ABAP Select data from SAP table ESH_U_ASSET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_U_ASSET
*  INTO TABLE @DATA(IT_ESH_U_ASSET2).
*--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_ESH_U_ASSET INDEX 1 INTO DATA(WA_ESH_U_ASSET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_U_ASSET>-MANDT = 1.
<ESH_U_ASSET>-BUKRS = 1.
<ESH_U_ASSET>-ANLN1 = 1.
<ESH_U_ASSET>-ANLN2 = 1.
<ESH_U_ASSET>-ANLKL = 1.

ENDLOOP.

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

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


*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 ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_ASSET-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_ASSET-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_ASSET-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_ASSET-ANLN2.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit GERNR, internal->external for field SERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_ASSET-SERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_ASSET-SERNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field KOSTLV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_U_ASSET-KOSTLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_U_ASSET-KOSTLV.
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_ESH_U_ASSET_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
ANLKL TYPE STRING,
ANLAR TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
KTOGR TYPE STRING,
AKTIV TYPE STRING,
LIEFE TYPE STRING,
HERST TYPE STRING,
EAUFN TYPE STRING,
TYPBZ TYPE STRING,
INVZU TYPE STRING,
INVNR TYPE STRING,
TXT50 TYPE STRING,
SERNR TYPE STRING,
ANLHTXT TYPE STRING,
TXK20 TYPE STRING,
BUTXT TYPE STRING,
KOSTL TYPE STRING,
KTEXT TYPE STRING,
KTGRTX TYPE STRING,
STORT TYPE STRING,
KTEXT2 TYPE STRING,
GSBER TYPE STRING,
GTEXT TYPE STRING,
WERKS TYPE STRING,
LIFNR TYPE STRING,
PERNR TYPE STRING,
KFZKZ TYPE STRING,
BUDGET_PD TYPE STRING,
GEBER TYPE STRING,
FKBER TYPE STRING,
GRANT_NBR TYPE STRING,
TXA50 TYPE STRING,
PRCTR TYPE STRING,
NAME_TEXT1 TYPE STRING,
NAME_TEXT TYPE STRING,
KOKRS TYPE STRING,
CAUFN TYPE STRING,
KOSTLV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_U_ASSET_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_ESH_U_ASSET_STR-MANDT sy-vline 
WA_ESH_U_ASSET_STR-BUKRS sy-vline 
WA_ESH_U_ASSET_STR-ANLN1 sy-vline 
WA_ESH_U_ASSET_STR-ANLN2 sy-vline 
WA_ESH_U_ASSET_STR-ANLKL sy-vline 
WA_ESH_U_ASSET_STR-ANLAR sy-vline 
WA_ESH_U_ASSET_STR-ERNAM sy-vline 
WA_ESH_U_ASSET_STR-ERDAT sy-vline 
WA_ESH_U_ASSET_STR-AENAM sy-vline 
WA_ESH_U_ASSET_STR-AEDAT sy-vline 
WA_ESH_U_ASSET_STR-KTOGR sy-vline 
WA_ESH_U_ASSET_STR-AKTIV sy-vline 
WA_ESH_U_ASSET_STR-LIEFE sy-vline 
WA_ESH_U_ASSET_STR-HERST sy-vline 
WA_ESH_U_ASSET_STR-EAUFN sy-vline 
WA_ESH_U_ASSET_STR-TYPBZ sy-vline 
WA_ESH_U_ASSET_STR-INVZU sy-vline 
WA_ESH_U_ASSET_STR-INVNR sy-vline 
WA_ESH_U_ASSET_STR-TXT50 sy-vline 
WA_ESH_U_ASSET_STR-SERNR sy-vline 
WA_ESH_U_ASSET_STR-ANLHTXT sy-vline 
WA_ESH_U_ASSET_STR-TXK20 sy-vline 
WA_ESH_U_ASSET_STR-BUTXT sy-vline 
WA_ESH_U_ASSET_STR-KOSTL sy-vline 
WA_ESH_U_ASSET_STR-KTEXT sy-vline 
WA_ESH_U_ASSET_STR-KTGRTX sy-vline 
WA_ESH_U_ASSET_STR-STORT sy-vline 
WA_ESH_U_ASSET_STR-KTEXT2 sy-vline 
WA_ESH_U_ASSET_STR-GSBER sy-vline 
WA_ESH_U_ASSET_STR-GTEXT sy-vline 
WA_ESH_U_ASSET_STR-WERKS sy-vline 
WA_ESH_U_ASSET_STR-LIFNR sy-vline 
WA_ESH_U_ASSET_STR-PERNR sy-vline 
WA_ESH_U_ASSET_STR-KFZKZ sy-vline 
WA_ESH_U_ASSET_STR-BUDGET_PD sy-vline 
WA_ESH_U_ASSET_STR-GEBER sy-vline 
WA_ESH_U_ASSET_STR-FKBER sy-vline 
WA_ESH_U_ASSET_STR-GRANT_NBR sy-vline 
WA_ESH_U_ASSET_STR-TXA50 sy-vline 
WA_ESH_U_ASSET_STR-PRCTR sy-vline 
WA_ESH_U_ASSET_STR-NAME_TEXT1 sy-vline 
WA_ESH_U_ASSET_STR-NAME_TEXT sy-vline 
WA_ESH_U_ASSET_STR-KOKRS sy-vline 
WA_ESH_U_ASSET_STR-CAUFN sy-vline 
WA_ESH_U_ASSET_STR-KOSTLV sy-vline      INTO ld_text SEPARATED BY SPACE.

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