diff --git a/LICENSE.md b/LICENSES/LICENSE
similarity index 100%
rename from LICENSE.md
rename to LICENSES/LICENSE
diff --git a/docs/ql-license b/LICENSES/QL-LICENSE
similarity index 99%
rename from docs/ql-license
rename to LICENSES/QL-LICENSE
index 0d10c02b92..c11db18036 100644
--- a/docs/ql-license
+++ b/LICENSES/QL-LICENSE
@@ -24,4 +24,4 @@ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\ No newline at end of file
diff --git a/LICENSES/STRUTIL-LICENSE b/LICENSES/STRUTIL-LICENSE
new file mode 100644
index 0000000000..28713a467a
--- /dev/null
+++ b/LICENSES/STRUTIL-LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2014 The strutil Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the names of the authors nor the names of the
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\ No newline at end of file
diff --git a/README.md b/README.md
index 4ccb2aa198..218f8ea2d8 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,7 @@ for details on submitting patches and the contribution workflow.
 Twitter: [@PingCAP](https://twitter.com/PingCAP)
 
 ## License
-TiDB is under the Apache 2.0 license. See the [LICENSE](./LICENSE.md) file for details.
+TiDB is under the Apache 2.0 license. See the [LICENSE](./LICENSES/LICENSE) file for details.
 
 ## Acknowledgments
 - Thanks [cznic](https://github.com/cznic) for providing some great open source tools.
diff --git a/column/column.go b/column/column.go
index 97a996f7d5..9495fdb60e 100644
--- a/column/column.go
+++ b/column/column.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/ddl/ddl.go b/ddl/ddl.go
index ed10f45d0d..3def01cedc 100644
--- a/ddl/ddl.go
+++ b/ddl/ddl.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/driver.go b/driver.go
index 2f0959bfae..b32fc5f81b 100644
--- a/driver.go
+++ b/driver.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expression.go b/expression/expression.go
index c968f9584e..11644bc385 100644
--- a/expression/expression.go
+++ b/expression/expression.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/between.go b/expression/expressions/between.go
index f82ea851f0..f13c145b23 100644
--- a/expression/expressions/between.go
+++ b/expression/expressions/between.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/binop.go b/expression/expressions/binop.go
index 5845d7b835..6a8e115130 100644
--- a/expression/expressions/binop.go
+++ b/expression/expressions/binop.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/builtin.go b/expression/expressions/builtin.go
index 18c79aebc7..b979a1afa6 100644
--- a/expression/expressions/builtin.go
+++ b/expression/expressions/builtin.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/builtin_groupby.go b/expression/expressions/builtin_groupby.go
index c6d2d96819..c7a5240f47 100644
--- a/expression/expressions/builtin_groupby.go
+++ b/expression/expressions/builtin_groupby.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/builtin_math.go b/expression/expressions/builtin_math.go
index f3ad79f468..3bc1cde28f 100644
--- a/expression/expressions/builtin_math.go
+++ b/expression/expressions/builtin_math.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/builtin_string.go b/expression/expressions/builtin_string.go
index 6b6c97c63d..3248d9529f 100644
--- a/expression/expressions/builtin_string.go
+++ b/expression/expressions/builtin_string.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/builtin_time.go b/expression/expressions/builtin_time.go
index 99b50401a6..a388d5e730 100644
--- a/expression/expressions/builtin_time.go
+++ b/expression/expressions/builtin_time.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/call.go b/expression/expressions/call.go
index 7c3b8a5162..db5b538713 100644
--- a/expression/expressions/call.go
+++ b/expression/expressions/call.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/helper.go b/expression/expressions/helper.go
index 8ac583cd45..f4b162ea9e 100644
--- a/expression/expressions/helper.go
+++ b/expression/expressions/helper.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/ident.go b/expression/expressions/ident.go
index a8a7bb2d50..54d67ff0dd 100644
--- a/expression/expressions/ident.go
+++ b/expression/expressions/ident.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/in.go b/expression/expressions/in.go
index 599131c475..ecd0c9f56e 100644
--- a/expression/expressions/in.go
