ABAP Select data from SAP table REAJC_RULE_MINMAXINC 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_MINMAXINC 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_MINMAXINC. 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_MINMAXINC 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_MINMAXINC TYPE STANDARD TABLE OF REAJC_RULE_MINMAXINC,
      WA_REAJC_RULE_MINMAXINC TYPE REAJC_RULE_MINMAXINC,
      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_MINMAXINC> TYPE REAJC_RULE_MINMAXINC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REAJC_RULE_MINMAXINC
*  INTO TABLE @DATA(IT_REAJC_RULE_MINMAXINC2).
*--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_MINMAXINC INDEX 1 INTO DATA(WA_REAJC_RULE_MINMAXINC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REAJC_RULE_MINMAXINC>-MANDT = 1.
<REAJC_RULE_MINMAXINC>-ADJMRULE = 1.
<REAJC_RULE_MINMAXINC>-ADJMREASON = 1.
<REAJC_RULE_MINMAXINC>-PERIODMONTH = 1.
<REAJC_RULE_MINMAXINC>-MAXINCREL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REAJC_RULE_MINMAXINC-MAXINCABS, sy-vline,
  WA_REAJC_RULE_MINMAXINC-MAXINCCOND, sy-vline,
  WA_REAJC_RULE_MINMAXINC-MININCREL, sy-vline,
  WA_REAJC_RULE_MINMAXINC-MININCABS, sy-vline,
  WA_REAJC_RULE_MINMAXINC-MININCCOND, sy-vline,
  WA_REAJC_RULE_MINMAXINC-MAXMINMEAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REAJC_RULE_MINMAXINC 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_MINMAXINC 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_MINMAXINC INTO WA_REAJC_RULE_MINMAXINC.


*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_MINMAXINC-ADJMRULE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REAJC_RULE_MINMAXINC-ADJMRULE.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field MAXMINUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REAJC_RULE_MINMAXINC-MAXMINUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REAJC_RULE_MINMAXINC-MAXMINUNIT.
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_MINMAXINC_STR, 
MANDT TYPE STRING,
ADJMRULE TYPE STRING,
ADJMREASON TYPE STRING,
PERIODMONTH TYPE STRING,
MAXINCREL TYPE STRING,
MAXINCABS TYPE STRING,
MAXINCCOND TYPE STRING,
MININCREL TYPE STRING,
MININCABS TYPE STRING,
MININCCOND TYPE STRING,
MAXMINMEAS TYPE STRING,
TAKEMININC TYPE STRING,
MINMAXCURR TYPE STRING,
MAXMINUNIT TYPE STRING,
MINMAXBASE TYPE STRING,
BOUNDLOWCOND TYPE STRING,
BOUNDLOWMEAS TYPE STRING,
BOUNDUPCOND TYPE STRING,
BOUNDUPMEAS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REAJC_RULE_MINMAXINC_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_MINMAXINC_STR-MANDT sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-ADJMRULE sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-ADJMREASON sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-PERIODMONTH sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-MAXINCREL sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-MAXINCABS sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-MAXINCCOND sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-MININCREL sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-MININCABS sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-MININCCOND sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-MAXMINMEAS sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-TAKEMININC sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-MINMAXCURR sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-MAXMINUNIT sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-MINMAXBASE sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-BOUNDLOWCOND sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-BOUNDLOWMEAS sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-BOUNDUPCOND sy-vline 
WA_REAJC_RULE_MINMAXINC_STR-BOUNDUPMEAS sy-vline      INTO ld_text SEPARATED BY SPACE.

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