ABAP Select data from SAP table COCHP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COCHP
*  INTO TABLE @DATA(IT_COCHP2).
*--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_COCHP INDEX 1 INTO DATA(WA_COCHP2).


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

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

ENDLOOP.

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

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


*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_COCHP-BID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COCHP-BID.
WRITE:/ 'New Value:', ld_input.

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

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

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

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