ABAP Select data from SAP table RESC_CNPART_DETAIL_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RESC_CNPART_DETAIL_ALV
*  INTO TABLE @DATA(IT_RESC_CNPART_DETAIL_ALV2).
*--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_RESC_CNPART_DETAIL_ALV INDEX 1 INTO DATA(WA_RESC_CNPART_DETAIL_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RESC_CNPART_DETAIL_ALV>-OBJGUID = 1.
<RESC_CNPART_DETAIL_ALV>-SCS_SU_GUID = 1.
<RESC_CNPART_DETAIL_ALV>-MANDT = 1.
<RESC_CNPART_DETAIL_ALV>-SU_OBJNR = 1.
<RESC_CNPART_DETAIL_ALV>-CN_OBJNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RESC_CNPART_DETAIL_ALV-RO_OBJNR, sy-vline,
  WA_RESC_CNPART_DETAIL_ALV-VALIDTO, sy-vline,
  WA_RESC_CNPART_DETAIL_ALV-VALIDFROM, sy-vline,
  WA_RESC_CNPART_DETAIL_ALV-PARTTYPE, sy-vline,
  WA_RESC_CNPART_DETAIL_ALV-PTENANT, sy-vline,
  WA_RESC_CNPART_DETAIL_ALV-CONDTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RESC_CNPART_DETAIL_ALV 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_RESC_CNPART_DETAIL_ALV 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_RESC_CNPART_DETAIL_ALV INTO WA_RESC_CNPART_DETAIL_ALV.


*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 REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RESC_CNPART_DETAIL_ALV-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESC_CNPART_DETAIL_ALV-VALIDTO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_RESC_CNPART_DETAIL_ALV-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESC_CNPART_DETAIL_ALV-SWENR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field SEMPSL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RESC_CNPART_DETAIL_ALV-SEMPSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESC_CNPART_DETAIL_ALV-SEMPSL.
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_RESC_CNPART_DETAIL_ALV_STR, 
OBJGUID TYPE STRING,
SCS_SU_GUID TYPE STRING,
MANDT TYPE STRING,
SU_OBJNR TYPE STRING,
CN_OBJNR TYPE STRING,
RO_OBJNR TYPE STRING,
VALIDTO TYPE STRING,
VALIDFROM TYPE STRING,
PARTTYPE TYPE STRING,
PTENANT TYPE STRING,
CONDTYPE TYPE STRING,
CONDGUID TYPE STRING,
CONDVALIDFROM TYPE STRING,
CURRENCY TYPE STRING,
MAXCOSTSU TYPE STRING,
BASE TYPE STRING,
BASEAMOUNT TYPE STRING,
BASEDATE TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
IS_USED_BY_SETTL TYPE STRING,
IS_CHANGEABLE TYPE STRING,
WAS_GENERATE TYPE STRING,
WAS_CHANGED TYPE STRING,
SETTL_GUID TYPE STRING,
BUKRS TYPE STRING,
SWENR TYPE STRING,
SNKSL TYPE STRING,
SEMPSL TYPE STRING,
XSCKEY TYPE STRING,
XSSCKEY TYPE STRING,
XSU TYPE STRING,
XTEXTCONDL TYPE STRING,
XTEXTCONDM TYPE STRING,
XPARTTYPE TYPE STRING,
XBASE TYPE STRING,
XGENERATEINFO TYPE STRING,
XPARTICIPTYPE TYPE STRING,
XSBASE TYPE STRING,
ICON_STATUS TYPE STRING,
ICON_DETAIL TYPE STRING,
CELLTAB TYPE STRING,
COLORTAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RESC_CNPART_DETAIL_ALV_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_RESC_CNPART_DETAIL_ALV_STR-OBJGUID sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-SCS_SU_GUID sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-MANDT sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-SU_OBJNR sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-CN_OBJNR sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-RO_OBJNR sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-VALIDTO sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-VALIDFROM sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-PARTTYPE sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-PTENANT sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-CONDTYPE sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-CONDGUID sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-CONDVALIDFROM sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-CURRENCY sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-MAXCOSTSU sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-BASE sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-BASEAMOUNT sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-BASEDATE sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-RERF sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-DERF sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-TERF sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-REHER sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-RBEAR sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-DBEAR sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-TBEAR sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-RBHER sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-IS_USED_BY_SETTL sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-IS_CHANGEABLE sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-WAS_GENERATE sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-WAS_CHANGED sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-SETTL_GUID sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-BUKRS sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-SWENR sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-SNKSL sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-SEMPSL sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-XSCKEY sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-XSSCKEY sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-XSU sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-XTEXTCONDL sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-XTEXTCONDM sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-XPARTTYPE sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-XBASE sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-XGENERATEINFO sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-XPARTICIPTYPE sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-XSBASE sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-ICON_STATUS sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-ICON_DETAIL sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-CELLTAB sy-vline 
WA_RESC_CNPART_DETAIL_ALV_STR-COLORTAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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