTHHIST_STR-MRPAREA sy-vline 
WA_CRTWIPLMONTHHIST_STR-MRPPLANT sy-vline 
WA_CRTWIPLMONTHHIST_STR-DIFFERENCEAMOUNT sy-vline 
WA_CRTWIPLMONTHHIST_STR-KPITARGETVALUE1 sy-vline 
WA_CRTWIPLMONTHHIST_STR-RATIOUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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