ABAP Select data from SAP table ELACCZT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ELACCZT
*  INTO TABLE @DATA(IT_ELACCZT2).
*--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_ELACCZT INDEX 1 INTO DATA(WA_ELACCZT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ELACCZT>-MANDT = 1.
<ELACCZT>-VKONT = 1.
<ELACCZT>-LP_CODE = 1.
<ELACCZT>-LP_ACCLNBR = 1.
<ELACCZT>-LP_CDFL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ELACCZT-LP_RDMFL, sy-vline,
  WA_ELACCZT-LP_CANCFL, sy-vline,
  WA_ELACCZT-LP_ACCLN_PT, sy-vline,
  WA_ELACCZT-LP_CRT_DATE, sy-vline,
  WA_ELACCZT-LP_REFOBJTYP, sy-vline,
  WA_ELACCZT-LP_REFOBJNBR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ELACCZT 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_ELACCZT 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_ELACCZT INTO WA_ELACCZT.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field LP_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ELACCZT-LP_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ELACCZT-LP_UNIT.
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_ELACCZT_STR, 
MANDT TYPE STRING,
VKONT TYPE STRING,
LP_CODE TYPE STRING,
LP_ACCLNBR TYPE STRING,
LP_CDFL TYPE STRING,
LP_RDMFL TYPE STRING,
LP_CANCFL TYPE STRING,
LP_ACCLN_PT TYPE STRING,
LP_CRT_DATE TYPE STRING,
LP_REFOBJTYP TYPE STRING,
LP_REFOBJNBR TYPE STRING,
LP_RDMNBR TYPE STRING,
ALT_VKONT TYPE STRING,
ALT_LP_CODE TYPE STRING,
VERTRAG TYPE STRING,
BUKRS TYPE STRING,
SPARTE TYPE STRING,
PARTNER TYPE STRING,
LP_PTEXP_DATE TYPE STRING,
LP_EVENT TYPE STRING,
LP_CRMD TYPE STRING,
LP_UNIT TYPE STRING,
LP_RWRD TYPE STRING,
LP_EVENTT TYPE STRING,
LP_RWRDTT TYPE STRING,
SELECTED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ELACCZT_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_ELACCZT_STR-MANDT sy-vline 
WA_ELACCZT_STR-VKONT sy-vline 
WA_ELACCZT_STR-LP_CODE sy-vline 
WA_ELACCZT_STR-LP_ACCLNBR sy-vline 
WA_ELACCZT_STR-LP_CDFL sy-vline 
WA_ELACCZT_STR-LP_RDMFL sy-vline 
WA_ELACCZT_STR-LP_CANCFL sy-vline 
WA_ELACCZT_STR-LP_ACCLN_PT sy-vline 
WA_ELACCZT_STR-LP_CRT_DATE sy-vline 
WA_ELACCZT_STR-LP_REFOBJTYP sy-vline 
WA_ELACCZT_STR-LP_REFOBJNBR sy-vline 
WA_ELACCZT_STR-LP_RDMNBR sy-vline 
WA_ELACCZT_STR-ALT_VKONT sy-vline 
WA_ELACCZT_STR-ALT_LP_CODE sy-vline 
WA_ELACCZT_STR-VERTRAG sy-vline 
WA_ELACCZT_STR-BUKRS sy-vline 
WA_ELACCZT_STR-SPARTE sy-vline 
WA_ELACCZT_STR-PARTNER sy-vline 
WA_ELACCZT_STR-LP_PTEXP_DATE sy-vline 
WA_ELACCZT_STR-LP_EVENT sy-vline 
WA_ELACCZT_STR-LP_CRMD sy-vline 
WA_ELACCZT_STR-LP_UNIT sy-vline 
WA_ELACCZT_STR-LP_RWRD sy-vline 
WA_ELACCZT_STR-LP_EVENTT sy-vline 
WA_ELACCZT_STR-LP_RWRDTT sy-vline 
WA_ELACCZT_STR-SELECTED sy-vline      INTO ld_text SEPARATED BY SPACE.

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