ABAP Select data from SAP table CWREQNAVGAPPTIME into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CWREQNAVGAPPTIME
*  INTO TABLE @DATA(IT_CWREQNAVGAPPTIME2).
*--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_CWREQNAVGAPPTIME INDEX 1 INTO DATA(WA_CWREQNAVGAPPTIME2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CWREQNAVGAPPTIME>-MANDT = 1.
<CWREQNAVGAPPTIME>-PURCHASEREQUISITION = 1.
<CWREQNAVGAPPTIME>-PURCHASEREQUISITIONITEM = 1.
<CWREQNAVGAPPTIME>-SUPPLIER = 1.
<CWREQNAVGAPPTIME>-SUPPLIERNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CWREQNAVGAPPTIME-SUPPLIERCOUNTRY, sy-vline,
  WA_CWREQNAVGAPPTIME-COUNTRYNAME, sy-vline,
  WA_CWREQNAVGAPPTIME-PROCUREMENTHUBSOURCESYSTEM, sy-vline,
  WA_CWREQNAVGAPPTIME-PLANT, sy-vline,
  WA_CWREQNAVGAPPTIME-PLANTNAME, sy-vline,
  WA_CWREQNAVGAPPTIME-MATERIAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CWREQNAVGAPPTIME 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_CWREQNAVGAPPTIME 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_CWREQNAVGAPPTIME INTO WA_CWREQNAVGAPPTIME.


*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 PURCHASEREQUISITION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CWREQNAVGAPPTIME-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWREQNAVGAPPTIME-PURCHASEREQUISITION.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CWREQNAVGAPPTIME-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWREQNAVGAPPTIME-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_CWREQNAVGAPPTIME_STR, 
MANDT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
SUPPLIERCOUNTRY TYPE STRING,
COUNTRYNAME TYPE STRING,
PROCUREMENTHUBSOURCESYSTEM TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
MATERIALGROUP TYPE STRING,
MATERIALGROUPNAME TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGORGANIZATIONNAME TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGGROUPNAME TYPE STRING,
PURCHASINGCATEGORY TYPE STRING,
PURGCATNAME TYPE STRING,
COMPANYCODE TYPE STRING,
CALENDARYEAR TYPE STRING,
CALENDARQUARTER TYPE STRING,
CALENDARMONTH TYPE STRING,
CALENDARWEEK TYPE STRING,
COSTCENTER TYPE STRING,
CREATEDBYUSER TYPE STRING,
PURREQFLXBLWRKFLWAPPRVLLEVEL TYPE STRING,
DOMAINTEXT TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
PURCHASEREQUISITIONPRICE TYPE STRING,
AVERAGEAPPROVALTIME TYPE STRING,
APPROVALDAYSFORLOWCOSTITEMS TYPE STRING,
APPROVALDAYSFORMEDIUMCOSTITEMS TYPE STRING,
APPROVALDAYSFORHIGHCOSTITEMS TYPE STRING,
APPRVLDAYSFORVERYHIGHCOSTITEMS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CWREQNAVGAPPTIME_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_CWREQNAVGAPPTIME_STR-MANDT sy-vline 
WA_CWREQNAVGAPPTIME_STR-PURCHASEREQUISITION sy-vline 
WA_CWREQNAVGAPPTIME_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_CWREQNAVGAPPTIME_STR-SUPPLIER sy-vline 
WA_CWREQNAVGAPPTIME_STR-SUPPLIERNAME sy-vline 
WA_CWREQNAVGAPPTIME_STR-SUPPLIERCOUNTRY sy-vline 
WA_CWREQNAVGAPPTIME_STR-COUNTRYNAME sy-vline 
WA_CWREQNAVGAPPTIME_STR-PROCUREMENTHUBSOURCESYSTEM sy-vline 
WA_CWREQNAVGAPPTIME_STR-PLANT sy-vline 
WA_CWREQNAVGAPPTIME_STR-PLANTNAME sy-vline 
WA_CWREQNAVGAPPTIME_STR-MATERIAL sy-vline 
WA_CWREQNAVGAPPTIME_STR-MATERIALNAME sy-vline 
WA_CWREQNAVGAPPTIME_STR-MATERIALGROUP sy-vline 
WA_CWREQNAVGAPPTIME_STR-MATERIALGROUPNAME sy-vline 
WA_CWREQNAVGAPPTIME_STR-PURCHASINGORGANIZATION sy-vline 
WA_CWREQNAVGAPPTIME_STR-PURCHASINGORGANIZATIONNAME sy-vline 
WA_CWREQNAVGAPPTIME_STR-PURCHASINGGROUP sy-vline 
WA_CWREQNAVGAPPTIME_STR-PURCHASINGGROUPNAME sy-vline 
WA_CWREQNAVGAPPTIME_STR-PURCHASINGCATEGORY sy-vline 
WA_CWREQNAVGAPPTIME_STR-PURGCATNAME sy-vline 
WA_CWREQNAVGAPPTIME_STR-COMPANYCODE sy-vline 
WA_CWREQNAVGAPPTIME_STR-CALENDARYEAR sy-vline 
WA_CWREQNAVGAPPTIME_STR-CALENDARQUARTER sy-vline 
WA_CWREQNAVGAPPTIME_STR-CALENDARMONTH sy-vline 
WA_CWREQNAVGAPPTIME_STR-CALENDARWEEK sy-vline 
WA_CWREQNAVGAPPTIME_STR-COSTCENTER sy-vline 
WA_CWREQNAVGAPPTIME_STR-CREATEDBYUSER sy-vline 
WA_CWREQNAVGAPPTIME_STR-PURREQFLXBLWRKFLWAPPRVLLEVEL sy-vline 
WA_CWREQNAVGAPPTIME_STR-DOMAINTEXT sy-vline 
WA_CWREQNAVGAPPTIME_STR-DISPLAYCURRENCY sy-vline 
WA_CWREQNAVGAPPTIME_STR-PURCHASEREQUISITIONPRICE sy-vline 
WA_CWREQNAVGAPPTIME_STR-AVERAGEAPPROVALTIME sy-vline 
WA_CWREQNAVGAPPTIME_STR-APPROVALDAYSFORLOWCOSTITEMS sy-vline 
WA_CWREQNAVGAPPTIME_STR-APPROVALDAYSFORMEDIUMCOSTITEMS sy-vline 
WA_CWREQNAVGAPPTIME_STR-APPROVALDAYSFORHIGHCOSTITEMS sy-vline 
WA_CWREQNAVGAPPTIME_STR-APPRVLDAYSFORVERYHIGHCOSTITEMS sy-vline      INTO ld_text SEPARATED BY SPACE.

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