ABAP Select data from SAP table CATS_TIMELEVELING into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CATS_TIMELEVELING
*  INTO TABLE @DATA(IT_CATS_TIMELEVELING2).
*--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_CATS_TIMELEVELING INDEX 1 INTO DATA(WA_CATS_TIMELEVELING2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CATS_TIMELEVELING>-PERNR = 1.
<CATS_TIMELEVELING>-DATEFROM = 1.
<CATS_TIMELEVELING>-DATETO = 1.
<CATS_TIMELEVELING>-TARGET = 1.
<CATS_TIMELEVELING>-RECORDED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CATS_TIMELEVELING-CATSWEEKEX, sy-vline,
  WA_CATS_TIMELEVELING-ENAME, sy-vline,
  WA_CATS_TIMELEVELING-WERKS, sy-vline,
  WA_CATS_TIMELEVELING-BTRTL, sy-vline,
  WA_CATS_TIMELEVELING-PERSG, sy-vline,
  WA_CATS_TIMELEVELING-PERSK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CATS_TIMELEVELING 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_CATS_TIMELEVELING 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_CATS_TIMELEVELING INTO WA_CATS_TIMELEVELING.


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

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CATS_TIMELEVELING-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATS_TIMELEVELING-MEINH.
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_CATS_TIMELEVELING_STR, 
PERNR TYPE STRING,
DATEFROM TYPE STRING,
DATETO TYPE STRING,
TARGET TYPE STRING,
RECORDED TYPE STRING,
CATSWEEKEX TYPE STRING,
ENAME TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
SBMOD TYPE STRING,
SACHZ TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
ORGEH TYPE STRING,
PLANS TYPE STRING,
MEINH TYPE STRING,
DIFFERENZ TYPE STRING,
LIMIT_FLAG TYPE STRING,
DAY_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CATS_TIMELEVELING_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_CATS_TIMELEVELING_STR-PERNR sy-vline 
WA_CATS_TIMELEVELING_STR-DATEFROM sy-vline 
WA_CATS_TIMELEVELING_STR-DATETO sy-vline 
WA_CATS_TIMELEVELING_STR-TARGET sy-vline 
WA_CATS_TIMELEVELING_STR-RECORDED sy-vline 
WA_CATS_TIMELEVELING_STR-CATSWEEKEX sy-vline 
WA_CATS_TIMELEVELING_STR-ENAME sy-vline 
WA_CATS_TIMELEVELING_STR-WERKS sy-vline 
WA_CATS_TIMELEVELING_STR-BTRTL sy-vline 
WA_CATS_TIMELEVELING_STR-PERSG sy-vline 
WA_CATS_TIMELEVELING_STR-PERSK sy-vline 
WA_CATS_TIMELEVELING_STR-SBMOD sy-vline 
WA_CATS_TIMELEVELING_STR-SACHZ sy-vline 
WA_CATS_TIMELEVELING_STR-KOKRS sy-vline 
WA_CATS_TIMELEVELING_STR-KOSTL sy-vline 
WA_CATS_TIMELEVELING_STR-ORGEH sy-vline 
WA_CATS_TIMELEVELING_STR-PLANS sy-vline 
WA_CATS_TIMELEVELING_STR-MEINH sy-vline 
WA_CATS_TIMELEVELING_STR-DIFFERENZ sy-vline 
WA_CATS_TIMELEVELING_STR-LIMIT_FLAG sy-vline 
WA_CATS_TIMELEVELING_STR-DAY_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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