Daniel Theophanes 6a223b82a4 database/sql: add driver.ResetSessioner and add pool support ... A single database connection ususally maps to a single session. A connection pool is logically also a session pool. Most sessions have a way to reset the session state which is desirable to prevent one bad query from poisoning another later query with temp table name conflicts or other persistent session resources. It also lets drivers provide users with better error messages from queryies when the underlying transport or query method fails. Internally the driver connection should now be marked as bad, but return the actual connection. When ResetSession is called on the connection it should return driver.ErrBadConn to remove it from the connection pool. Previously drivers had to choose between meaningful error messages or poisoning the connection pool. Lastly update TestPoolExhaustOnCancel from relying on a WAIT query fixing a flaky timeout issue exposed by this change. Fixes #22049 Fixes #20807 Change-Id: I2b5df6d954a38d0ad93bf1922ec16e74c827274c Reviewed-on: https://go-review.googlesource.com/73033 Run-TryBot: Daniel Theophanes <kardianos@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>		2017-10-24 21:37:46 +00:00
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driver	database/sql: add driver.ResetSessioner and add pool support	2017-10-24 21:37:46 +00:00
convert.go	database/sql: convertAssign string and time.Time into RawBytes	2017-10-01 16:41:57 +00:00
convert_test.go	database/sql: convertAssign string and time.Time into RawBytes	2017-10-01 16:41:57 +00:00
ctxutil.go	database/sql: allow drivers to only implement Context variants	2017-10-24 16:51:29 +00:00
doc.txt	database/sql: fix outdated package name in doc.txt	2017-06-30 19:11:17 +00:00
example_test.go	all: minor vet fixes	2016-10-24 17:27:37 +00:00
fakedb_test.go	database/sql: add driver.ResetSessioner and add pool support	2017-10-24 21:37:46 +00:00
sql.go	database/sql: add driver.ResetSessioner and add pool support	2017-10-24 21:37:46 +00:00
sql_test.go	database/sql: add driver.ResetSessioner and add pool support	2017-10-24 21:37:46 +00:00