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-rw-r--r--src/database/sql/sql.go7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/database/sql/sql.go b/src/database/sql/sql.go
index 38a173adba..8cdc903c68 100644
--- a/src/database/sql/sql.go
+++ b/src/database/sql/sql.go
@@ -2256,6 +2256,13 @@ var (
// Stmt is a prepared statement.
// A Stmt is safe for concurrent use by multiple goroutines.
+//
+// If a Stmt is prepared on a Tx or Conn, it will be bound to a single
+// underlying connection forever. If the Tx or Conn closes, the Stmt will
+// become unusable and all operations will return an error.
+// If a Stmt is prepared on a DB, it will remain usable for the lifetime of the
+// DB. When the Stmt needs to execute on a new underlying connection, it will
+// prepare itself on the new connection automatically.
type Stmt struct {
// Immutable:
db *DB // where we came from