ABAP Select data from SAP table DB6PMSM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB6PMSM 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 DB6PMSM. 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 DB6PMSM 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_DB6PMSM TYPE STANDARD TABLE OF DB6PMSM,
      WA_DB6PMSM TYPE DB6PMSM,
      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: <DB6PMSM> TYPE DB6PMSM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB6PMSM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB6PMSM
  INTO TABLE IT_DB6PMSM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB6PMSM
*  INTO TABLE @DATA(IT_DB6PMSM2).
*--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_DB6PMSM INDEX 1 INTO DATA(WA_DB6PMSM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB6PMSM ASSIGNING <DB6PMSM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB6PMSM>-COMPTIME = 1.
<DB6PMSM>-PARTITN = 1.
<DB6PMSM>-CALLERFLAG = 1.
<DB6PMSM>-DBMSTRTTME = 1.
<DB6PMSM>-PRGVERS = 1.

ENDLOOP.

LOOP AT IT_DB6PMSM INTO WA_DB6PMSM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB6PMSM-SRT_HP_ALO, sy-vline,
  WA_DB6PMSM-PT_THSORTS, sy-vline,
  WA_DB6PMSM-PPD_SRT_RQ, sy-vline,
  WA_DB6PMSM-PPD_SRT_AC, sy-vline,
  WA_DB6PMSM-DB2_STRTTM, sy-vline,
  WA_DB6PMSM-LAST_RESET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB6PMSM 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_DB6PMSM 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_DB6PMSM INTO WA_DB6PMSM.


