ABAP Select data from SAP table DB6PMCD_DB2 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB6PMCD_DB2 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 DB6PMCD_DB2. 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 DB6PMCD_DB2 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_DB6PMCD_DB2 TYPE STANDARD TABLE OF DB6PMCD_DB2,
      WA_DB6PMCD_DB2 TYPE DB6PMCD_DB2,
      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: <DB6PMCD_DB2> TYPE DB6PMCD_DB2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB6PMCD_DB2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB6PMCD_DB2
  INTO TABLE IT_DB6PMCD_DB2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB6PMCD_DB2
*  INTO TABLE @DATA(IT_DB6PMCD_DB22).
*--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_DB6PMCD_DB2 INDEX 1 INTO DATA(WA_DB6PMCD_DB22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB6PMCD_DB2 ASSIGNING <DB6PMCD_DB2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB6PMCD_DB2>-DBCONFIG_TYPE = 1.
<DB6PMCD_DB2>-AP_CTL_HP = 1.
<DB6PMCD_DB2>-APPLHEAPSZ = 1.
<DB6PMCD_DB2>-AUTORESTRT = 1.
<DB6PMCD_DB2>-AVG_APPLS = 1.

ENDLOOP.

LOOP AT IT_DB6PMCD_DB2 INTO WA_DB6PMCD_DB2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB6PMCD_DB2-BUFFPAGE, sy-vline,
  WA_DB6PMCD_DB2-CATCA_SZ, sy-vline,
  WA_DB6PMCD_DB2-CHGPGS_THR, sy-vline,
  WA_DB6PMCD_DB2-CPPROTECT, sy-vline,
  WA_DB6PMCD_DB2-DBHEAP, sy-vline,
  WA_DB6PMCD_DB2-DFT_DEGREE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB6PMCD_DB2 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_DB6PMCD_DB2 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_DB6PMCD_DB2 INTO WA_DB6PMCD_DB2.


*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_DB6PMCD_DB2_STR, 
DBCONFIG_TYPE TYPE STRING,
AP_CTL_HP TYPE STRING,
APPLHEAPSZ TYPE STRING,
AUTORESTRT TYPE STRING,
AVG_APPLS TYPE STRING,
BUFFPAGE TYPE STRING,
CATCA_SZ TYPE STRING,
CHGPGS_THR TYPE STRING,
CPPROTECT TYPE STRING,
DBHEAP TYPE STRING,
DFT_DEGREE TYPE STRING,
DFT_EXTSZ TYPE STRING,
DFT_LDRECS TYPE STRING,
DFT_PF_SZ TYPE STRING,
DFT_QOPT TYPE STRING,
DFT_REFAGE TYPE STRING,
DFT_SQLMW TYPE STRING,
DIR_OBJ_NM TYPE STRING,
DISCOVER TYPE STRING,
DL_EXPINT TYPE STRING,
DL_NIM_CPS TYPE STRING,
DL_TM_DROP TYPE STRING,
DL_TOKEN TYPE STRING,
DL_UPPER TYPE STRING,
DLCHKTIME TYPE STRING,
DYNQRYMGMT TYPE STRING,
