ABAP Select data from SAP table REAJ_PARAM_TASK_CEA_L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REAJ_PARAM_TASK_CEA_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 REAJ_PARAM_TASK_CEA_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 REAJ_PARAM_TASK_CEA_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_REAJ_PARAM_TASK_CEA_L TYPE STANDARD TABLE OF REAJ_PARAM_TASK_CEA_L,
      WA_REAJ_PARAM_TASK_CEA_L TYPE REAJ_PARAM_TASK_CEA_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: <REAJ_PARAM_TASK_CEA_L> TYPE REAJ_PARAM_TASK_CEA_L.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REAJ_PARAM_TASK_CEA_L
*  INTO TABLE @DATA(IT_REAJ_PARAM_TASK_CEA_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_REAJ_PARAM_TASK_CEA_L INDEX 1 INTO DATA(WA_REAJ_PARAM_TASK_CEA_L2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REAJ_PARAM_TASK_CEA_L>-ISADJMTASKSEL = 1.
<REAJ_PARAM_TASK_CEA_L>-ADJMTASKID = 1.
<REAJ_PARAM_TASK_CEA_L>-PRESTGSTATUS = 1.
<REAJ_PARAM_TASK_CEA_L>-XADJMTASK = 1.
<REAJ_PARAM_TASK_CEA_L>-ADJMTASKTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REAJ_PARAM_TASK_CEA_L-XADJMTASKTYPE, sy-vline,
  WA_REAJ_PARAM_TASK_CEA_L-ADJMRULE, sy-vline,
  WA_REAJ_PARAM_TASK_CEA_L-XADJMRULE, sy-vline,
  WA_REAJ_PARAM_TASK_CEA_L-SUPERADJMTASKID, sy-vline,
  WA_REAJ_PARAM_TASK_CEA_L-SUPERADJMRULE, sy-vline,
  WA_REAJ_PARAM_TASK_CEA_L-XSUPERADJMRULE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REAJ_PARAM_TASK_CEA_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_REAJ_PARAM_TASK_CEA_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_REAJ_PARAM_TASK_CEA_L INTO WA_REAJ_PARAM_TASK_CEA_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 ADJMTASKID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REAJ_PARAM_TASK_CEA_L-ADJMTASKID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REAJ_PARAM_TASK_CEA_L-ADJMTASKID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field SUPERADJMRULE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REAJ_PARAM_TASK_CEA_L-SUPERADJMRULE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REAJ_PARAM_TASK_CEA_L-SUPERADJMRULE.
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_REAJ_PARAM_TASK_CEA_L_STR, 
ISADJMTASKSEL TYPE STRING,
ADJMTASKID TYPE STRING,
PRESTGSTATUS TYPE STRING,
XADJMTASK TYPE STRING,
ADJMTASKTYPE TYPE STRING,
XADJMTASKTYPE TYPE STRING,
ADJMRULE TYPE STRING,
XADJMRULE TYPE STRING,
SUPERADJMTASKID TYPE STRING,
SUPERADJMRULE TYPE STRING,
XSUPERADJMRULE TYPE STRING,
SORTORDER TYPE STRING,
COLORTAB TYPE STRING,
STYLETAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REAJ_PARAM_TASK_CEA_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_REAJ_PARAM_TASK_CEA_L_STR-ISADJMTASKSEL sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-ADJMTASKID sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-PRESTGSTATUS sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-XADJMTASK sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-ADJMTASKTYPE sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-XADJMTASKTYPE sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-ADJMRULE sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-XADJMRULE sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-SUPERADJMTASKID sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-SUPERADJMRULE sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-XSUPERADJMRULE sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-SORTORDER sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-COLORTAB sy-vline 
WA_REAJ_PARAM_TASK_CEA_L_STR-STYLETAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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