ABAP Select data from SAP table ICL_BS_LAND_B into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_BS_LAND_B
*  INTO TABLE @DATA(IT_ICL_BS_LAND_B2).
*--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_ICL_BS_LAND_B INDEX 1 INTO DATA(WA_ICL_BS_LAND_B2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICL_BS_LAND_B>-CLIENT = 1.
<ICL_BS_LAND_B>-ACTIVE = 1.
<ICL_BS_LAND_B>-CCEVENT = 1.
<ICL_BS_LAND_B>-COUNTRY = 1.
<ICL_BS_LAND_B>-REGION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_BS_LAND_B-CITY, sy-vline,
  WA_ICL_BS_LAND_B-COUNTY, sy-vline,
  WA_ICL_BS_LAND_B-LANGU, sy-vline,
  WA_ICL_BS_LAND_B-LANG2, sy-vline,
  WA_ICL_BS_LAND_B-COUNTRYN, sy-vline,
  WA_ICL_BS_LAND_B-REGIONN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_BS_LAND_B 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_ICL_BS_LAND_B 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_ICL_BS_LAND_B INTO WA_ICL_BS_LAND_B.


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

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

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ICL_BS_LAND_B-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_BS_LAND_B-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANG2
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ICL_BS_LAND_B-LANG2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_BS_LAND_B-LANG2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field CHANGETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICL_BS_LAND_B-CHANGETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_BS_LAND_B-CHANGETIME.
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_ICL_BS_LAND_B_STR, 
CLIENT TYPE STRING,
ACTIVE TYPE STRING,
CCEVENT TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
CITY TYPE STRING,
COUNTY TYPE STRING,
LANGU TYPE STRING,
LANG2 TYPE STRING,
COUNTRYN TYPE STRING,
REGIONN TYPE STRING,
TYPE TYPE STRING,
CCTYPE TYPE STRING,
SUBTYPE TYPE STRING,
CCSBRTYPE TYPE STRING,
RANGEFROM TYPE STRING,
STATUS TYPE STRING,
CREATEDBY TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGETIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_BS_LAND_B_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_ICL_BS_LAND_B_STR-CLIENT sy-vline 
WA_ICL_BS_LAND_B_STR-ACTIVE sy-vline 
WA_ICL_BS_LAND_B_STR-CCEVENT sy-vline 
WA_ICL_BS_LAND_B_STR-COUNTRY sy-vline 
WA_ICL_BS_LAND_B_STR-REGION sy-vline 
WA_ICL_BS_LAND_B_STR-CITY sy-vline 
WA_ICL_BS_LAND_B_STR-COUNTY sy-vline 
WA_ICL_BS_LAND_B_STR-LANGU sy-vline 
WA_ICL_BS_LAND_B_STR-LANG2 sy-vline 
WA_ICL_BS_LAND_B_STR-COUNTRYN sy-vline 
WA_ICL_BS_LAND_B_STR-REGIONN sy-vline 
WA_ICL_BS_LAND_B_STR-TYPE sy-vline 
WA_ICL_BS_LAND_B_STR-CCTYPE sy-vline 
WA_ICL_BS_LAND_B_STR-SUBTYPE sy-vline 
WA_ICL_BS_LAND_B_STR-CCSBRTYPE sy-vline 
WA_ICL_BS_LAND_B_STR-RANGEFROM sy-vline 
WA_ICL_BS_LAND_B_STR-STATUS sy-vline 
WA_ICL_BS_LAND_B_STR-CREATEDBY sy-vline 
WA_ICL_BS_LAND_B_STR-CHANGEDBY sy-vline 
WA_ICL_BS_LAND_B_STR-CHANGETIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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