ABAP Select data from SAP table REAJC_RULE_TASK_X into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REAJC_RULE_TASK_X
*  INTO TABLE @DATA(IT_REAJC_RULE_TASK_X2).
*--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_REAJC_RULE_TASK_X INDEX 1 INTO DATA(WA_REAJC_RULE_TASK_X2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REAJC_RULE_TASK_X>-MANDT = 1.
<REAJC_RULE_TASK_X>-ADJMRULE = 1.
<REAJC_RULE_TASK_X>-RULECHANGEABLE = 1.
<REAJC_RULE_TASK_X>-RULEEXPAND = 1.
<REAJC_RULE_TASK_X>-ADJMTASKTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REAJC_RULE_TASK_X-FADJMTASKTYPE, sy-vline,
  WA_REAJC_RULE_TASK_X-FSVARIANTAT, sy-vline,
  WA_REAJC_RULE_TASK_X-FFSVARIANTAT, sy-vline,
  WA_REAJC_RULE_TASK_X-PERCENTINCR, sy-vline,
  WA_REAJC_RULE_TASK_X-FPERCENTINCR, sy-vline,
  WA_REAJC_RULE_TASK_X-PERINCRMONTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REAJC_RULE_TASK_X 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_REAJC_RULE_TASK_X 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_REAJC_RULE_TASK_X INTO WA_REAJC_RULE_TASK_X.


