ABAP Select data from SAP table EHSWAS_ENTAMSEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHSWAS_ENTAMSEL
*  INTO TABLE @DATA(IT_EHSWAS_ENTAMSEL2).
*--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_EHSWAS_ENTAMSEL INDEX 1 INTO DATA(WA_EHSWAS_ENTAMSEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHSWAS_ENTAMSEL>-MARKFLG = 1.
<EHSWAS_ENTAMSEL>-SELEFLG = 1.
<EHSWAS_ENTAMSEL>-LINENO = 1.
<EHSWAS_ENTAMSEL>-LINEMOD = 1.
<EHSWAS_ENTAMSEL>-CHCOFLG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHSWAS_ENTAMSEL-LOCKMOD, sy-vline,
  WA_EHSWAS_ENTAMSEL-INTRFLG, sy-vline,
  WA_EHSWAS_ENTAMSEL-VDATUM, sy-vline,
  WA_EHSWAS_ENTAMSEL-BDATUM, sy-vline,
  WA_EHSWAS_ENTAMSEL-BPGEN, sy-vline,
  WA_EHSWAS_ENTAMSEL-BPDIS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHSWAS_ENTAMSEL 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_EHSWAS_ENTAMSEL 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_EHSWAS_ENTAMSEL INTO WA_EHSWAS_ENTAMSEL.


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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS_ENTAMSEL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_ENTAMSEL-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field BPWANO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EHSWAS_ENTAMSEL-BPWANO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHSWAS_ENTAMSEL-BPWANO.
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_EHSWAS_ENTAMSEL_STR, 
MARKFLG TYPE STRING,
SELEFLG TYPE STRING,
LINENO TYPE STRING,
LINEMOD TYPE STRING,
CHCOFLG TYPE STRING,
LOCKMOD TYPE STRING,
INTRFLG TYPE STRING,
VDATUM TYPE STRING,
BDATUM TYPE STRING,
BPGEN TYPE STRING,
BPDIS TYPE STRING,
BPTRANS TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
MATNR TYPE STRING,
STATUS TYPE STRING,
ENTAMNO TYPE STRING,
BUTTON TYPE STRING,
RECN TYPE STRING,
STATIN TYPE STRING,
STATEX TYPE STRING,
STAT_AB TYPE STRING,
STAT_SELID TYPE STRING,
STAT_BL TYPE STRING,
BPWANO TYPE STRING,
CRNAM TYPE STRING,
EADISP TYPE STRING,
STORNAM TYPE STRING,
LGNUM TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
CLTFLD1 TYPE STRING,
CLTFLD2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHSWAS_ENTAMSEL_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_EHSWAS_ENTAMSEL_STR-MARKFLG sy-vline 
WA_EHSWAS_ENTAMSEL_STR-SELEFLG sy-vline 
WA_EHSWAS_ENTAMSEL_STR-LINENO sy-vline 
WA_EHSWAS_ENTAMSEL_STR-LINEMOD sy-vline 
WA_EHSWAS_ENTAMSEL_STR-CHCOFLG sy-vline 
WA_EHSWAS_ENTAMSEL_STR-LOCKMOD sy-vline 
WA_EHSWAS_ENTAMSEL_STR-INTRFLG sy-vline 
WA_EHSWAS_ENTAMSEL_STR-VDATUM sy-vline 
WA_EHSWAS_ENTAMSEL_STR-BDATUM sy-vline 
WA_EHSWAS_ENTAMSEL_STR-BPGEN sy-vline 
WA_EHSWAS_ENTAMSEL_STR-BPDIS sy-vline 
WA_EHSWAS_ENTAMSEL_STR-BPTRANS sy-vline 
WA_EHSWAS_ENTAMSEL_STR-WERKS sy-vline 
WA_EHSWAS_ENTAMSEL_STR-LGORT sy-vline 
WA_EHSWAS_ENTAMSEL_STR-MATNR sy-vline 
WA_EHSWAS_ENTAMSEL_STR-STATUS sy-vline 
WA_EHSWAS_ENTAMSEL_STR-ENTAMNO sy-vline 
WA_EHSWAS_ENTAMSEL_STR-BUTTON sy-vline 
WA_EHSWAS_ENTAMSEL_STR-RECN sy-vline 
WA_EHSWAS_ENTAMSEL_STR-STATIN sy-vline 
WA_EHSWAS_ENTAMSEL_STR-STATEX sy-vline 
WA_EHSWAS_ENTAMSEL_STR-STAT_AB sy-vline 
WA_EHSWAS_ENTAMSEL_STR-STAT_SELID sy-vline 
WA_EHSWAS_ENTAMSEL_STR-STAT_BL sy-vline 
WA_EHSWAS_ENTAMSEL_STR-BPWANO sy-vline 
WA_EHSWAS_ENTAMSEL_STR-CRNAM sy-vline 
WA_EHSWAS_ENTAMSEL_STR-EADISP sy-vline 
WA_EHSWAS_ENTAMSEL_STR-STORNAM sy-vline 
WA_EHSWAS_ENTAMSEL_STR-LGNUM sy-vline 
WA_EHSWAS_ENTAMSEL_STR-LGTYP sy-vline 
WA_EHSWAS_ENTAMSEL_STR-LGPLA sy-vline 
WA_EHSWAS_ENTAMSEL_STR-CLTFLD1 sy-vline 
WA_EHSWAS_ENTAMSEL_STR-CLTFLD2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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