ABAP Select data from SAP table RCOCHP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCOCHP
*  INTO TABLE @DATA(IT_RCOCHP2).
*--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_RCOCHP INDEX 1 INTO DATA(WA_RCOCHP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCOCHP>-MANDT = 1.
<RCOCHP>-CRID = 1.
<RCOCHP>-WERK = 1.
<RCOCHP>-BID = 1.
<RCOCHP>-PHSEQ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCOCHP-ADRES, sy-vline,
  WA_RCOCHP-COTYP, sy-vline,
  WA_RCOCHP-TSTKZ, sy-vline,
  WA_RCOCHP-CRSTAT, sy-vline,
  WA_RCOCHP-ANDAT, sy-vline,
  WA_RCOCHP-ANUZT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCOCHP 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_RCOCHP 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_RCOCHP INTO WA_RCOCHP.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RCOCHP-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOCHP-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field VIS_VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RCOCHP-VIS_VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOCHP-VIS_VORNR.
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_RCOCHP_STR, 
MANDT TYPE STRING,
CRID TYPE STRING,
WERK TYPE STRING,
BID TYPE STRING,
PHSEQ TYPE STRING,
ADRES TYPE STRING,
COTYP TYPE STRING,
TSTKZ TYPE STRING,
CRSTAT TYPE STRING,
ANDAT TYPE STRING,
ANUZT TYPE STRING,
AEDAT TYPE STRING,
COM_NAME TYPE STRING,
S_STARO TYPE STRING,
S_STACO TYPE STRING,
S_CPAGE TYPE STRING,
KTXT TYPE STRING,
MATNR TYPE STRING,
MATXT TYPE STRING,
PRUEFLOS TYPE STRING,
VIS_VORNR TYPE STRING,
SELFLAG TYPE STRING,
UKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCOCHP_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_RCOCHP_STR-MANDT sy-vline 
WA_RCOCHP_STR-CRID sy-vline 
WA_RCOCHP_STR-WERK sy-vline 
WA_RCOCHP_STR-BID sy-vline 
WA_RCOCHP_STR-PHSEQ sy-vline 
WA_RCOCHP_STR-ADRES sy-vline 
WA_RCOCHP_STR-COTYP sy-vline 
WA_RCOCHP_STR-TSTKZ sy-vline 
WA_RCOCHP_STR-CRSTAT sy-vline 
WA_RCOCHP_STR-ANDAT sy-vline 
WA_RCOCHP_STR-ANUZT sy-vline 
WA_RCOCHP_STR-AEDAT sy-vline 
WA_RCOCHP_STR-COM_NAME sy-vline 
WA_RCOCHP_STR-S_STARO sy-vline 
WA_RCOCHP_STR-S_STACO sy-vline 
WA_RCOCHP_STR-S_CPAGE sy-vline 
WA_RCOCHP_STR-KTXT sy-vline 
WA_RCOCHP_STR-MATNR sy-vline 
WA_RCOCHP_STR-MATXT sy-vline 
WA_RCOCHP_STR-PRUEFLOS sy-vline 
WA_RCOCHP_STR-VIS_VORNR sy-vline 
WA_RCOCHP_STR-SELFLAG sy-vline 
WA_RCOCHP_STR-UKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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