ABAP Select data from SAP table V_ECMCT_RR_02 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_ECMCT_RR_02 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 V_ECMCT_RR_02. 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 V_ECMCT_RR_02 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_V_ECMCT_RR_02 TYPE STANDARD TABLE OF V_ECMCT_RR_02,
      WA_V_ECMCT_RR_02 TYPE V_ECMCT_RR_02,
      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: <V_ECMCT_RR_02> TYPE V_ECMCT_RR_02.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_ECMCT_RR_02.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_ECMCT_RR_02
  INTO TABLE IT_V_ECMCT_RR_02.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_ECMCT_RR_02
*  INTO TABLE @DATA(IT_V_ECMCT_RR_022).
*--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_V_ECMCT_RR_02 INDEX 1 INTO DATA(WA_V_ECMCT_RR_022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_ECMCT_RR_02 ASSIGNING <V_ECMCT_RR_02>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_ECMCT_RR_02>-RCLNT = 1.
<V_ECMCT_RR_02>-RLDNR = 1.
<V_ECMCT_RR_02>-RRCTY = 1.
<V_ECMCT_RR_02>-RVERS = 1.
<V_ECMCT_RR_02>-RYEAR = 1.

ENDLOOP.

LOOP AT IT_V_ECMCT_RR_02 INTO WA_V_ECMCT_RR_02.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_ECMCT_RR_02-PERID, sy-vline,
  WA_V_ECMCT_RR_02-RTCUR, sy-vline,
  WA_V_ECMCT_RR_02-RUNIT, sy-vline,
  WA_V_ECMCT_RR_02-RCOMP, sy-vline,
  WA_V_ECMCT_RR_02-RDIMEN, sy-vline,
  WA_V_ECMCT_RR_02-RBUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_ECMCT_RR_02 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_V_ECMCT_RR_02 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_V_ECMCT_RR_02 INTO WA_V_ECMCT_RR_02.


*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 RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-RLDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-RUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-RUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-RCOMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field RBUNIT
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-RBUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-RBUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BFIMC, internal->external for field RITEM
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-RITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-RITEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field RBUPTR
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-RBUPTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-RBUPTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field RCONGR
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-RCONGR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-RCONGR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field YRACQ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-YRACQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-YRACQ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field COICU
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-COICU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-COICU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field TSL_YTD
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-TSL_YTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-TSL_YTD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field HSL_YTD
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-HSL_YTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-HSL_YTD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field KSL_YTD
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_V_ECMCT_RR_02-KSL_YTD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_ECMCT_RR_02-KSL_YTD.
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_V_ECMCT_RR_02_STR, 
RCLNT TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
PERID TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
RCOMP TYPE STRING,
RDIMEN TYPE STRING,
RBUNIT TYPE STRING,
RITCLG TYPE STRING,
RITEM TYPE STRING,
RBUPTR TYPE STRING,
RCONGR TYPE STRING,
ROBUKRS TYPE STRING,
SITYP TYPE STRING,
SUBIT TYPE STRING,
PLEVL TYPE STRING,
RPFLG TYPE STRING,
RTFLG TYPE STRING,
DOCTY TYPE STRING,
YRACQ TYPE STRING,
PRACQ TYPE STRING,
COICU TYPE STRING,
TSL_YTD TYPE STRING,
HSL_YTD TYPE STRING,
KSL_YTD TYPE STRING,
MSL_YTD TYPE STRING,
TF164_RYEAR TYPE STRING,
TF184_RYEAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_ECMCT_RR_02_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_V_ECMCT_RR_02_STR-RCLNT sy-vline 
WA_V_ECMCT_RR_02_STR-RLDNR sy-vline 
WA_V_ECMCT_RR_02_STR-RRCTY sy-vline 
WA_V_ECMCT_RR_02_STR-RVERS sy-vline 
WA_V_ECMCT_RR_02_STR-RYEAR sy-vline 
WA_V_ECMCT_RR_02_STR-PERID sy-vline 
WA_V_ECMCT_RR_02_STR-RTCUR sy-vline 
WA_V_ECMCT_RR_02_STR-RUNIT sy-vline 
WA_V_ECMCT_RR_02_STR-RCOMP sy-vline 
WA_V_ECMCT_RR_02_STR-RDIMEN sy-vline 
WA_V_ECMCT_RR_02_STR-RBUNIT sy-vline 
WA_V_ECMCT_RR_02_STR-RITCLG sy-vline 
WA_V_ECMCT_RR_02_STR-RITEM sy-vline 
WA_V_ECMCT_RR_02_STR-RBUPTR sy-vline 
WA_V_ECMCT_RR_02_STR-RCONGR sy-vline 
WA_V_ECMCT_RR_02_STR-ROBUKRS sy-vline 
WA_V_ECMCT_RR_02_STR-SITYP sy-vline 
WA_V_ECMCT_RR_02_STR-SUBIT sy-vline 
WA_V_ECMCT_RR_02_STR-PLEVL sy-vline 
WA_V_ECMCT_RR_02_STR-RPFLG sy-vline 
WA_V_ECMCT_RR_02_STR-RTFLG sy-vline 
WA_V_ECMCT_RR_02_STR-DOCTY sy-vline 
WA_V_ECMCT_RR_02_STR-YRACQ sy-vline 
WA_V_ECMCT_RR_02_STR-PRACQ sy-vline 
WA_V_ECMCT_RR_02_STR-COICU sy-vline 
WA_V_ECMCT_RR_02_STR-TSL_YTD sy-vline 
WA_V_ECMCT_RR_02_STR-HSL_YTD sy-vline 
WA_V_ECMCT_RR_02_STR-KSL_YTD sy-vline 
WA_V_ECMCT_RR_02_STR-MSL_YTD sy-vline 
WA_V_ECMCT_RR_02_STR-TF164_RYEAR sy-vline 
WA_V_ECMCT_RR_02_STR-TF184_RYEAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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