*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_DB6PMSM_STR, 
COMPTIME TYPE STRING,
PARTITN TYPE STRING,
CALLERFLAG TYPE STRING,
DBMSTRTTME TYPE STRING,
PRGVERS TYPE STRING,
SRT_HP_ALO TYPE STRING,
PT_THSORTS TYPE STRING,
PPD_SRT_RQ TYPE STRING,
PPD_SRT_AC TYPE STRING,
DB2_STRTTM TYPE STRING,
LAST_RESET TYPE STRING,
REM_CN_IN TYPE STRING,
REM_CN_INE TYPE STRING,
LOCAL_CONS TYPE STRING,
LOCL_CN_IE TYPE STRING,
CN_LC_DBS TYPE STRING,
AGT_REG TYPE STRING,
AGT_WAI_TK TYPE STRING,
UOW_SW TYPE STRING,
UOW_SWSTM TYPE STRING,
STMT_SW TYPE STRING,
STMT_SWSTM TYPE STRING,
TAB_SW TYPE STRING,
TAB_SWSTM TYPE STRING,
BP_SW TYPE STRING,
BP_SWSTM TYPE STRING,
LCK_SW TYPE STRING,
LCK_SW_STM TYPE STRING,
SRT_SW TYPE STRING,
SRT_SWSTM TYPE STRING,
DB2_STATUS TYPE STRING,
AGT_REG_TP TYPE STRING,
AGT_WAI_TP TYPE STRING,
COMM_PIMEM TYPE STRING,
IDEL_AG TYPE STRING,
AGT_FR_PO TYPE STRING,
AGT_CR_EPO TYPE STRING,
CRD_AG_TOP TYPE STRING,
MX_AG_OF TYPE STRING,
AGT_STOLEN TYPE STRING,
NUM_SCDBMS TYPE STRING,
PROD_NAME TYPE STRING,
COMPO_ID TYPE STRING,
SVC_LEVEL TYPE STRING,
GW_TIT_CN TYPE STRING,
GW_CUR_CN TYPE STRING,
GW_CN_W_HT TYPE STRING,
GW_CN_W_CL TYPE STRING,
PT_THHAJN TYPE STRING,
NUM_GW_CONN_SW TYPE STRING,
NUM_NODES_INST TYPE STRING,
SORT_HEAP_TOP TYPE STRING,
TM_SW TYPE STRING,
TM_SWSTM TYPE STRING,
POST_THRESHOLD_OLAP_FUNCS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB6PMSM_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_DB6PMSM_STR-COMPTIME sy-vline 
WA_DB6PMSM_STR-PARTITN sy-vline 
WA_DB6PMSM_STR-CALLERFLAG sy-vline 
WA_DB6PMSM_STR-DBMSTRTTME sy-vline 
WA_DB6PMSM_STR-PRGVERS sy-vline 
WA_DB6PMSM_STR-SRT_HP_ALO sy-vline 
WA_DB6PMSM_STR-PT_THSORTS sy-vline 
WA_DB6PMSM_STR-PPD_SRT_RQ sy-vline 
WA_DB6PMSM_STR-PPD_SRT_AC sy-vline 
WA_DB6PMSM_STR-DB2_STRTTM sy-vline 
WA_DB6PMSM_STR-LAST_RESET sy-vline 
WA_DB6PMSM_STR-REM_CN_IN sy-vline 
WA_DB6PMSM_STR-REM_CN_INE sy-vline 
WA_DB6PMSM_STR-LOCAL_CONS sy-vline 
WA_DB6PMSM_STR-LOCL_CN_IE sy-vline 
WA_DB6PMSM_STR-CN_LC_DBS sy-vline 
WA_DB6PMSM_STR-AGT_REG sy-vline 
WA_DB6PMSM_STR-AGT_WAI_TK sy-vline 
WA_DB6PMSM_STR-UOW_SW sy-vline 
WA_DB6PMSM_STR-UOW_SWSTM sy-vline 
WA_DB6PMSM_STR-STMT_SW sy-vline 
WA_DB6PMSM_STR-STMT_SWSTM sy-vline 
WA_DB6PMSM_STR-TAB_SW sy-vline 
WA_DB6PMSM_STR-TAB_SWSTM sy-vline 
WA_DB6PMSM_STR-BP_SW sy-vline 
WA_DB6PMSM_STR-BP_SWSTM sy-vline 
WA_DB6PMSM_STR-LCK_SW sy-vline 
WA_DB6PMSM_STR-LCK_SW_STM sy-vline 
WA_DB6PMSM_STR-SRT_SW sy-vline 
WA_DB6PMSM_STR-SRT_SWSTM sy-vline 
WA_DB6PMSM_STR-DB2_STATUS sy-vline 
WA_DB6PMSM_STR-AGT_REG_TP sy-vline 
WA_DB6PMSM_STR-AGT_WAI_TP sy-vline 
WA_DB6PMSM_STR-COMM_PIMEM sy-vline 
WA_DB6PMSM_STR-IDEL_AG sy-vline 
WA_DB6PMSM_STR-AGT_FR_PO sy-vline 
WA_DB6PMSM_STR-AGT_CR_EPO sy-vline 
WA_DB6PMSM_STR-CRD_AG_TOP sy-vline 
WA_DB6PMSM_STR-MX_AG_OF sy-vline 
WA_DB6PMSM_STR-AGT_STOLEN sy-vline 
WA_DB6PMSM_STR-NUM_SCDBMS sy-vline 
WA_DB6PMSM_STR-PROD_NAME sy-vline 
WA_DB6PMSM_STR-COMPO_ID sy-vline 
WA_DB6PMSM_STR-SVC_LEVEL sy-vline 
WA_DB6PMSM_STR-GW_TIT_CN sy-vline 
WA_DB6PMSM_STR-GW_CUR_CN sy-vline 
WA_DB6PMSM_STR-GW_CN_W_HT sy-vline 
WA_DB6PMSM_STR-GW_CN_W_CL sy-vline 
WA_DB6PMSM_STR-PT_THHAJN sy-vline 
WA_DB6PMSM_STR-NUM_GW_CONN_SW sy-vline 
WA_DB6PMSM_STR-NUM_NODES_INST sy-vline 
WA_DB6PMSM_STR-SORT_HEAP_TOP sy-vline 
WA_DB6PMSM_STR-TM_SW sy-vline 
WA_DB6PMSM_STR-TM_SWSTM sy-vline 
WA_DB6PMSM_STR-POST_THRESHOLD_OLAP_FUNCS sy-vline      INTO ld_text SEPARATED BY SPACE.

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