ABAP Select data from SAP table AT80 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AT80 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 AT80. 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 AT80 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_AT80 TYPE STANDARD TABLE OF AT80,
      WA_AT80 TYPE AT80,
      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: <AT80> TYPE AT80.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_AT80.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM AT80
  INTO TABLE IT_AT80.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AT80
*  INTO TABLE @DATA(IT_AT802).
*--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_AT80 INDEX 1 INTO DATA(WA_AT802).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_AT80 ASSIGNING <AT80>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AT80>-MANDT = 1.
<AT80>-BUKRS = 1.
<AT80>-SGSART = 1.
<AT80>-SFHAART = 1.
<AT80>-SFGZUSTT = 1.

ENDLOOP.

LOOP AT IT_AT80 INTO WA_AT80.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AT80-SFUNKTL, sy-vline,
  WA_AT80-CORTYP, sy-vline,
  WA_AT80-FORMULAR, sy-vline,
  WA_AT80-AUTOMATIC, sy-vline,
  WA_AT80-SOBLRECONF, sy-vline,
  WA_AT80-TDCOPIES, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AT80 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_AT80 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_AT80 INTO WA_AT80.


*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 SPDEV, internal->external for field TDDEST
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_AT80-TDDEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AT80-TDDEST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SPDEV, internal->external for field FDDEST
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_AT80-FDDEST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AT80-FDDEST.
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_AT80_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
SGSART TYPE STRING,
SFHAART TYPE STRING,
SFGZUSTT TYPE STRING,
SFUNKTL TYPE STRING,
CORTYP TYPE STRING,
FORMULAR TYPE STRING,
AUTOMATIC TYPE STRING,
SOBLRECONF TYPE STRING,
TDCOPIES TYPE STRING,
TDDEST TYPE STRING,
TDPREVIEW TYPE STRING,
TDNOPRINT TYPE STRING,
TDNEWID TYPE STRING,
TDDATASET TYPE STRING,
TDSUFFIX1 TYPE STRING,
TDSUFFIX2 TYPE STRING,
TDIMMED TYPE STRING,
TDDELETE TYPE STRING,
TDLIFETIME TYPE STRING,
TDSCHEDULE TYPE STRING,
TDSENDDATE TYPE STRING,
TDSENDTIME TYPE STRING,
TDTITLE TYPE STRING,
TDCOVER TYPE STRING,
TDCOVTITLE TYPE STRING,
TDARMOD TYPE STRING,
FDCOPIES TYPE STRING,
FDDEST TYPE STRING,
FDPREVIEW TYPE STRING,
FDNOPRINT TYPE STRING,
FDNEWID TYPE STRING,
FDDATASET TYPE STRING,
FDSUFFIX1 TYPE STRING,
FDSUFFIX2 TYPE STRING,
FDIMMED TYPE STRING,
FDDELETE TYPE STRING,
FDLIFETIME TYPE STRING,
FDSCHEDULE TYPE STRING,
FDSENDDATE TYPE STRING,
FDSENDTIME TYPE STRING,
FDTITLE TYPE STRING,
FDCOVER TYPE STRING,
FDCOVTITLE TYPE STRING,
FDARMOD TYPE STRING,
SFORMCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AT80_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_AT80_STR-MANDT sy-vline 
WA_AT80_STR-BUKRS sy-vline 
WA_AT80_STR-SGSART sy-vline 
WA_AT80_STR-SFHAART sy-vline 
WA_AT80_STR-SFGZUSTT sy-vline 
WA_AT80_STR-SFUNKTL sy-vline 
WA_AT80_STR-CORTYP sy-vline 
WA_AT80_STR-FORMULAR sy-vline 
WA_AT80_STR-AUTOMATIC sy-vline 
WA_AT80_STR-SOBLRECONF sy-vline 
WA_AT80_STR-TDCOPIES sy-vline 
WA_AT80_STR-TDDEST sy-vline 
WA_AT80_STR-TDPREVIEW sy-vline 
WA_AT80_STR-TDNOPRINT sy-vline 
WA_AT80_STR-TDNEWID sy-vline 
WA_AT80_STR-TDDATASET sy-vline 
WA_AT80_STR-TDSUFFIX1 sy-vline 
WA_AT80_STR-TDSUFFIX2 sy-vline 
WA_AT80_STR-TDIMMED sy-vline 
WA_AT80_STR-TDDELETE sy-vline 
WA_AT80_STR-TDLIFETIME sy-vline 
WA_AT80_STR-TDSCHEDULE sy-vline 
WA_AT80_STR-TDSENDDATE sy-vline 
WA_AT80_STR-TDSENDTIME sy-vline 
WA_AT80_STR-TDTITLE sy-vline 
WA_AT80_STR-TDCOVER sy-vline 
WA_AT80_STR-TDCOVTITLE sy-vline 
WA_AT80_STR-TDARMOD sy-vline 
WA_AT80_STR-FDCOPIES sy-vline 
WA_AT80_STR-FDDEST sy-vline 
WA_AT80_STR-FDPREVIEW sy-vline 
WA_AT80_STR-FDNOPRINT sy-vline 
WA_AT80_STR-FDNEWID sy-vline 
WA_AT80_STR-FDDATASET sy-vline 
WA_AT80_STR-FDSUFFIX1 sy-vline 
WA_AT80_STR-FDSUFFIX2 sy-vline 
WA_AT80_STR-FDIMMED sy-vline 
WA_AT80_STR-FDDELETE sy-vline 
WA_AT80_STR-FDLIFETIME sy-vline 
WA_AT80_STR-FDSCHEDULE sy-vline 
WA_AT80_STR-FDSENDDATE sy-vline 
WA_AT80_STR-FDSENDTIME sy-vline 
WA_AT80_STR-FDTITLE sy-vline 
WA_AT80_STR-FDCOVER sy-vline 
WA_AT80_STR-FDCOVTITLE sy-vline 
WA_AT80_STR-FDARMOD sy-vline 
WA_AT80_STR-SFORMCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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