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database/sql: update doc related to per-connection state
Fixes #25330 Change-Id: I41b5b3459ed7808d18112ec02d734e2268099a81 Reviewed-on: https://go-review.googlesource.com/116596 Reviewed-by: Daniel Theophanes <kardianos@gmail.com>
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@ -340,8 +340,8 @@ var ErrNoRows = errors.New("sql: no rows in result set")
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//
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// The sql package creates and frees connections automatically; it
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// also maintains a free pool of idle connections. If the database has
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// a concept of per-connection state, such state can only be reliably
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// observed within a transaction. Once DB.Begin is called, the
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// a concept of per-connection state, such state can be reliably observed
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// within a transaction (Tx) or connection (Conn). Once DB.Begin is called, the
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// returned Tx is bound to a single connection. Once Commit or
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// Rollback is called on the transaction, that transaction's
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// connection is returned to DB's idle connection pool. The pool size
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