ABAP Select data from SAP table CRSHAVAILMATANLZ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRSHAVAILMATANLZ
*  INTO TABLE @DATA(IT_CRSHAVAILMATANLZ2).
*--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_CRSHAVAILMATANLZ INDEX 1 INTO DATA(WA_CRSHAVAILMATANLZ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRSHAVAILMATANLZ>-MANDT = 1.
<CRSHAVAILMATANLZ>-EMPLOYMENTINTERNALID = 1.
<CRSHAVAILMATANLZ>-YEARMONTH = 1.
<CRSHAVAILMATANLZ>-RESOURCEDEMANDUUID = 1.
<CRSHAVAILMATANLZ>-EMPLOYEEFREECAPACITYINHOURS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRSHAVAILMATANLZ-EMPLOYEEREQUESTOPENDURATION, sy-vline,
  WA_CRSHAVAILMATANLZ-EMPLOYEEREQUESTFULFILLEDHOURS, sy-vline,
  WA_CRSHAVAILMATANLZ-TOTALREQUESTFULFILLEDHOURS, sy-vline,
  WA_CRSHAVAILMATANLZ-TOTALREQUESTOPENDURATION, sy-vline,
  WA_CRSHAVAILMATANLZ-TOTALEMPLOYEEFREEHOURS, sy-vline,
  WA_CRSHAVAILMATANLZ-UNITOFMEASURE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRSHAVAILMATANLZ 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_CRSHAVAILMATANLZ 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_CRSHAVAILMATANLZ INTO WA_CRSHAVAILMATANLZ.


*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 UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRSHAVAILMATANLZ-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRSHAVAILMATANLZ-UNITOFMEASURE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRSHAVAILMATANLZ-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRSHAVAILMATANLZ-COSTCENTER.
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_CRSHAVAILMATANLZ_STR, 
MANDT TYPE STRING,
EMPLOYMENTINTERNALID TYPE STRING,
YEARMONTH TYPE STRING,
RESOURCEDEMANDUUID TYPE STRING,
EMPLOYEEFREECAPACITYINHOURS TYPE STRING,
EMPLOYEEREQUESTOPENDURATION TYPE STRING,
EMPLOYEEREQUESTFULFILLEDHOURS TYPE STRING,
TOTALREQUESTFULFILLEDHOURS TYPE STRING,
TOTALREQUESTOPENDURATION TYPE STRING,
TOTALEMPLOYEEFREEHOURS TYPE STRING,
UNITOFMEASURE TYPE STRING,
SERVICEORGANIZATION TYPE STRING,
PROJECTVISIBILITY TYPE STRING,
ISBUSPRPSCMPLTDCUSTOMER TYPE STRING,
CUSTOMERAUTHZNGRP TYPE STRING,
ISBUSPRPSCMPLTDPROJECTMANAGER TYPE STRING,
PROJECTMANAGERAUTHZNGRP TYPE STRING,
COSTCENTER TYPE STRING,
COMPANYCODE TYPE STRING,
ISBUSINESSPURPOSECOMPLETED TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRSHAVAILMATANLZ_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_CRSHAVAILMATANLZ_STR-MANDT sy-vline 
WA_CRSHAVAILMATANLZ_STR-EMPLOYMENTINTERNALID sy-vline 
WA_CRSHAVAILMATANLZ_STR-YEARMONTH sy-vline 
WA_CRSHAVAILMATANLZ_STR-RESOURCEDEMANDUUID sy-vline 
WA_CRSHAVAILMATANLZ_STR-EMPLOYEEFREECAPACITYINHOURS sy-vline 
WA_CRSHAVAILMATANLZ_STR-EMPLOYEEREQUESTOPENDURATION sy-vline 
WA_CRSHAVAILMATANLZ_STR-EMPLOYEEREQUESTFULFILLEDHOURS sy-vline 
WA_CRSHAVAILMATANLZ_STR-TOTALREQUESTFULFILLEDHOURS sy-vline 
WA_CRSHAVAILMATANLZ_STR-TOTALREQUESTOPENDURATION sy-vline 
WA_CRSHAVAILMATANLZ_STR-TOTALEMPLOYEEFREEHOURS sy-vline 
WA_CRSHAVAILMATANLZ_STR-UNITOFMEASURE sy-vline 
WA_CRSHAVAILMATANLZ_STR-SERVICEORGANIZATION sy-vline 
WA_CRSHAVAILMATANLZ_STR-PROJECTVISIBILITY sy-vline 
WA_CRSHAVAILMATANLZ_STR-ISBUSPRPSCMPLTDCUSTOMER sy-vline 
WA_CRSHAVAILMATANLZ_STR-CUSTOMERAUTHZNGRP sy-vline 
WA_CRSHAVAILMATANLZ_STR-ISBUSPRPSCMPLTDPROJECTMANAGER sy-vline 
WA_CRSHAVAILMATANLZ_STR-PROJECTMANAGERAUTHZNGRP sy-vline 
WA_CRSHAVAILMATANLZ_STR-COSTCENTER sy-vline 
WA_CRSHAVAILMATANLZ_STR-COMPANYCODE sy-vline 
WA_CRSHAVAILMATANLZ_STR-ISBUSINESSPURPOSECOMPLETED sy-vline 
WA_CRSHAVAILMATANLZ_STR-AUTHORIZATIONGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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