ABAP Select data from SAP table EHPRCS_ESTCAT_LEGSTK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHPRCS_ESTCAT_LEGSTK
*  INTO TABLE @DATA(IT_EHPRCS_ESTCAT_LEGSTK2).
*--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_EHPRCS_ESTCAT_LEGSTK INDEX 1 INTO DATA(WA_EHPRCS_ESTCAT_LEGSTK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHPRCS_ESTCAT_LEGSTK>-ERRORMODE = 1.
<EHPRCS_ESTCAT_LEGSTK>-ERRORINFO = 1.
<EHPRCS_ESTCAT_LEGSTK>-ERRORCLASS = 1.
<EHPRCS_ESTCAT_LEGSTK>-ERRORPARAM = 1.
<EHPRCS_ESTCAT_LEGSTK>-LOGLOCKMOD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHPRCS_ESTCAT_LEGSTK-EXTINFO, sy-vline,
  WA_EHPRCS_ESTCAT_LEGSTK-LINEMOD, sy-vline,
  WA_EHPRCS_ESTCAT_LEGSTK-MANDT, sy-vline,
  WA_EHPRCS_ESTCAT_LEGSTK-RECN, sy-vline,
  WA_EHPRCS_ESTCAT_LEGSTK-ACTN, sy-vline,
  WA_EHPRCS_ESTCAT_LEGSTK-VALFR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHPRCS_ESTCAT_LEGSTK 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_EHPRCS_ESTCAT_LEGSTK 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_EHPRCS_ESTCAT_LEGSTK INTO WA_EHPRCS_ESTCAT_LEGSTK.


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

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

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

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

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

*Conversion exit BUPID, internal->external for field PROP_LEGSTK_PERSON
CALL FUNCTION 'CONVERSION_EXIT_BUPID_OUTPUT'
  EXPORTING
    input =                      WA_EHPRCS_ESTCAT_LEGSTK-PROP_LEGSTK_PERSON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHPRCS_ESTCAT_LEGSTK-PROP_LEGSTK_PERSON.
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_EHPRCS_ESTCAT_LEGSTK_STR, 
ERRORMODE TYPE STRING,
ERRORINFO TYPE STRING,
ERRORCLASS TYPE STRING,
ERRORPARAM TYPE STRING,
LOGLOCKMOD TYPE STRING,
EXTINFO TYPE STRING,
LINEMOD TYPE STRING,
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
PARKFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
SRSID TYPE STRING,
OWNID TYPE STRING,
RECNROOT TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGE_NR_DESC TYPE STRING,
PROP_LEGSTK_LEGENTITY TYPE STRING,
PROP_LEGSTK_ROLE TYPE STRING,
PROP_LEGSTK_SYSTEMUSER TYPE STRING,
PROP_LEGSTK_PERSON TYPE STRING,
PROP_LEGSTK_PERSON_NAME TYPE STRING,
PROP_LEGSTK_SUSER_NAME TYPE STRING,
EEW_SUB_LEGSTK_DT TYPE STRING,
REF_INH_CODE TYPE STRING,
EEW_SUB_LEGSTK_D TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHPRCS_ESTCAT_LEGSTK_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_EHPRCS_ESTCAT_LEGSTK_STR-ERRORMODE sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-ERRORINFO sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-ERRORCLASS sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-ERRORPARAM sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-LOGLOCKMOD sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-EXTINFO sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-LINEMOD sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-MANDT sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-RECN sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-ACTN sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-VALFR sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-VALTO sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-AENNR sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-DELFLG sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-PARKFLG sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-CRDAT sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-CRNAM sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-UPDDAT sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-UPDNAM sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-SRSID sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-OWNID sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-RECNROOT sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-CREATED_BY sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-CHANGED_BY sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-CHANGE_NR_DESC sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-PROP_LEGSTK_LEGENTITY sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-PROP_LEGSTK_ROLE sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-PROP_LEGSTK_SYSTEMUSER sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-PROP_LEGSTK_PERSON sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-PROP_LEGSTK_PERSON_NAME sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-PROP_LEGSTK_SUSER_NAME sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-EEW_SUB_LEGSTK_DT sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-REF_INH_CODE sy-vline 
WA_EHPRCS_ESTCAT_LEGSTK_STR-EEW_SUB_LEGSTK_D sy-vline      INTO ld_text SEPARATED BY SPACE.

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