ABAP Select data from SAP table RESCSURHYTHM_L into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RESCSURHYTHM_L
*  INTO TABLE @DATA(IT_RESCSURHYTHM_L2).
*--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_RESCSURHYTHM_L INDEX 1 INTO DATA(WA_RESCSURHYTHM_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RESCSURHYTHM_L>-MANDT = 1.
<RESCSURHYTHM_L>-INTRENO = 1.
<RESCSURHYTHM_L>-VALIDFROM = 1.
<RESCSURHYTHM_L>-SETTLVARIANT = 1.
<RESCSURHYTHM_L>-RHYTMBEGIN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RESCSURHYTHM_L-FREQUENCY, sy-vline,
  WA_RESCSURHYTHM_L-FREQUENCYUNIT, sy-vline,
  WA_RESCSURHYTHM_L-FIXPER, sy-vline,
  WA_RESCSURHYTHM_L-BUKRS, sy-vline,
  WA_RESCSURHYTHM_L-SWENR, sy-vline,
  WA_RESCSURHYTHM_L-SNKSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RESCSURHYTHM_L 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_RESCSURHYTHM_L 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_RESCSURHYTHM_L INTO WA_RESCSURHYTHM_L.


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

*Conversion exit SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_RESCSURHYTHM_L-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESCSURHYTHM_L-SWENR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RESCSURHYTHM_L-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESCSURHYTHM_L-VALIDTO.
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_RESCSURHYTHM_L_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
VALIDFROM TYPE STRING,
SETTLVARIANT TYPE STRING,
RHYTMBEGIN TYPE STRING,
FREQUENCY TYPE STRING,
FREQUENCYUNIT TYPE STRING,
FIXPER TYPE STRING,
BUKRS TYPE STRING,
SWENR TYPE STRING,
SNKSL TYPE STRING,
SEMPSL TYPE STRING,
XTEXT TYPE STRING,
VALIDTO TYPE STRING,
ICON_DETAIL TYPE STRING,
CELLTAB TYPE STRING,
COLORTAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RESCSURHYTHM_L_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_RESCSURHYTHM_L_STR-MANDT sy-vline 
WA_RESCSURHYTHM_L_STR-INTRENO sy-vline 
WA_RESCSURHYTHM_L_STR-VALIDFROM sy-vline 
WA_RESCSURHYTHM_L_STR-SETTLVARIANT sy-vline 
WA_RESCSURHYTHM_L_STR-RHYTMBEGIN sy-vline 
WA_RESCSURHYTHM_L_STR-FREQUENCY sy-vline 
WA_RESCSURHYTHM_L_STR-FREQUENCYUNIT sy-vline 
WA_RESCSURHYTHM_L_STR-FIXPER sy-vline 
WA_RESCSURHYTHM_L_STR-BUKRS sy-vline 
WA_RESCSURHYTHM_L_STR-SWENR sy-vline 
WA_RESCSURHYTHM_L_STR-SNKSL sy-vline 
WA_RESCSURHYTHM_L_STR-SEMPSL sy-vline 
WA_RESCSURHYTHM_L_STR-XTEXT sy-vline 
WA_RESCSURHYTHM_L_STR-VALIDTO sy-vline 
WA_RESCSURHYTHM_L_STR-ICON_DETAIL sy-vline 
WA_RESCSURHYTHM_L_STR-CELLTAB sy-vline 
WA_RESCSURHYTHM_L_STR-COLORTAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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