ABAP Select data from SAP table APURGQTA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM APURGQTA
*  INTO TABLE @DATA(IT_APURGQTA2).
*--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_APURGQTA INDEX 1 INTO DATA(WA_APURGQTA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<APURGQTA>-MANDT = 1.
<APURGQTA>-QUOTAARRANGEMENT = 1.
<APURGQTA>-MATERIAL = 1.
<APURGQTA>-PLANT = 1.
<APURGQTA>-VALIDITYENDDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_APURGQTA-VALIDITYSTARTDATE, sy-vline,
  WA_APURGQTA-CREATIONDATE, sy-vline,
  WA_APURGQTA-CREATEDBYUSER, sy-vline,
  WA_APURGQTA-MINQTYFORSPLTQUOTA, sy-vline,
  WA_APURGQTA-LASTCHANGEDATETIME, sy-vline,
  WA_APURGQTA-USERDESCRIPTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_APURGQTA 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_APURGQTA 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_APURGQTA INTO WA_APURGQTA.


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

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

*Conversion exit CUNIT, internal->external for field MATERIALBASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_APURGQTA-MATERIALBASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_APURGQTA-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_APURGQTA_STR, 
MANDT TYPE STRING,
QUOTAARRANGEMENT TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
VALIDITYENDDATE TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
MINQTYFORSPLTQUOTA TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
USERDESCRIPTION TYPE STRING,
MATERIALBASEUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_APURGQTA_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_APURGQTA_STR-MANDT sy-vline 
WA_APURGQTA_STR-QUOTAARRANGEMENT sy-vline 
WA_APURGQTA_STR-MATERIAL sy-vline 
WA_APURGQTA_STR-PLANT sy-vline 
WA_APURGQTA_STR-VALIDITYENDDATE sy-vline 
WA_APURGQTA_STR-VALIDITYSTARTDATE sy-vline 
WA_APURGQTA_STR-CREATIONDATE sy-vline 
WA_APURGQTA_STR-CREATEDBYUSER sy-vline 
WA_APURGQTA_STR-MINQTYFORSPLTQUOTA sy-vline 
WA_APURGQTA_STR-LASTCHANGEDATETIME sy-vline 
WA_APURGQTA_STR-USERDESCRIPTION sy-vline 
WA_APURGQTA_STR-MATERIALBASEUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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