ABAP Select data from SAP table DB6PMDLTR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB6PMDLTR 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 DB6PMDLTR. 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 DB6PMDLTR 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_DB6PMDLTR TYPE STANDARD TABLE OF DB6PMDLTR,
      WA_DB6PMDLTR TYPE DB6PMDLTR,
      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: <DB6PMDLTR> TYPE DB6PMDLTR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB6PMDLTR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB6PMDLTR
  INTO TABLE IT_DB6PMDLTR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB6PMDLTR
*  INTO TABLE @DATA(IT_DB6PMDLTR2).
*--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_DB6PMDLTR INDEX 1 INTO DATA(WA_DB6PMDLTR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB6PMDLTR ASSIGNING <DB6PMDLTR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB6PMDLTR>-PART_KEY = 1.
<DB6PMDLTR>-AGENT_ID = 1.
<DB6PMDLTR>-APPL_ID = 1.
<DB6PMDLTR>-APPL_ID_HOLD_LK = 1.
<DB6PMDLTR>-BLOCKING_CURSOR = 1.

ENDLOOP.

LOOP AT IT_DB6PMDLTR INTO WA_DB6PMDLTR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB6PMDLTR-CREATOR, sy-vline,
  WA_DB6PMDLTR-CURSOR_NAME, sy-vline,
  WA_DB6PMDLTR-DLK_ID, sy-vline,
  WA_DB6PMDLTR-LK_ATTRIBUTES, sy-vline,
  WA_DB6PMDLTR-LK_COUNT, sy-vline,
  WA_DB6PMDLTR-LK_CURRENT_MODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB6PMDLTR 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_DB6PMDLTR 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_DB6PMDLTR INTO WA_DB6PMDLTR.


*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_DB6PMDLTR_STR, 
PART_KEY TYPE STRING,
AGENT_ID TYPE STRING,
APPL_ID TYPE STRING,
APPL_ID_HOLD_LK TYPE STRING,
BLOCKING_CURSOR TYPE STRING,
CREATOR TYPE STRING,
CURSOR_NAME TYPE STRING,
DLK_ID TYPE STRING,
LK_ATTRIBUTES TYPE STRING,
LK_COUNT TYPE STRING,
LK_CURRENT_MODE TYPE STRING,
LK_ESCALATION TYPE STRING,
LK_HOLD_COUNT TYPE STRING,
LK_MODE TYPE STRING,
LK_MODE_REQUESTED TYPE STRING,
LK_NAME TYPE STRING,
LK_NODE TYPE STRING,
LK_OBJECT_NAME TYPE STRING,
LK_OBJECT_TYPE TYPE STRING,
LK_RELEASE_FLAGS TYPE STRING,
LK_WAIT_STARTTIME TYPE STRING,
LOCKS_HELD TYPE STRING,
LOCKS_IN_LIST TYPE STRING,
PARTICIPANT_NO TYPE STRING,
PARTICIPANT_NO_HOLD_LK TYPE STRING,
PART_NUM TYPE STRING,
SECTION_NUM TYPE STRING,
SEQ_NO TYPE STRING,
SEQ_NO_HOLD_LK TYPE STRING,
STARTTIME TYPE STRING,
STMT_OPERATION TYPE STRING,
STMT_TYPE TYPE STRING,
TAB_NAME TYPE STRING,
TAB_SCHEMA TYPE STRING,
TSP_NAME TYPE STRING,
STMT_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB6PMDLTR_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_DB6PMDLTR_STR-PART_KEY sy-vline 
WA_DB6PMDLTR_STR-AGENT_ID sy-vline 
WA_DB6PMDLTR_STR-APPL_ID sy-vline 
WA_DB6PMDLTR_STR-APPL_ID_HOLD_LK sy-vline 
WA_DB6PMDLTR_STR-BLOCKING_CURSOR sy-vline 
WA_DB6PMDLTR_STR-CREATOR sy-vline 
WA_DB6PMDLTR_STR-CURSOR_NAME sy-vline 
WA_DB6PMDLTR_STR-DLK_ID sy-vline 
WA_DB6PMDLTR_STR-LK_ATTRIBUTES sy-vline 
WA_DB6PMDLTR_STR-LK_COUNT sy-vline 
WA_DB6PMDLTR_STR-LK_CURRENT_MODE sy-vline 
WA_DB6PMDLTR_STR-LK_ESCALATION sy-vline 
WA_DB6PMDLTR_STR-LK_HOLD_COUNT sy-vline 
WA_DB6PMDLTR_STR-LK_MODE sy-vline 
WA_DB6PMDLTR_STR-LK_MODE_REQUESTED sy-vline 
WA_DB6PMDLTR_STR-LK_NAME sy-vline 
WA_DB6PMDLTR_STR-LK_NODE sy-vline 
WA_DB6PMDLTR_STR-LK_OBJECT_NAME sy-vline 
WA_DB6PMDLTR_STR-LK_OBJECT_TYPE sy-vline 
WA_DB6PMDLTR_STR-LK_RELEASE_FLAGS sy-vline 
WA_DB6PMDLTR_STR-LK_WAIT_STARTTIME sy-vline 
WA_DB6PMDLTR_STR-LOCKS_HELD sy-vline 
WA_DB6PMDLTR_STR-LOCKS_IN_LIST sy-vline 
WA_DB6PMDLTR_STR-PARTICIPANT_NO sy-vline 
WA_DB6PMDLTR_STR-PARTICIPANT_NO_HOLD_LK sy-vline 
WA_DB6PMDLTR_STR-PART_NUM sy-vline 
WA_DB6PMDLTR_STR-SECTION_NUM sy-vline 
WA_DB6PMDLTR_STR-SEQ_NO sy-vline 
WA_DB6PMDLTR_STR-SEQ_NO_HOLD_LK sy-vline 
WA_DB6PMDLTR_STR-STARTTIME sy-vline 
WA_DB6PMDLTR_STR-STMT_OPERATION sy-vline 
WA_DB6PMDLTR_STR-STMT_TYPE sy-vline 
WA_DB6PMDLTR_STR-TAB_NAME sy-vline 
WA_DB6PMDLTR_STR-TAB_SCHEMA sy-vline 
WA_DB6PMDLTR_STR-TSP_NAME sy-vline 
WA_DB6PMDLTR_STR-STMT_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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