ABAP Select data from SAP table CLGLDOCLOWTCH into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CLGLDOCLOWTCH
*  INTO TABLE @DATA(IT_CLGLDOCLOWTCH2).
*--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_CLGLDOCLOWTCH INDEX 1 INTO DATA(WA_CLGLDOCLOWTCH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CLGLDOCLOWTCH>-MANDT = 1.
<CLGLDOCLOWTCH>-LGLCNTNTMDOCUMENTUUID = 1.
<CLGLDOCLOWTCH>-LGLCNTNTMDOCUMENT = 1.
<CLGLDOCLOWTCH>-DOCUMENTDESCRIPTION = 1.
<CLGLDOCLOWTCH>-LEGALTRANSACTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CLGLDOCLOWTCH-LEGALTRANSACTIONTITLE, sy-vline,
  WA_CLGLDOCLOWTCH-LEGALTRANSACTIONUUID, sy-vline,
  WA_CLGLDOCLOWTCH-LGLCNTNTMDOCASSEMBLYSTATUS, sy-vline,
  WA_CLGLDOCLOWTCH-LGLCNTNTMDOCASSEMBLYSTATUSTEXT, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_CLGLDOCLOWTCH 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_CLGLDOCLOWTCH 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_CLGLDOCLOWTCH INTO WA_CLGLDOCLOWTCH.


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

*Conversion exit ALPHA, internal->external for field LEGALTRANSACTION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CLGLDOCLOWTCH-LEGALTRANSACTION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CLGLDOCLOWTCH-LEGALTRANSACTION.
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_CLGLDOCLOWTCH_STR, 
MANDT TYPE STRING,
LGLCNTNTMDOCUMENTUUID TYPE STRING,
LGLCNTNTMDOCUMENT TYPE STRING,
DOCUMENTDESCRIPTION TYPE STRING,
LEGALTRANSACTION TYPE STRING,
LEGALTRANSACTIONTITLE TYPE STRING,
LEGALTRANSACTIONUUID TYPE STRING,
LGLCNTNTMDOCASSEMBLYSTATUS TYPE STRING,
LGLCNTNTMDOCASSEMBLYSTATUSTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CLGLDOCLOWTCH_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_CLGLDOCLOWTCH_STR-MANDT sy-vline 
WA_CLGLDOCLOWTCH_STR-LGLCNTNTMDOCUMENTUUID sy-vline 
WA_CLGLDOCLOWTCH_STR-LGLCNTNTMDOCUMENT sy-vline 
WA_CLGLDOCLOWTCH_STR-DOCUMENTDESCRIPTION sy-vline 
WA_CLGLDOCLOWTCH_STR-LEGALTRANSACTION sy-vline 
WA_CLGLDOCLOWTCH_STR-LEGALTRANSACTIONTITLE sy-vline 
WA_CLGLDOCLOWTCH_STR-LEGALTRANSACTIONUUID sy-vline 
WA_CLGLDOCLOWTCH_STR-LGLCNTNTMDOCASSEMBLYSTATUS sy-vline 
WA_CLGLDOCLOWTCH_STR-LGLCNTNTMDOCASSEMBLYSTATUSTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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