ABAP Select data from SAP table CMX_PII_W_METADATA into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP CMX_PII_W_METADATA 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_PII_W_METADATA. 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_PII_W_METADATA 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_PII_W_METADATA TYPE STANDARD TABLE OF CMX_PII_W_METADATA,
      WA_CMX_PII_W_METADATA TYPE CMX_PII_W_METADATA,
      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_PII_W_METADATA> TYPE CMX_PII_W_METADATA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMX_PII_W_METADATA
*  INTO TABLE @DATA(IT_CMX_PII_W_METADATA2).
*--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_PII_W_METADATA INDEX 1 INTO DATA(WA_CMX_PII_W_METADATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMX_PII_W_METADATA>-CRID_TMP = 1.
<CMX_PII_W_METADATA>-WERK = 1.
<CMX_PII_W_METADATA>-BID = 1.
<CMX_PII_W_METADATA>-PHSEQ = 1.
<CMX_PII_W_METADATA>-TSTKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMX_PII_W_METADATA-KTXT, sy-vline,
  WA_CMX_PII_W_METADATA-MATNR, sy-vline,
  WA_CMX_PII_W_METADATA-MATXT, sy-vline,
  WA_CMX_PII_W_METADATA-PRUEFLOS, sy-vline,
  WA_CMX_PII_W_METADATA-CHARG, sy-vline,
  WA_CMX_PII_W_METADATA-FSAVD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMX_PII_W_METADATA 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_PII_W_METADATA 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_PII_W_METADATA INTO WA_CMX_PII_W_METADATA.


*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_TMP
CALL FUNCTION 'CONVERSION_EXIT_NUMC1_OUTPUT'
  EXPORTING
    input =                      WA_CMX_PII_W_METADATA-CRID_TMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMX_PII_W_METADATA-CRID_TMP.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field PRUEFLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMX_PII_W_METADATA-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMX_PII_W_METADATA-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_PII_W_METADATA_STR, 
CRID_TMP TYPE STRING,
WERK TYPE STRING,
BID TYPE STRING,
PHSEQ TYPE STRING,
TSTKZ TYPE STRING,
KTXT TYPE STRING,
MATNR TYPE STRING,
MATXT TYPE STRING,
PRUEFLOS TYPE STRING,
CHARG TYPE STRING,
FSAVD TYPE STRING,
FSAVZ TYPE STRING,
DECNTRL_PRC TYPE STRING,
XS_ID TYPE STRING,
META_VALUES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMX_PII_W_METADATA_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_PII_W_METADATA_STR-CRID_TMP sy-vline 
WA_CMX_PII_W_METADATA_STR-WERK sy-vline 
WA_CMX_PII_W_METADATA_STR-BID sy-vline 
WA_CMX_PII_W_METADATA_STR-PHSEQ sy-vline 
WA_CMX_PII_W_METADATA_STR-TSTKZ sy-vline 
WA_CMX_PII_W_METADATA_STR-KTXT sy-vline 
WA_CMX_PII_W_METADATA_STR-MATNR sy-vline 
WA_CMX_PII_W_METADATA_STR-MATXT sy-vline 
WA_CMX_PII_W_METADATA_STR-PRUEFLOS sy-vline 
WA_CMX_PII_W_METADATA_STR-CHARG sy-vline 
WA_CMX_PII_W_METADATA_STR-FSAVD sy-vline 
WA_CMX_PII_W_METADATA_STR-FSAVZ sy-vline 
WA_CMX_PII_W_METADATA_STR-DECNTRL_PRC sy-vline 
WA_CMX_PII_W_METADATA_STR-XS_ID sy-vline 
WA_CMX_PII_W_METADATA_STR-META_VALUES sy-vline      INTO ld_text SEPARATED BY SPACE.

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