+++ b/expression/expressions/in.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/like.go b/expression/expressions/like.go
index cbabdcb8a0..4f7ce4dcc9 100644
--- a/expression/expressions/like.go
+++ b/expression/expressions/like.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/pexpr.go b/expression/expressions/pexpr.go
index 2c1ca9b4fb..b61b154abd 100644
--- a/expression/expressions/pexpr.go
+++ b/expression/expressions/pexpr.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/regexp.go b/expression/expressions/regexp.go
index 0b65005cd1..a107d9d84d 100644
--- a/expression/expressions/regexp.go
+++ b/expression/expressions/regexp.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/unary.go b/expression/expressions/unary.go
index c6263dc5b5..182b08e30f 100644
--- a/expression/expressions/unary.go
+++ b/expression/expressions/unary.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/expression/expressions/value.go b/expression/expressions/value.go
index 683018dd49..83d100144f 100644
--- a/expression/expressions/value.go
+++ b/expression/expressions/value.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/field/field.go b/field/field.go
index 302448968e..059cf86e44 100644
--- a/field/field.go
+++ b/field/field.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/field/result_field.go b/field/result_field.go
index d8a9958454..6fb5633ef4 100644
--- a/field/result_field.go
+++ b/field/result_field.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/kv/memkv/btree.go b/kv/memkv/btree.go
index 91e8a8f152..34e249162b 100644
--- a/kv/memkv/btree.go
+++ b/kv/memkv/btree.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/kv/memkv/temp.go b/kv/memkv/temp.go
index 397ba67cc0..01e9d43d05 100644
--- a/kv/memkv/temp.go
+++ b/kv/memkv/temp.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/parser/parser.y b/parser/parser.y
index a1712006ac..cd80e9ac09 100644
--- a/parser/parser.y
+++ b/parser/parser.y
@@ -1,7 +1,7 @@
 %{
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/parser/scanner.l b/parser/scanner.l
index d3ea5704dc..c77d3d97a1 100644
--- a/parser/scanner.l
+++ b/parser/scanner.l
@@ -1,7 +1,7 @@
 %{
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/plan/plan.go b/plan/plan.go
index 4602c3dadb..72600d5d9e 100644
--- a/plan/plan.go
+++ b/plan/plan.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/plan/plans/distinct.go b/plan/plans/distinct.go
index 59a892fc83..4d3c814fea 100644
--- a/plan/plans/distinct.go
+++ b/plan/plans/distinct.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/plan/plans/explain.go b/plan/plans/explain.go
index 6a0f0231db..06d907e76b 100644
--- a/plan/plans/explain.go
+++ b/plan/plans/explain.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/plan/plans/fields.go b/plan/plans/fields.go
index 17e5641b3e..ecebad41a1 100644
--- a/plan/plans/fields.go
+++ b/plan/plans/fields.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/plan/plans/from.go b/plan/plans/from.go
index bdee50570a..1d20753754 100644
--- a/plan/plans/from.go
+++ b/plan/plans/from.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/plan/plans/groupby.go b/plan/plans/groupby.go
index b6356e0654..401bc100ce 100644
--- a/plan/plans/groupby.go
+++ b/plan/plans/groupby.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/plan/plans/join.go b/plan/plans/join.go
index 66fee44463..106b0c0496 100644
--- a/plan/plans/join.go
+++ b/plan/plans/join.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/plan/plans/limit.go b/plan/plans/limit.go
index 834587490a..ac65e26907 100644
--- a/plan/plans/limit.go
+++ b/plan/plans/limit.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/plan/plans/orderby.go b/plan/plans/orderby.go
index a97c92f575..77a3279094 100644
--- a/plan/plans/orderby.go
+++ b/plan/plans/orderby.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/plan/plans/plans.go b/plan/plans/plans.go
index ab1ace147d..6c6d36af84 100644
--- a/plan/plans/plans.go
+++ b/plan/plans/plans.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/plan/plans/where.go b/plan/plans/where.go
index 1ba2cad4c2..01005a7eaf 100644
--- a/plan/plans/where.go
+++ b/plan/plans/where.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/rset/rset.go b/rset/rset.go
index 1f10b7cbc5..f5dc283bd2 100644
--- a/rset/rset.go