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

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

*Conversion exit CUNIT, internal->external for field ATMEASUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REAJC_RULE_TASK_X-ATMEASUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REAJC_RULE_TASK_X-ATMEASUNIT.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field AMMULMEASUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REAJC_RULE_TASK_X-AMMULMEASUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REAJC_RULE_TASK_X-AMMULMEASUNIT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field USAGEGROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REAJC_RULE_TASK_X-USAGEGROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REAJC_RULE_TASK_X-USAGEGROUP.
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_REAJC_RULE_TASK_X_STR, 
MANDT TYPE STRING,
ADJMRULE TYPE STRING,
RULECHANGEABLE TYPE STRING,
RULEEXPAND TYPE STRING,
ADJMTASKTYPE TYPE STRING,
FADJMTASKTYPE TYPE STRING,
FSVARIANTAT TYPE STRING,
FFSVARIANTAT TYPE STRING,
PERCENTINCR TYPE STRING,
FPERCENTINCR TYPE STRING,
PERINCRMONTH TYPE STRING,
FPERINCRMONTH TYPE STRING,
ATMEAS TYPE STRING,
FATMEAS TYPE STRING,
ATMEASUNIT TYPE STRING,
FATMEASUNIT TYPE STRING,
RULECOMP TYPE STRING,
FRULECOMP TYPE STRING,
RULECOMPFACT TYPE STRING,
FRULECOMPFACT TYPE STRING,
CHECKRULEASS TYPE STRING,
FCHECKRULEASS TYPE STRING,
DOWAIVERCD TYPE STRING,
FDOWAIVERCD TYPE STRING,
CANBEMULTIASS TYPE STRING,
FCANBEMULTIASS TYPE STRING,
ASSIGNSUPERAT TYPE STRING,
FASSIGNSUPERAT TYPE STRING,
ASSIGNSUBAT TYPE STRING,
FASSIGNSUBAT TYPE STRING,
ALVVARIANTAT TYPE STRING,
FALVVARIANTAT TYPE STRING,
AFFCNIND TYPE STRING,
FAFFCNIND TYPE STRING,
CURRENCY TYPE STRING,
FCURRENCY TYPE STRING,
COSTSDIRECTLY TYPE STRING,
FCOSTSDIRECTLY TYPE STRING,
AMMULMEAS TYPE STRING,
FAMMULMEAS TYPE STRING,
AMMULMEASUNIT TYPE STRING,
FAMMULMEASUNIT TYPE STRING,
AMMULMARGIN TYPE STRING,
FAMMULMARGIN TYPE STRING,
RRLPERCENT TYPE STRING,
FRRLPERCENT TYPE STRING,
CDGRPREVENUE TYPE STRING,
FCDGRPREVENUE TYPE STRING,
ISCSTOBJINDEP TYPE STRING,
FISCSTOBJINDEP TYPE STRING,
USAGEGROUP TYPE STRING,
FUSAGEGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REAJC_RULE_TASK_X_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_REAJC_RULE_TASK_X_STR-MANDT sy-vline 
WA_REAJC_RULE_TASK_X_STR-ADJMRULE sy-vline 
WA_REAJC_RULE_TASK_X_STR-RULECHANGEABLE sy-vline 
WA_REAJC_RULE_TASK_X_STR-RULEEXPAND sy-vline 
WA_REAJC_RULE_TASK_X_STR-ADJMTASKTYPE sy-vline 
WA_REAJC_RULE_TASK_X_STR-FADJMTASKTYPE sy-vline 
WA_REAJC_RULE_TASK_X_STR-FSVARIANTAT sy-vline 
WA_REAJC_RULE_TASK_X_STR-FFSVARIANTAT sy-vline 
WA_REAJC_RULE_TASK_X_STR-PERCENTINCR sy-vline 
WA_REAJC_RULE_TASK_X_STR-FPERCENTINCR sy-vline 
WA_REAJC_RULE_TASK_X_STR-PERINCRMONTH sy-vline 
WA_REAJC_RULE_TASK_X_STR-FPERINCRMONTH sy-vline 
WA_REAJC_RULE_TASK_X_STR-ATMEAS sy-vline 
WA_REAJC_RULE_TASK_X_STR-FATMEAS sy-vline 
WA_REAJC_RULE_TASK_X_STR-ATMEASUNIT sy-vline 
WA_REAJC_RULE_TASK_X_STR-FATMEASUNIT sy-vline 
WA_REAJC_RULE_TASK_X_STR-RULECOMP sy-vline 
WA_REAJC_RULE_TASK_X_STR-FRULECOMP sy-vline 
WA_REAJC_RULE_TASK_X_STR-RULECOMPFACT sy-vline 
WA_REAJC_RULE_TASK_X_STR-FRULECOMPFACT sy-vline 
WA_REAJC_RULE_TASK_X_STR-CHECKRULEASS sy-vline 
WA_REAJC_RULE_TASK_X_STR-FCHECKRULEASS sy-vline 
WA_REAJC_RULE_TASK_X_STR-DOWAIVERCD sy-vline 
WA_REAJC_RULE_TASK_X_STR-FDOWAIVERCD sy-vline 
WA_REAJC_RULE_TASK_X_STR-CANBEMULTIASS sy-vline 
WA_REAJC_RULE_TASK_X_STR-FCANBEMULTIASS sy-vline 
WA_REAJC_RULE_TASK_X_STR-ASSIGNSUPERAT sy-vline 
WA_REAJC_RULE_TASK_X_STR-FASSIGNSUPERAT sy-vline 
WA_REAJC_RULE_TASK_X_STR-ASSIGNSUBAT sy-vline 
WA_REAJC_RULE_TASK_X_STR-FASSIGNSUBAT sy-vline 
WA_REAJC_RULE_TASK_X_STR-ALVVARIANTAT sy-vline 
WA_REAJC_RULE_TASK_X_STR-FALVVARIANTAT sy-vline 
WA_REAJC_RULE_TASK_X_STR-AFFCNIND sy-vline 
WA_REAJC_RULE_TASK_X_STR-FAFFCNIND sy-vline 
WA_REAJC_RULE_TASK_X_STR-CURRENCY sy-vline 
WA_REAJC_RULE_TASK_X_STR-FCURRENCY sy-vline 
WA_REAJC_RULE_TASK_X_STR-COSTSDIRECTLY sy-vline 
WA_REAJC_RULE_TASK_X_STR-FCOSTSDIRECTLY sy-vline 
WA_REAJC_RULE_TASK_X_STR-AMMULMEAS sy-vline 
WA_REAJC_RULE_TASK_X_STR-FAMMULMEAS sy-vline 
WA_REAJC_RULE_TASK_X_STR-AMMULMEASUNIT sy-vline 
WA_REAJC_RULE_TASK_X_STR-FAMMULMEASUNIT sy-vline 
WA_REAJC_RULE_TASK_X_STR-AMMULMARGIN sy-vline 
WA_REAJC_RULE_TASK_X_STR-FAMMULMARGIN sy-vline 
WA_REAJC_RULE_TASK_X_STR-RRLPERCENT sy-vline 
WA_REAJC_RULE_TASK_X_STR-FRRLPERCENT sy-vline 
WA_REAJC_RULE_TASK_X_STR-CDGRPREVENUE sy-vline 
WA_REAJC_RULE_TASK_X_STR-FCDGRPREVENUE sy-vline 
WA_REAJC_RULE_TASK_X_STR-ISCSTOBJINDEP sy-vline 
WA_REAJC_RULE_TASK_X_STR-FISCSTOBJINDEP sy-vline 
WA_REAJC_RULE_TASK_X_STR-USAGEGROUP sy-vline 
WA_REAJC_RULE_TASK_X_STR-FUSAGEGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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