ABAP Select data from SAP table CKML_MGV_ANALYSIS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKML_MGV_ANALYSIS
*  INTO TABLE @DATA(IT_CKML_MGV_ANALYSIS2).
*--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_CKML_MGV_ANALYSIS INDEX 1 INTO DATA(WA_CKML_MGV_ANALYSIS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKML_MGV_ANALYSIS>-SELKZ = 1.
<CKML_MGV_ANALYSIS>-MATNR = 1.
<CKML_MGV_ANALYSIS>-BWKEY = 1.
<CKML_MGV_ANALYSIS>-BWTAR = 1.
<CKML_MGV_ANALYSIS>-BELNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKML_MGV_ANALYSIS-POSNR, sy-vline,
  WA_CKML_MGV_ANALYSIS-MISS_PROC, sy-vline,
  WA_CKML_MGV_ANALYSIS-MISS_BVALT, sy-vline,
  WA_CKML_MGV_ANALYSIS-WRONG_PROC, sy-vline,
  WA_CKML_MGV_ANALYSIS-ADD_BVALT, sy-vline,
  WA_CKML_MGV_ANALYSIS-NO_MM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKML_MGV_ANALYSIS 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_CKML_MGV_ANALYSIS 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_CKML_MGV_ANALYSIS INTO WA_CKML_MGV_ANALYSIS.


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

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

*Conversion exit ALPHA, internal->external for field DOC1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKML_MGV_ANALYSIS-DOC1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_MGV_ANALYSIS-DOC1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOC2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKML_MGV_ANALYSIS-DOC2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_MGV_ANALYSIS-DOC2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOC3
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKML_MGV_ANALYSIS-DOC3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKML_MGV_ANALYSIS-DOC3.
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_CKML_MGV_ANALYSIS_STR, 
SELKZ TYPE STRING,
MATNR TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
BELNR TYPE STRING,
POSNR TYPE STRING,
MISS_PROC TYPE STRING,
MISS_BVALT TYPE STRING,
WRONG_PROC TYPE STRING,
ADD_BVALT TYPE STRING,
NO_MM TYPE STRING,
DIFF_PROC TYPE STRING,
DIFF_BVALT TYPE STRING,
MORE TYPE STRING,
S_ELSE TYPE STRING,
R_PROCESS TYPE STRING,
W_PROCESS TYPE STRING,
NEW_PROC TYPE STRING,
PROC_BLANK TYPE STRING,
R_BVALT TYPE STRING,
W_BVALT TYPE STRING,
NEW_BVALT TYPE STRING,
BVALT_BLANK TYPE STRING,
DOC1 TYPE STRING,
POS1 TYPE STRING,
DOC2 TYPE STRING,
POS2 TYPE STRING,
DOC3 TYPE STRING,
POS3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKML_MGV_ANALYSIS_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_CKML_MGV_ANALYSIS_STR-SELKZ sy-vline 
WA_CKML_MGV_ANALYSIS_STR-MATNR sy-vline 
WA_CKML_MGV_ANALYSIS_STR-BWKEY sy-vline 
WA_CKML_MGV_ANALYSIS_STR-BWTAR sy-vline 
WA_CKML_MGV_ANALYSIS_STR-BELNR sy-vline 
WA_CKML_MGV_ANALYSIS_STR-POSNR sy-vline 
WA_CKML_MGV_ANALYSIS_STR-MISS_PROC sy-vline 
WA_CKML_MGV_ANALYSIS_STR-MISS_BVALT sy-vline 
WA_CKML_MGV_ANALYSIS_STR-WRONG_PROC sy-vline 
WA_CKML_MGV_ANALYSIS_STR-ADD_BVALT sy-vline 
WA_CKML_MGV_ANALYSIS_STR-NO_MM sy-vline 
WA_CKML_MGV_ANALYSIS_STR-DIFF_PROC sy-vline 
WA_CKML_MGV_ANALYSIS_STR-DIFF_BVALT sy-vline 
WA_CKML_MGV_ANALYSIS_STR-MORE sy-vline 
WA_CKML_MGV_ANALYSIS_STR-S_ELSE sy-vline 
WA_CKML_MGV_ANALYSIS_STR-R_PROCESS sy-vline 
WA_CKML_MGV_ANALYSIS_STR-W_PROCESS sy-vline 
WA_CKML_MGV_ANALYSIS_STR-NEW_PROC sy-vline 
WA_CKML_MGV_ANALYSIS_STR-PROC_BLANK sy-vline 
WA_CKML_MGV_ANALYSIS_STR-R_BVALT sy-vline 
WA_CKML_MGV_ANALYSIS_STR-W_BVALT sy-vline 
WA_CKML_MGV_ANALYSIS_STR-NEW_BVALT sy-vline 
WA_CKML_MGV_ANALYSIS_STR-BVALT_BLANK sy-vline 
WA_CKML_MGV_ANALYSIS_STR-DOC1 sy-vline 
WA_CKML_MGV_ANALYSIS_STR-POS1 sy-vline 
WA_CKML_MGV_ANALYSIS_STR-DOC2 sy-vline 
WA_CKML_MGV_ANALYSIS_STR-POS2 sy-vline 
WA_CKML_MGV_ANALYSIS_STR-DOC3 sy-vline 
WA_CKML_MGV_ANALYSIS_STR-POS3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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