ESTOR_SQSZ TYPE STRING,
INDEXREC TYPE STRING,
INDEXSORT TYPE STRING,
LCKLIST TYPE STRING,
LCKTMOUT TYPE STRING,
LOGBUFSZ TYPE STRING,
LOGFILSIZ TYPE STRING,
LOGPRIMARY TYPE STRING,
LOGRETAIN TYPE STRING,
LOGSECOND TYPE STRING,
MAXAPPLS TYPE STRING,
MAXFILOP TYPE STRING,
MAXLOCKS TYPE STRING,
MINCOMMIT TYPE STRING,
NEWLOGPATH TYPE STRING,
NUM_DBBKPS TYPE STRING,
NUM_EST_SG TYPE STRING,
NUM_FRQVAL TYPE STRING,
NUM_IOCLNS TYPE STRING,
NUM_IOSVRS TYPE STRING,
NUM_QUANT TYPE STRING,
PCKCACHESZ TYPE STRING,
REC_HIS_RT TYPE STRING,
SEQDETECT TYPE STRING,
SOFTMAX TYPE STRING,
SORTHEAP TYPE STRING,
STA_HP_SZ TYPE STRING,
STMTHEAP TYPE STRING,
TSM_MGMT TYPE STRING,
TSM_NODE TYPE STRING,
TSM_OWNER TYPE STRING,
TSM_PW TYPE STRING,
USEREXIT TYPE STRING,
UTIL_HP_SZ TYPE STRING,
BACKUP_PND TYPE STRING,
CODEPAGE TYPE STRING,
CODESET TYPE STRING,
COLLATESEQ TYPE STRING,
COUNTRY TYPE STRING,
DB_CONSIST TYPE STRING,
DB_LEVEL TYPE STRING,
LOG_RET_ST TYPE STRING,
LOGHEAD TYPE STRING,
LOGPATH TYPE STRING,
MULTPG_ALO TYPE STRING,
NUMSEGS TYPE STRING,
REL_LEVEL TYPE STRING,
REST_PEND TYPE STRING,
RFWD_PEND TYPE STRING,
TERRITORY TYPE STRING,
UEXIT_STAT TYPE STRING,
LOGINDEXBUILD TYPE STRING,
HADR_DB_ROLE TYPE STRING,
HADR_LOCAL_HOST TYPE STRING,
HADR_LOCAL_SVC TYPE STRING,
HADR_REMOTE_HOST TYPE STRING,
HADR_REMOTE_SVC TYPE STRING,
HADR_REMOTE_INST TYPE STRING,
HADR_TIMEOUT TYPE STRING,
HADR_SYNCMODE TYPE STRING,
STMT_HEAP TYPE STRING,
AUTO_SWITCHES TYPE STRING,
ARCHMETH1 TYPE STRING,
ARCHMETH2 TYPE STRING,
ARCHMETH1OPT TYPE STRING,
ARCHMETH2OPT TYPE STRING,
FAILOVERLOG TYPE STRING,
NUMARCHRETRY TYPE STRING,
ARCHRETRYDELAY TYPE STRING,
VENDOROPT TYPE STRING,
ALT_COLLATE TYPE STRING,
APG_MEM_SZ TYPE STRING,
BLK_LD_FUL TYPE STRING,
DB_MEMORY TYPE STRING,
DFT_MTTB_TYPES TYPE STRING,
DL_WT_IEXP TYPE STRING,
GRPHP_RAT TYPE STRING,
MAXLOG TYPE STRING,
MR_LOGPATH TYPE STRING,
NUMLOGSP TYPE STRING,
OV_LOGPATH TYPE STRING,
SHEAPTRES TYPE STRING,
TRACKMOD TYPE STRING,
AUTO_MAINT TYPE STRING,
AUTO_DB_BACKUP TYPE STRING,
AUTO_TBL_MAINT TYPE STRING,
AUTO_RUNSTATS TYPE STRING,
AUTO_STATS_PROF TYPE STRING,
AUTO_PROF_UPD TYPE STRING,
AUTO_REORG TYPE STRING,
PAGESIZE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB6PMCD_DB2_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_DB6PMCD_DB2_STR-DBCONFIG_TYPE sy-vline 
WA_DB6PMCD_DB2_STR-AP_CTL_HP sy-vline 
