ABAP Select data from SAP table T464 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T464 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 T464. 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 T464 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_T464 TYPE STANDARD TABLE OF T464,
      WA_T464 TYPE T464,
      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: <T464> TYPE T464.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T464.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T464
  INTO TABLE IT_T464.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T464
*  INTO TABLE @DATA(IT_T4642).
*--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_T464 INDEX 1 INTO DATA(WA_T4642).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T464 ASSIGNING <T464>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T464>-MANDT = 1.
<T464>-PROFID = 1.
<T464>-AENAM = 1.
<T464>-PROTECT = 1.
<T464>-HIER_LEVEL = 1.

ENDLOOP.

LOOP AT IT_T464 INTO WA_T464.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T464-KZKAU, sy-vline,
  WA_T464-ADOBJ, sy-vline,
  WA_T464-EXCMRPLOGIC, sy-vline,
  WA_T464-AVAILDATELOGIC, sy-vline,
  WA_T464-AVAILATPLOGIC, sy-vline,
  WA_T464-AVAILSSTOCK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T464 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_T464 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_T464 INTO WA_T464.


*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 MEIVT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_T464-MEIVT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T464-MEIVT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEIVE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_T464-MEIVE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T464-MEIVE.
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_T464_STR, 
MANDT TYPE STRING,
PROFID TYPE STRING,
AENAM TYPE STRING,
PROTECT TYPE STRING,
HIER_LEVEL TYPE STRING,
KZKAU TYPE STRING,
ADOBJ TYPE STRING,
EXCMRPLOGIC TYPE STRING,
AVAILDATELOGIC TYPE STRING,
AVAILATPLOGIC TYPE STRING,
AVAILSSTOCK TYPE STRING,
EXCQUANTITY TYPE STRING,
PR_MENDIF TYPE STRING,
EXCDATE TYPE STRING,
TATVZ TYPE STRING,
MEIVT TYPE STRING,
ERWVZ TYPE STRING,
MEIVE TYPE STRING,
ADDMATERIAL TYPE STRING,
REORDER TYPE STRING,
BULKMAT TYPE STRING,
COBYPRODUCT TYPE STRING,
ADDELEMENT TYPE STRING,
PIPELINE TYPE STRING,
USEBUFFER TYPE STRING,
MLDELAY TYPE STRING,
MLAPPROACH TYPE STRING,
MLOPER TYPE STRING,
SLDELAY TYPE STRING,
MLGREEN TYPE STRING,
MLYELLOW TYPE STRING,
MLRED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T464_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_T464_STR-MANDT sy-vline 
WA_T464_STR-PROFID sy-vline 
WA_T464_STR-AENAM sy-vline 
WA_T464_STR-PROTECT sy-vline 
WA_T464_STR-HIER_LEVEL sy-vline 
WA_T464_STR-KZKAU sy-vline 
WA_T464_STR-ADOBJ sy-vline 
WA_T464_STR-EXCMRPLOGIC sy-vline 
WA_T464_STR-AVAILDATELOGIC sy-vline 
WA_T464_STR-AVAILATPLOGIC sy-vline 
WA_T464_STR-AVAILSSTOCK sy-vline 
WA_T464_STR-EXCQUANTITY sy-vline 
WA_T464_STR-PR_MENDIF sy-vline 
WA_T464_STR-EXCDATE sy-vline 
WA_T464_STR-TATVZ sy-vline 
WA_T464_STR-MEIVT sy-vline 
WA_T464_STR-ERWVZ sy-vline 
WA_T464_STR-MEIVE sy-vline 
WA_T464_STR-ADDMATERIAL sy-vline 
WA_T464_STR-REORDER sy-vline 
WA_T464_STR-BULKMAT sy-vline 
WA_T464_STR-COBYPRODUCT sy-vline 
WA_T464_STR-ADDELEMENT sy-vline 
WA_T464_STR-PIPELINE sy-vline 
WA_T464_STR-USEBUFFER sy-vline 
WA_T464_STR-MLDELAY sy-vline 
WA_T464_STR-MLAPPROACH sy-vline 
WA_T464_STR-MLOPER sy-vline 
WA_T464_STR-SLDELAY sy-vline 
WA_T464_STR-MLGREEN sy-vline 
WA_T464_STR-MLYELLOW sy-vline 
WA_T464_STR-MLRED sy-vline      INTO ld_text SEPARATED BY SPACE.

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