ABAP Select data from SAP table QMCA_S_QCERT_KEY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QMCA_S_QCERT_KEY
*  INTO TABLE @DATA(IT_QMCA_S_QCERT_KEY2).
*--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_QMCA_S_QCERT_KEY INDEX 1 INTO DATA(WA_QMCA_S_QCERT_KEY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QMCA_S_QCERT_KEY>-LANGUAGE = 1.
<QMCA_S_QCERT_KEY>-BATCH = 1.
<QMCA_S_QCERT_KEY>-DELIVERYDOCUMENT = 1.
<QMCA_S_QCERT_KEY>-DELIVERYDOCUMENTITEM = 1.
<QMCA_S_QCERT_KEY>-INSPECTIONLOT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QMCA_S_QCERT_KEY-MATERIAL, sy-vline,
  WA_QMCA_S_QCERT_KEY-PLANT, sy-vline,
  WA_QMCA_S_QCERT_KEY-QLTYCERTIFICATEPROFILE, sy-vline,
  WA_QMCA_S_QCERT_KEY-QLTYCERTPROFILEVERSION, sy-vline,
  WA_QMCA_S_QCERT_KEY-QUALITYCERTIFICATETYPE, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_QMCA_S_QCERT_KEY 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_QMCA_S_QCERT_KEY 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_QMCA_S_QCERT_KEY INTO WA_QMCA_S_QCERT_KEY.


*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 ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_QMCA_S_QCERT_KEY-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMCA_S_QCERT_KEY-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field QLTYCERTPROFILEVERSION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QMCA_S_QCERT_KEY-QLTYCERTPROFILEVERSION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QMCA_S_QCERT_KEY-QLTYCERTPROFILEVERSION.
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_QMCA_S_QCERT_KEY_STR, 
LANGUAGE TYPE STRING,
BATCH TYPE STRING,
DELIVERYDOCUMENT TYPE STRING,
DELIVERYDOCUMENTITEM TYPE STRING,
INSPECTIONLOT TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
QLTYCERTIFICATEPROFILE TYPE STRING,
QLTYCERTPROFILEVERSION TYPE STRING,
QUALITYCERTIFICATETYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QMCA_S_QCERT_KEY_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_QMCA_S_QCERT_KEY_STR-LANGUAGE sy-vline 
WA_QMCA_S_QCERT_KEY_STR-BATCH sy-vline 
WA_QMCA_S_QCERT_KEY_STR-DELIVERYDOCUMENT sy-vline 
WA_QMCA_S_QCERT_KEY_STR-DELIVERYDOCUMENTITEM sy-vline 
WA_QMCA_S_QCERT_KEY_STR-INSPECTIONLOT sy-vline 
WA_QMCA_S_QCERT_KEY_STR-MATERIAL sy-vline 
WA_QMCA_S_QCERT_KEY_STR-PLANT sy-vline 
WA_QMCA_S_QCERT_KEY_STR-QLTYCERTIFICATEPROFILE sy-vline 
WA_QMCA_S_QCERT_KEY_STR-QLTYCERTPROFILEVERSION sy-vline 
WA_QMCA_S_QCERT_KEY_STR-QUALITYCERTIFICATETYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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