ABAP Select data from SAP table RECEC_CERULE_X into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RECEC_CERULE_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 RECEC_CERULE_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 RECEC_CERULE_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_RECEC_CERULE_X TYPE STANDARD TABLE OF RECEC_CERULE_X,
      WA_RECEC_CERULE_X TYPE RECEC_CERULE_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: <RECEC_CERULE_X> TYPE RECEC_CERULE_X.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECEC_CERULE_X
*  INTO TABLE @DATA(IT_RECEC_CERULE_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_RECEC_CERULE_X INDEX 1 INTO DATA(WA_RECEC_CERULE_X2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECEC_CERULE_X>-MANDT = 1.
<RECEC_CERULE_X>-CERULE = 1.
<RECEC_CERULE_X>-ACCPRINCIPLE = 1.
<RECEC_CERULE_X>-CETYPE = 1.
<RECEC_CERULE_X>-CETYPEAUTOEVAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECEC_CERULE_X-CETYPEAUTOCOMPLETE, sy-vline,
  WA_RECEC_CERULE_X-CDGROUP, sy-vline,
  WA_RECEC_CERULE_X-STRAIGHTLINETYPE, sy-vline,
  WA_RECEC_CERULE_X-FLOWTYPESTRAIGHTLINING, sy-vline,
  WA_RECEC_CERULE_X-FLOWTYPESTRAIGHTLINING_NE, sy-vline,
  WA_RECEC_CERULE_X-CESLTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECEC_CERULE_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_RECEC_CERULE_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_RECEC_CERULE_X INTO WA_RECEC_CERULE_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 FLOWTYPESTRAIGHTLINING
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RECEC_CERULE_X-FLOWTYPESTRAIGHTLINING
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECEC_CERULE_X-FLOWTYPESTRAIGHTLINING.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RECEC_CERULE_X-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECEC_CERULE_X-SPRAS.
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_RECEC_CERULE_X_STR, 
MANDT TYPE STRING,
CERULE TYPE STRING,
ACCPRINCIPLE TYPE STRING,
CETYPE TYPE STRING,
CETYPEAUTOEVAL TYPE STRING,
CETYPEAUTOCOMPLETE TYPE STRING,
CDGROUP TYPE STRING,
STRAIGHTLINETYPE TYPE STRING,
FLOWTYPESTRAIGHTLINING TYPE STRING,
FLOWTYPESTRAIGHTLINING_NE TYPE STRING,
CESLTYPE TYPE STRING,
CEISSLREST TYPE STRING,
FLOWTYPEINTEREST TYPE STRING,
FLOWTYPEPAYMENT TYPE STRING,
FLOWTYPEREPAYMENT TYPE STRING,
FLOWTYPEACQUISITION TYPE STRING,
FLOWTYPEDEPRECIATION TYPE STRING,
INTEGRATIONTYPE TYPE STRING,
CUEXCLUDEASSIGN TYPE STRING,
ISINFORMATIONALRULE TYPE STRING,
INTERESTCALCMETHOD TYPE STRING,
SPRAS TYPE STRING,
XCERULE TYPE STRING,
XCERULETITLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECEC_CERULE_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_RECEC_CERULE_X_STR-MANDT sy-vline 
WA_RECEC_CERULE_X_STR-CERULE sy-vline 
WA_RECEC_CERULE_X_STR-ACCPRINCIPLE sy-vline 
WA_RECEC_CERULE_X_STR-CETYPE sy-vline 
WA_RECEC_CERULE_X_STR-CETYPEAUTOEVAL sy-vline 
WA_RECEC_CERULE_X_STR-CETYPEAUTOCOMPLETE sy-vline 
WA_RECEC_CERULE_X_STR-CDGROUP sy-vline 
WA_RECEC_CERULE_X_STR-STRAIGHTLINETYPE sy-vline 
WA_RECEC_CERULE_X_STR-FLOWTYPESTRAIGHTLINING sy-vline 
WA_RECEC_CERULE_X_STR-FLOWTYPESTRAIGHTLINING_NE sy-vline 
WA_RECEC_CERULE_X_STR-CESLTYPE sy-vline 
WA_RECEC_CERULE_X_STR-CEISSLREST sy-vline 
WA_RECEC_CERULE_X_STR-FLOWTYPEINTEREST sy-vline 
WA_RECEC_CERULE_X_STR-FLOWTYPEPAYMENT sy-vline 
WA_RECEC_CERULE_X_STR-FLOWTYPEREPAYMENT sy-vline 
WA_RECEC_CERULE_X_STR-FLOWTYPEACQUISITION sy-vline 
WA_RECEC_CERULE_X_STR-FLOWTYPEDEPRECIATION sy-vline 
WA_RECEC_CERULE_X_STR-INTEGRATIONTYPE sy-vline 
WA_RECEC_CERULE_X_STR-CUEXCLUDEASSIGN sy-vline 
WA_RECEC_CERULE_X_STR-ISINFORMATIONALRULE sy-vline 
WA_RECEC_CERULE_X_STR-INTERESTCALCMETHOD sy-vline 
WA_RECEC_CERULE_X_STR-SPRAS sy-vline 
WA_RECEC_CERULE_X_STR-XCERULE sy-vline 
WA_RECEC_CERULE_X_STR-XCERULETITLE sy-vline      INTO ld_text SEPARATED BY SPACE.

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