ABAP Select data from SAP table LLGTK_INFO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LLGTK_INFO
*  INTO TABLE @DATA(IT_LLGTK_INFO2).
*--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_LLGTK_INFO INDEX 1 INTO DATA(WA_LLGTK_INFO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LLGTK_INFO>-LOCAT = 1.
<LLGTK_INFO>-WRKER = 1.
<LLGTK_INFO>-TASKI = 1.
<LLGTK_INFO>-TKSTS = 1.
<LLGTK_INFO>-ACTIV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LLGTK_INFO-ACTXT, sy-vline,
  WA_LLGTK_INFO-DVICE, sy-vline,
  WA_LLGTK_INFO-PDRTN, sy-vline,
  WA_LLGTK_INFO-ADRTN, sy-vline,
  WA_LLGTK_INFO-RSTYP, sy-vline,
  WA_LLGTK_INFO-VELHZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LLGTK_INFO 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_LLGTK_INFO 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_LLGTK_INFO INTO WA_LLGTK_INFO.


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

*Conversion exit TSTRM, internal->external for field RTSTMP
CALL FUNCTION 'CONVERSION_EXIT_TSTRM_OUTPUT'
  EXPORTING
    input =                      WA_LLGTK_INFO-RTSTMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LLGTK_INFO-RTSTMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRM, internal->external for field TTSTMP
CALL FUNCTION 'CONVERSION_EXIT_TSTRM_OUTPUT'
  EXPORTING
    input =                      WA_LLGTK_INFO-TTSTMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LLGTK_INFO-TTSTMP.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field ALTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_LLGTK_INFO-ALTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LLGTK_INFO-ALTME.
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_LLGTK_INFO_STR, 
LOCAT TYPE STRING,
WRKER TYPE STRING,
TASKI TYPE STRING,
TKSTS TYPE STRING,
ACTIV TYPE STRING,
ACTXT TYPE STRING,
DVICE TYPE STRING,
PDRTN TYPE STRING,
ADRTN TYPE STRING,
RSTYP TYPE STRING,
VELHZ TYPE STRING,
RTSTMP TYPE STRING,
TTSTMP TYPE STRING,
RZONESRC TYPE STRING,
BINCXSRC TYPE STRING,
BINCYSRC TYPE STRING,
BINCZSRC TYPE STRING,
RNODESRC TYPE STRING,
RZONEDST TYPE STRING,
BINCXDST TYPE STRING,
BINCYDST TYPE STRING,
BINCZDST TYPE STRING,
RNODEDST TYPE STRING,
HUNUMSRC TYPE STRING,
HUTYPSRC TYPE STRING,
HUNUMDST TYPE STRING,
HUTYPDST TYPE STRING,
TKTYP TYPE STRING,
GRTYP TYPE STRING,
GRPRF TYPE STRING,
MATNR TYPE STRING,
VSOLA TYPE STRING,
NISTA TYPE STRING,
ALTME TYPE STRING,
TANUM TYPE STRING,
TAPOS TYPE STRING,
VLTYP TYPE STRING,
VLBER TYPE STRING,
VLPLA TYPE STRING,
NLTYP TYPE STRING,
NLBER TYPE STRING,
NLPLA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LLGTK_INFO_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_LLGTK_INFO_STR-LOCAT sy-vline 
WA_LLGTK_INFO_STR-WRKER sy-vline 
WA_LLGTK_INFO_STR-TASKI sy-vline 
WA_LLGTK_INFO_STR-TKSTS sy-vline 
WA_LLGTK_INFO_STR-ACTIV sy-vline 
WA_LLGTK_INFO_STR-ACTXT sy-vline 
WA_LLGTK_INFO_STR-DVICE sy-vline 
WA_LLGTK_INFO_STR-PDRTN sy-vline 
WA_LLGTK_INFO_STR-ADRTN sy-vline 
WA_LLGTK_INFO_STR-RSTYP sy-vline 
WA_LLGTK_INFO_STR-VELHZ sy-vline 
WA_LLGTK_INFO_STR-RTSTMP sy-vline 
WA_LLGTK_INFO_STR-TTSTMP sy-vline 
WA_LLGTK_INFO_STR-RZONESRC sy-vline 
WA_LLGTK_INFO_STR-BINCXSRC sy-vline 
WA_LLGTK_INFO_STR-BINCYSRC sy-vline 
WA_LLGTK_INFO_STR-BINCZSRC sy-vline 
WA_LLGTK_INFO_STR-RNODESRC sy-vline 
WA_LLGTK_INFO_STR-RZONEDST sy-vline 
WA_LLGTK_INFO_STR-BINCXDST sy-vline 
WA_LLGTK_INFO_STR-BINCYDST sy-vline 
WA_LLGTK_INFO_STR-BINCZDST sy-vline 
WA_LLGTK_INFO_STR-RNODEDST sy-vline 
WA_LLGTK_INFO_STR-HUNUMSRC sy-vline 
WA_LLGTK_INFO_STR-HUTYPSRC sy-vline 
WA_LLGTK_INFO_STR-HUNUMDST sy-vline 
WA_LLGTK_INFO_STR-HUTYPDST sy-vline 
WA_LLGTK_INFO_STR-TKTYP sy-vline 
WA_LLGTK_INFO_STR-GRTYP sy-vline 
WA_LLGTK_INFO_STR-GRPRF sy-vline 
WA_LLGTK_INFO_STR-MATNR sy-vline 
WA_LLGTK_INFO_STR-VSOLA sy-vline 
WA_LLGTK_INFO_STR-NISTA sy-vline 
WA_LLGTK_INFO_STR-ALTME sy-vline 
WA_LLGTK_INFO_STR-TANUM sy-vline 
WA_LLGTK_INFO_STR-TAPOS sy-vline 
WA_LLGTK_INFO_STR-VLTYP sy-vline 
WA_LLGTK_INFO_STR-VLBER sy-vline 
WA_LLGTK_INFO_STR-VLPLA sy-vline 
WA_LLGTK_INFO_STR-NLTYP sy-vline 
WA_LLGTK_INFO_STR-NLBER sy-vline 
WA_LLGTK_INFO_STR-NLPLA sy-vline      INTO ld_text SEPARATED BY SPACE.

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