WA_DB6PMCD_DB2_STR-APPLHEAPSZ sy-vline 
WA_DB6PMCD_DB2_STR-AUTORESTRT sy-vline 
WA_DB6PMCD_DB2_STR-AVG_APPLS sy-vline 
WA_DB6PMCD_DB2_STR-BUFFPAGE sy-vline 
WA_DB6PMCD_DB2_STR-CATCA_SZ sy-vline 
WA_DB6PMCD_DB2_STR-CHGPGS_THR sy-vline 
WA_DB6PMCD_DB2_STR-CPPROTECT sy-vline 
WA_DB6PMCD_DB2_STR-DBHEAP sy-vline 
WA_DB6PMCD_DB2_STR-DFT_DEGREE sy-vline 
WA_DB6PMCD_DB2_STR-DFT_EXTSZ sy-vline 
WA_DB6PMCD_DB2_STR-DFT_LDRECS sy-vline 
WA_DB6PMCD_DB2_STR-DFT_PF_SZ sy-vline 
WA_DB6PMCD_DB2_STR-DFT_QOPT sy-vline 
WA_DB6PMCD_DB2_STR-DFT_REFAGE sy-vline 
WA_DB6PMCD_DB2_STR-DFT_SQLMW sy-vline 
WA_DB6PMCD_DB2_STR-DIR_OBJ_NM sy-vline 
WA_DB6PMCD_DB2_STR-DISCOVER sy-vline 
WA_DB6PMCD_DB2_STR-DL_EXPINT sy-vline 
WA_DB6PMCD_DB2_STR-DL_NIM_CPS sy-vline 
WA_DB6PMCD_DB2_STR-DL_TM_DROP sy-vline 
WA_DB6PMCD_DB2_STR-DL_TOKEN sy-vline 
WA_DB6PMCD_DB2_STR-DL_UPPER sy-vline 
WA_DB6PMCD_DB2_STR-DLCHKTIME sy-vline 
WA_DB6PMCD_DB2_STR-DYNQRYMGMT sy-vline 
WA_DB6PMCD_DB2_STR-ESTOR_SQSZ sy-vline 
WA_DB6PMCD_DB2_STR-INDEXREC sy-vline 
WA_DB6PMCD_DB2_STR-INDEXSORT sy-vline 
WA_DB6PMCD_DB2_STR-LCKLIST sy-vline 
WA_DB6PMCD_DB2_STR-LCKTMOUT sy-vline 
WA_DB6PMCD_DB2_STR-LOGBUFSZ sy-vline 
WA_DB6PMCD_DB2_STR-LOGFILSIZ sy-vline 
WA_DB6PMCD_DB2_STR-LOGPRIMARY sy-vline 
WA_DB6PMCD_DB2_STR-LOGRETAIN sy-vline 
WA_DB6PMCD_DB2_STR-LOGSECOND sy-vline 
WA_DB6PMCD_DB2_STR-MAXAPPLS sy-vline 
WA_DB6PMCD_DB2_STR-MAXFILOP sy-vline 
WA_DB6PMCD_DB2_STR-MAXLOCKS sy-vline 
WA_DB6PMCD_DB2_STR-MINCOMMIT sy-vline 
WA_DB6PMCD_DB2_STR-NEWLOGPATH sy-vline 
WA_DB6PMCD_DB2_STR-NUM_DBBKPS sy-vline 
WA_DB6PMCD_DB2_STR-NUM_EST_SG sy-vline 
WA_DB6PMCD_DB2_STR-NUM_FRQVAL sy-vline 
WA_DB6PMCD_DB2_STR-NUM_IOCLNS sy-vline 
WA_DB6PMCD_DB2_STR-NUM_IOSVRS sy-vline 
WA_DB6PMCD_DB2_STR-NUM_QUANT sy-vline 
WA_DB6PMCD_DB2_STR-PCKCACHESZ sy-vline 
WA_DB6PMCD_DB2_STR-REC_HIS_RT sy-vline 
WA_DB6PMCD_DB2_STR-SEQDETECT sy-vline 
WA_DB6PMCD_DB2_STR-SOFTMAX sy-vline 
WA_DB6PMCD_DB2_STR-SORTHEAP sy-vline 
WA_DB6PMCD_DB2_STR-STA_HP_SZ sy-vline 
WA_DB6PMCD_DB2_STR-STMTHEAP sy-vline 
WA_DB6PMCD_DB2_STR-TSM_MGMT sy-vline 
WA_DB6PMCD_DB2_STR-TSM_NODE sy-vline 
WA_DB6PMCD_DB2_STR-TSM_OWNER sy-vline 
WA_DB6PMCD_DB2_STR-TSM_PW sy-vline 
WA_DB6PMCD_DB2_STR-USEREXIT sy-vline 
WA_DB6PMCD_DB2_STR-UTIL_HP_SZ sy-vline 
WA_DB6PMCD_DB2_STR-BACKUP_PND sy-vline 
WA_DB6PMCD_DB2_STR-CODEPAGE sy-vline 
