table: fix first key (pingcap#4572)

zhuomingliang · Sep 19, 2017 · 2145586 · 2145586
1 parent a239324
commit 2145586
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/table/tables/tables.go b/table/tables/tables.go
@@ -18,6 +18,7 @@
 package tables
 
 import (
+	"math"
 	"strings"
 
 	log "github.com/Sirupsen/logrus"
@@ -203,7 +204,7 @@ func (t *Table) RecordKey(h int64) kv.Key {
 
 // FirstKey implements table.Table FirstKey interface.
 func (t *Table) FirstKey() kv.Key {
-	return t.RecordKey(0)
+	return t.RecordKey(math.MinInt64)
 }
 
 // UpdateRecord implements table.Table UpdateRecord interface.

diff --git a/table/tables/tables_test.go b/table/tables/tables_test.go
@@ -285,7 +285,7 @@ func (ts *testSuite) TestIterRecords(c *C) {
 	ts.se.Execute("DROP TABLE IF EXISTS test.tIter")
 	_, err := ts.se.Execute("CREATE TABLE test.tIter (a int primary key, b int)")
 	c.Assert(err, IsNil)
-	_, err = ts.se.Execute("INSERT test.tIter VALUES (1, 2), (2, NULL)")
+	_, err = ts.se.Execute("INSERT test.tIter VALUES (-1, 2), (2, NULL)")
 	c.Assert(err, IsNil)
 	ctx := ts.se.(context.Context)
 	c.Assert(ctx.NewTxn(), IsNil)