ABAP Select data from SAP table ACEDS_PERIODATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ACEDS_PERIODATTR
*  INTO TABLE @DATA(IT_ACEDS_PERIODATTR2).
*--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_ACEDS_PERIODATTR INDEX 1 INTO DATA(WA_ACEDS_PERIODATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ACEDS_PERIODATTR>-ACRTYPE = 1.
<ACEDS_PERIODATTR>-ACCRULE = 1.
<ACEDS_PERIODATTR>-PERIOD_END_DATE = 1.
<ACEDS_PERIODATTR>-PERIOD_START_DATE = 1.
<ACEDS_PERIODATTR>-UPLOADED_ACCR_AMNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ACEDS_PERIODATTR-UPLOADED_ACCR_AMNT_CUKEY, sy-vline,
  WA_ACEDS_PERIODATTR-PROPOSED_ACCR_AMNT, sy-vline,
  WA_ACEDS_PERIODATTR-PROPOSED_ACCR_AMNT_CUKEY, sy-vline,
  WA_ACEDS_PERIODATTR-ADJSTMNT_ACCR_AMNT, sy-vline,
  WA_ACEDS_PERIODATTR-ADJSTMNT_ACCR_AMNT_CUKEY, sy-vline,
  WA_ACEDS_PERIODATTR-ADJSTMNT_REASON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ACEDS_PERIODATTR 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_ACEDS_PERIODATTR 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_ACEDS_PERIODATTR INTO WA_ACEDS_PERIODATTR.


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

*Conversion exit AC152, internal->external for field UPLOADED_ACCR_AMNT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_ACEDS_PERIODATTR-UPLOADED_ACCR_AMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACEDS_PERIODATTR-UPLOADED_ACCR_AMNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field PROPOSED_ACCR_AMNT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_ACEDS_PERIODATTR-PROPOSED_ACCR_AMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACEDS_PERIODATTR-PROPOSED_ACCR_AMNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field ADJSTMNT_ACCR_AMNT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_ACEDS_PERIODATTR-ADJSTMNT_ACCR_AMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACEDS_PERIODATTR-ADJSTMNT_ACCR_AMNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field REVWD_APPRVD_AMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_ACEDS_PERIODATTR-REVWD_APPRVD_AMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACEDS_PERIODATTR-REVWD_APPRVD_AMOUNT.
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_ACEDS_PERIODATTR_STR, 
ACRTYPE TYPE STRING,
ACCRULE TYPE STRING,
PERIOD_END_DATE TYPE STRING,
PERIOD_START_DATE TYPE STRING,
UPLOADED_ACCR_AMNT TYPE STRING,
UPLOADED_ACCR_AMNT_CUKEY TYPE STRING,
PROPOSED_ACCR_AMNT TYPE STRING,
PROPOSED_ACCR_AMNT_CUKEY TYPE STRING,
ADJSTMNT_ACCR_AMNT TYPE STRING,
ADJSTMNT_ACCR_AMNT_CUKEY TYPE STRING,
ADJSTMNT_REASON TYPE STRING,
ADJSTMNT_COMMENT TYPE STRING,
XREVIEWED TYPE STRING,
REVIEW_TYPE TYPE STRING,
REVIEWED_BY TYPE STRING,
REVIEWED_ON TYPE STRING,
REVIEWED_AT TYPE STRING,
XAPPROVED TYPE STRING,
APPROVAL_TYPE TYPE STRING,
APPROVED_BY TYPE STRING,
APPROVED_ON TYPE STRING,
APPROVED_AT TYPE STRING,
REVWD_APPRVD_AMOUNT TYPE STRING,
REVWD_APPRVD_AMOUNT_CUKEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ACEDS_PERIODATTR_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_ACEDS_PERIODATTR_STR-ACRTYPE sy-vline 
WA_ACEDS_PERIODATTR_STR-ACCRULE sy-vline 
WA_ACEDS_PERIODATTR_STR-PERIOD_END_DATE sy-vline 
WA_ACEDS_PERIODATTR_STR-PERIOD_START_DATE sy-vline 
WA_ACEDS_PERIODATTR_STR-UPLOADED_ACCR_AMNT sy-vline 
WA_ACEDS_PERIODATTR_STR-UPLOADED_ACCR_AMNT_CUKEY sy-vline 
WA_ACEDS_PERIODATTR_STR-PROPOSED_ACCR_AMNT sy-vline 
WA_ACEDS_PERIODATTR_STR-PROPOSED_ACCR_AMNT_CUKEY sy-vline 
WA_ACEDS_PERIODATTR_STR-ADJSTMNT_ACCR_AMNT sy-vline 
WA_ACEDS_PERIODATTR_STR-ADJSTMNT_ACCR_AMNT_CUKEY sy-vline 
WA_ACEDS_PERIODATTR_STR-ADJSTMNT_REASON sy-vline 
WA_ACEDS_PERIODATTR_STR-ADJSTMNT_COMMENT sy-vline 
WA_ACEDS_PERIODATTR_STR-XREVIEWED sy-vline 
WA_ACEDS_PERIODATTR_STR-REVIEW_TYPE sy-vline 
WA_ACEDS_PERIODATTR_STR-REVIEWED_BY sy-vline 
WA_ACEDS_PERIODATTR_STR-REVIEWED_ON sy-vline 
WA_ACEDS_PERIODATTR_STR-REVIEWED_AT sy-vline 
WA_ACEDS_PERIODATTR_STR-XAPPROVED sy-vline 
WA_ACEDS_PERIODATTR_STR-APPROVAL_TYPE sy-vline 
WA_ACEDS_PERIODATTR_STR-APPROVED_BY sy-vline 
WA_ACEDS_PERIODATTR_STR-APPROVED_ON sy-vline 
WA_ACEDS_PERIODATTR_STR-APPROVED_AT sy-vline 
WA_ACEDS_PERIODATTR_STR-REVWD_APPRVD_AMOUNT sy-vline 
WA_ACEDS_PERIODATTR_STR-REVWD_APPRVD_AMOUNT_CUKEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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