WA_DB6PMCD_DB2_STR-CODESET sy-vline 
WA_DB6PMCD_DB2_STR-COLLATESEQ sy-vline 
WA_DB6PMCD_DB2_STR-COUNTRY sy-vline 
WA_DB6PMCD_DB2_STR-DB_CONSIST sy-vline 
WA_DB6PMCD_DB2_STR-DB_LEVEL sy-vline 
WA_DB6PMCD_DB2_STR-LOG_RET_ST sy-vline 
WA_DB6PMCD_DB2_STR-LOGHEAD sy-vline 
WA_DB6PMCD_DB2_STR-LOGPATH sy-vline 
WA_DB6PMCD_DB2_STR-MULTPG_ALO sy-vline 
WA_DB6PMCD_DB2_STR-NUMSEGS sy-vline 
WA_DB6PMCD_DB2_STR-REL_LEVEL sy-vline 
WA_DB6PMCD_DB2_STR-REST_PEND sy-vline 
WA_DB6PMCD_DB2_STR-RFWD_PEND sy-vline 
WA_DB6PMCD_DB2_STR-TERRITORY sy-vline 
WA_DB6PMCD_DB2_STR-UEXIT_STAT sy-vline 
WA_DB6PMCD_DB2_STR-LOGINDEXBUILD sy-vline 
WA_DB6PMCD_DB2_STR-HADR_DB_ROLE sy-vline 
WA_DB6PMCD_DB2_STR-HADR_LOCAL_HOST sy-vline 
WA_DB6PMCD_DB2_STR-HADR_LOCAL_SVC sy-vline 
WA_DB6PMCD_DB2_STR-HADR_REMOTE_HOST sy-vline 
WA_DB6PMCD_DB2_STR-HADR_REMOTE_SVC sy-vline 
WA_DB6PMCD_DB2_STR-HADR_REMOTE_INST sy-vline 
WA_DB6PMCD_DB2_STR-HADR_TIMEOUT sy-vline 
WA_DB6PMCD_DB2_STR-HADR_SYNCMODE sy-vline 
WA_DB6PMCD_DB2_STR-STMT_HEAP sy-vline 
WA_DB6PMCD_DB2_STR-AUTO_SWITCHES sy-vline 
WA_DB6PMCD_DB2_STR-ARCHMETH1 sy-vline 
WA_DB6PMCD_DB2_STR-ARCHMETH2 sy-vline 
WA_DB6PMCD_DB2_STR-ARCHMETH1OPT sy-vline 
WA_DB6PMCD_DB2_STR-ARCHMETH2OPT sy-vline 
WA_DB6PMCD_DB2_STR-FAILOVERLOG sy-vline 
WA_DB6PMCD_DB2_STR-NUMARCHRETRY sy-vline 
WA_DB6PMCD_DB2_STR-ARCHRETRYDELAY sy-vline 
WA_DB6PMCD_DB2_STR-VENDOROPT sy-vline 
WA_DB6PMCD_DB2_STR-ALT_COLLATE sy-vline 
WA_DB6PMCD_DB2_STR-APG_MEM_SZ sy-vline 
WA_DB6PMCD_DB2_STR-BLK_LD_FUL sy-vline 
WA_DB6PMCD_DB2_STR-DB_MEMORY sy-vline 
WA_DB6PMCD_DB2_STR-DFT_MTTB_TYPES sy-vline 
WA_DB6PMCD_DB2_STR-DL_WT_IEXP sy-vline 
WA_DB6PMCD_DB2_STR-GRPHP_RAT sy-vline 
WA_DB6PMCD_DB2_STR-MAXLOG sy-vline 
WA_DB6PMCD_DB2_STR-MR_LOGPATH sy-vline 
WA_DB6PMCD_DB2_STR-NUMLOGSP sy-vline 
WA_DB6PMCD_DB2_STR-OV_LOGPATH sy-vline 
WA_DB6PMCD_DB2_STR-SHEAPTRES sy-vline 
WA_DB6PMCD_DB2_STR-TRACKMOD sy-vline 
WA_DB6PMCD_DB2_STR-AUTO_MAINT sy-vline 
WA_DB6PMCD_DB2_STR-AUTO_DB_BACKUP sy-vline 
WA_DB6PMCD_DB2_STR-AUTO_TBL_MAINT sy-vline 
WA_DB6PMCD_DB2_STR-AUTO_RUNSTATS sy-vline 
WA_DB6PMCD_DB2_STR-AUTO_STATS_PROF sy-vline 
WA_DB6PMCD_DB2_STR-AUTO_PROF_UPD sy-vline 
WA_DB6PMCD_DB2_STR-AUTO_REORG sy-vline 
WA_DB6PMCD_DB2_STR-PAGESIZE sy-vline      INTO ld_text SEPARATED BY SPACE.

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