ABAP Select data from SAP table CMX_CR_S_INSTRUCTION_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMX_CR_S_INSTRUCTION_DATA
*  INTO TABLE @DATA(IT_CMX_CR_S_INSTRUCTION_DATA2).
*--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_CMX_CR_S_INSTRUCTION_DATA INDEX 1 INTO DATA(WA_CMX_CR_S_INSTRUCTION_DATA2).


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

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

ENDLOOP.

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

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


*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 NUMC1, internal->external for field CRID
CALL FUNCTION 'CONVERSION_EXIT_NUMC1_OUTPUT'
  EXPORTING
    input =                      WA_CMX_CR_S_INSTRUCTION_DATA-CRID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMX_CR_S_INSTRUCTION_DATA-CRID.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field PRUEFLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMX_CR_S_INSTRUCTION_DATA-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMX_CR_S_INSTRUCTION_DATA-PRUEFLOS.
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_CMX_CR_S_INSTRUCTION_DATA_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,
KTXT TYPE STRING,
MATNR TYPE STRING,
MATXT TYPE STRING,
PRUEFLOS TYPE STRING,
ERRKZ TYPE STRING,
ARFCIPID TYPE STRING,
ARFCPID TYPE STRING,
ARFCTIME TYPE STRING,
ARFCTIDCNT TYPE STRING,
EXSTAT TYPE STRING,
CHARG TYPE STRING,
FSAVD TYPE STRING,
FSAVZ TYPE STRING,
DECNTRL_PRC TYPE STRING,
XS_ID TYPE STRING,
HTML_MODE TYPE STRING,
COL TYPE STRING,
STATUS TYPE STRING,
CHKBOX TYPE STRING,
AMPEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMX_CR_S_INSTRUCTION_DATA_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_CMX_CR_S_INSTRUCTION_DATA_STR-MANDT sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-CRID sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-WERK sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-BID sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-PHSEQ sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-ADRES sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-COTYP sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-TSTKZ sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-CRSTAT sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-ANDAT sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-ANUZT sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-AEDAT sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-KTXT sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-MATNR sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-MATXT sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-PRUEFLOS sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-ERRKZ sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-ARFCIPID sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-ARFCPID sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-ARFCTIME sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-ARFCTIDCNT sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-EXSTAT sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-CHARG sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-FSAVD sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-FSAVZ sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-DECNTRL_PRC sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-XS_ID sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-HTML_MODE sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-COL sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-STATUS sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-CHKBOX sy-vline 
WA_CMX_CR_S_INSTRUCTION_DATA_STR-AMPEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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