ABAP Select data from SAP table DB6PMDLSH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB6PMDLSH 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 DB6PMDLSH. 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 DB6PMDLSH 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_DB6PMDLSH TYPE STANDARD TABLE OF DB6PMDLSH,
      WA_DB6PMDLSH TYPE DB6PMDLSH,
      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: <DB6PMDLSH> TYPE DB6PMDLSH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB6PMDLSH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB6PMDLSH
  INTO TABLE IT_DB6PMDLSH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB6PMDLSH
*  INTO TABLE @DATA(IT_DB6PMDLSH2).
*--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_DB6PMDLSH INDEX 1 INTO DATA(WA_DB6PMDLSH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB6PMDLSH ASSIGNING <DB6PMDLSH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB6PMDLSH>-COMP_ENV_DESC = 1.
<DB6PMDLSH>-CREATOR = 1.
<DB6PMDLSH>-DLK_ID = 1.
<DB6PMDLSH>-EVM_ACTIVE = 1.
<DB6PMDLSH>-PCKG_NAME = 1.

ENDLOOP.

LOOP AT IT_DB6PMDLSH INTO WA_DB6PMDLSH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB6PMDLSH-PCKG_VERS_ID, sy-vline,
  WA_DB6PMDLSH-PARTICIPANT_NO, sy-vline,
  WA_DB6PMDLSH-SECTION_NUM, sy-vline,
  WA_DB6PMDLSH-SEQ_NO, sy-vline,
  WA_DB6PMDLSH-STMT_FIRST_USE_TIME, sy-vline,
  WA_DB6PMDLSH-STMT_HISTORY_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB6PMDLSH 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_DB6PMDLSH 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_DB6PMDLSH INTO WA_DB6PMDLSH.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_DB6PMDLSH_STR, 
COMP_ENV_DESC TYPE STRING,
CREATOR TYPE STRING,
DLK_ID TYPE STRING,
EVM_ACTIVE TYPE STRING,
PCKG_NAME TYPE STRING,
PCKG_VERS_ID TYPE STRING,
PARTICIPANT_NO TYPE STRING,
SECTION_NUM TYPE STRING,
SEQ_NO TYPE STRING,
STMT_FIRST_USE_TIME TYPE STRING,
STMT_HISTORY_ID TYPE STRING,
STMT_INVOC_ID TYPE STRING,
STMT_ISOLATION TYPE STRING,
STMT_LAST_USE_TIME TYPE STRING,
STMT_LOCK_TIMEOUT TYPE STRING,
STMT_NEST_LEVEL TYPE STRING,
STMT_PKGCACHE_ID TYPE STRING,
STMT_QUERY_ID TYPE STRING,
STMT_SOURCE_ID TYPE STRING,
STMT_TYPE TYPE STRING,
STMT_TEXT TYPE STRING,
OPT_LEVEL TYPE STRING,
DEGREE TYPE STRING,
AGENT_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB6PMDLSH_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_DB6PMDLSH_STR-COMP_ENV_DESC sy-vline 
WA_DB6PMDLSH_STR-CREATOR sy-vline 
WA_DB6PMDLSH_STR-DLK_ID sy-vline 
WA_DB6PMDLSH_STR-EVM_ACTIVE sy-vline 
WA_DB6PMDLSH_STR-PCKG_NAME sy-vline 
WA_DB6PMDLSH_STR-PCKG_VERS_ID sy-vline 
WA_DB6PMDLSH_STR-PARTICIPANT_NO sy-vline 
WA_DB6PMDLSH_STR-SECTION_NUM sy-vline 
WA_DB6PMDLSH_STR-SEQ_NO sy-vline 
WA_DB6PMDLSH_STR-STMT_FIRST_USE_TIME sy-vline 
WA_DB6PMDLSH_STR-STMT_HISTORY_ID sy-vline 
WA_DB6PMDLSH_STR-STMT_INVOC_ID sy-vline 
WA_DB6PMDLSH_STR-STMT_ISOLATION sy-vline 
WA_DB6PMDLSH_STR-STMT_LAST_USE_TIME sy-vline 
WA_DB6PMDLSH_STR-STMT_LOCK_TIMEOUT sy-vline 
WA_DB6PMDLSH_STR-STMT_NEST_LEVEL sy-vline 
WA_DB6PMDLSH_STR-STMT_PKGCACHE_ID sy-vline 
WA_DB6PMDLSH_STR-STMT_QUERY_ID sy-vline 
WA_DB6PMDLSH_STR-STMT_SOURCE_ID sy-vline 
WA_DB6PMDLSH_STR-STMT_TYPE sy-vline 
WA_DB6PMDLSH_STR-STMT_TEXT sy-vline 
WA_DB6PMDLSH_STR-OPT_LEVEL sy-vline 
WA_DB6PMDLSH_STR-DEGREE sy-vline 
WA_DB6PMDLSH_STR-AGENT_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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