tsql - Hidden Features of SQL Server -

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what hidden features of sql server?

for example, undocumented system stored procedures, tricks things useful not documented enough?

answers

thanks great answers!

stored procedures

  • sp_msforeachtable: runs command '?' replaced each table name (v6.5 , up)
  • sp_msforeachdb: runs command '?' replaced each database name (v7 , up)
  • sp_who2: sp_who, lot more info troubleshooting blocks (v7 , up)
  • sp_helptext: if want code of stored procedure, view & udf
  • sp_tables: return list of tables , views of database in scope.
  • sp_stored_procedures: return list of stored procedures
  • xp_sscanf: reads data string argument locations specified each format argument.
  • xp_fixeddrives:: find fixed drive largest free space
  • sp_help: if want know table structure, indexes , constraints of table. views , udfs. shortcut alt+f1

snippets

  • returning rows in random order
  • all database user objects last modified date
  • return date only
  • find records date falls somewhere inside current week.
  • find records date occurred last week.
  • returns date beginning of current week.
  • returns date beginning of last week.
  • see text of procedure has been deployed server
  • drop connections database
  • table checksum
  • row checksum
  • drop procedures in database
  • re-map login ids correctly after restore
  • call stored procedures insert statement
  • find procedures keyword
  • drop procedures in database
  • query transaction log database programmatically.

functions

  • hashbytes()
  • encryptbykey
  • pivot command

misc

  • connection string extras
  • tablediff.exe
  • triggers logon events (new in service pack 2)
  • boosting performance persisted-computed-columns (pcc).
  • default_schema setting in sys.database_principles
  • forced parameterization
  • vardecimal storage format
  • figuring out popular queries in seconds
  • scalable shared databases
  • table/stored procedure filter feature in sql management studio
  • trace flags
  • number after go repeats batch
  • security using schemas
  • encryption using built in encryption functions, views , base tables triggers

in management studio, can put number after go end-of-batch marker cause batch repeated number of times:

print 'x' go 10

will print 'x' 10 times. can save tedious copy/pasting when doing repetitive stuff.


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