ABAP Select data from SAP table ENT3052 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT3052 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 ENT3052. 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 ENT3052 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_ENT3052 TYPE STANDARD TABLE OF ENT3052,
      WA_ENT3052 TYPE ENT3052,
      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: <ENT3052> TYPE ENT3052.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT3052.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT3052
  INTO TABLE IT_ENT3052.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT3052
*  INTO TABLE @DATA(IT_ENT30522).
*--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_ENT3052 INDEX 1 INTO DATA(WA_ENT30522).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT3052 ASSIGNING <ENT3052>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT3052>-MANDT = 1.
<ENT3052>-OBJNR = 1.
<ENT3052>-BUKRS = 1.
<ENT3052>-ANLKL = 1.
<ENT3052>-GEGST = 1.

ENDLOOP.

LOOP AT IT_ENT3052 INTO WA_ENT3052.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT3052-ANLAR, sy-vline,
  WA_ENT3052-KTOGR, sy-vline,
  WA_ENT3052-ERNAM, sy-vline,
  WA_ENT3052-ERDAT, sy-vline,
  WA_ENT3052-AENAM, sy-vline,
  WA_ENT3052-AEDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT3052 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_ENT3052 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_ENT3052 INTO WA_ENT3052.


*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 ANLKL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT3052-ANLKL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3052-ANLKL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GEGST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT3052-GEGST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3052-GEGST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KTOGR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT3052-KTOGR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3052-KTOGR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CAUFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT3052-CAUFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3052-CAUFN.
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_ENT3052_STR, 
MANDT TYPE STRING,
OBJNR TYPE STRING,
BUKRS TYPE STRING,
ANLKL TYPE STRING,
GEGST TYPE STRING,
ANLAR TYPE STRING,
KTOGR TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AKTIV TYPE STRING,
LSTAR TYPE STRING,
MSFAK TYPE STRING,
GPLAB TYPE STRING,
CAUFN TYPE STRING,
LFDNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT3052_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_ENT3052_STR-MANDT sy-vline 
WA_ENT3052_STR-OBJNR sy-vline 
WA_ENT3052_STR-BUKRS sy-vline 
WA_ENT3052_STR-ANLKL sy-vline 
WA_ENT3052_STR-GEGST sy-vline 
WA_ENT3052_STR-ANLAR sy-vline 
WA_ENT3052_STR-KTOGR sy-vline 
WA_ENT3052_STR-ERNAM sy-vline 
WA_ENT3052_STR-ERDAT sy-vline 
WA_ENT3052_STR-AENAM sy-vline 
WA_ENT3052_STR-AEDAT sy-vline 
WA_ENT3052_STR-AKTIV sy-vline 
WA_ENT3052_STR-LSTAR sy-vline 
WA_ENT3052_STR-MSFAK sy-vline 
WA_ENT3052_STR-GPLAB sy-vline 
WA_ENT3052_STR-CAUFN sy-vline 
WA_ENT3052_STR-LFDNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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