+++ b/rset/rset.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/rset/rsets/distinct.go b/rset/rsets/distinct.go
index 51e1b37684..4ea5b8efd8 100644
--- a/rset/rsets/distinct.go
+++ b/rset/rsets/distinct.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/rset/rsets/fields.go b/rset/rsets/fields.go
index 76dcc53714..bebadb6369 100644
--- a/rset/rsets/fields.go
+++ b/rset/rsets/fields.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/rset/rsets/from.go b/rset/rsets/from.go
index 7305e68b3a..337cdc1617 100644
--- a/rset/rsets/from.go
+++ b/rset/rsets/from.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/rset/rsets/groupby.go b/rset/rsets/groupby.go
index 2bc17d8942..e854bdcf1a 100644
--- a/rset/rsets/groupby.go
+++ b/rset/rsets/groupby.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/rset/rsets/join.go b/rset/rsets/join.go
index d342d3b990..3d38f294e1 100644
--- a/rset/rsets/join.go
+++ b/rset/rsets/join.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/rset/rsets/limit.go b/rset/rsets/limit.go
index 2de34b3e71..9585db3958 100644
--- a/rset/rsets/limit.go
+++ b/rset/rsets/limit.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/rset/rsets/orderby.go b/rset/rsets/orderby.go
index 12c97c0b5d..22b2cadef1 100644
--- a/rset/rsets/orderby.go
+++ b/rset/rsets/orderby.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/rset/rsets/rsets.go b/rset/rsets/rsets.go
index 74068ee09b..bba5e95e53 100644
--- a/rset/rsets/rsets.go
+++ b/rset/rsets/rsets.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/rset/rsets/where.go b/rset/rsets/where.go
index 68381a5c37..9ef0e067f1 100644
--- a/rset/rsets/where.go
+++ b/rset/rsets/where.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/session.go b/session.go
index 7411b908c8..b22546357f 100644
--- a/session.go
+++ b/session.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmt.go b/stmt/stmt.go
index 5d3747f60c..3c3dc60354 100644
--- a/stmt/stmt.go
+++ b/stmt/stmt.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmts/altertable.go b/stmt/stmts/altertable.go
index c9af204cfb..2c014cd2f6 100644
--- a/stmt/stmts/altertable.go
+++ b/stmt/stmts/altertable.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmts/create.go b/stmt/stmts/create.go
index cd0c3855f8..1dcfa5d59a 100644
--- a/stmt/stmts/create.go
+++ b/stmt/stmts/create.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmts/delete.go b/stmt/stmts/delete.go
index f4b09b46e4..b92c493802 100644
--- a/stmt/stmts/delete.go
+++ b/stmt/stmts/delete.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmts/drop.go b/stmt/stmts/drop.go
index ed91628644..8f7b685e25 100644
--- a/stmt/stmts/drop.go
+++ b/stmt/stmts/drop.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmts/explain.go b/stmt/stmts/explain.go
index de7a4e007a..57fd35d2cb 100644
--- a/stmt/stmts/explain.go
+++ b/stmt/stmts/explain.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmts/insert.go b/stmt/stmts/insert.go
index 5999856f3c..f75f71e7a7 100644
--- a/stmt/stmts/insert.go
+++ b/stmt/stmts/insert.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmts/select.go b/stmt/stmts/select.go
index 1354e80a72..7d11d219ac 100644
--- a/stmt/stmts/select.go
+++ b/stmt/stmts/select.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmts/transaction.go b/stmt/stmts/transaction.go
index 36be518fd5..2b5c8e7a1c 100644
--- a/stmt/stmts/transaction.go
+++ b/stmt/stmts/transaction.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmts/truncate.go b/stmt/stmts/truncate.go
index 0a8a7f5170..53da478e5a 100644
--- a/stmt/stmts/truncate.go
+++ b/stmt/stmts/truncate.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmts/update.go b/stmt/stmts/update.go
index 9105444af9..0e8b6c259d 100644
--- a/stmt/stmts/update.go
+++ b/stmt/stmts/update.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/stmt/stmts/use.go b/stmt/stmts/use.go
index c35b38d14f..1d91e076ea 100644
--- a/stmt/stmts/use.go
+++ b/stmt/stmts/use.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/table/table.go b/table/table.go
index 8aa41eca81..7270c82f90 100644
--- a/table/table.go
+++ b/table/table.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/table/tables/tables.go b/table/tables/tables.go
index d0d0c8f280..0e525d567c 100644
--- a/table/tables/tables.go
+++ b/table/tables/tables.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/tidb.go b/tidb.go
index 5b0e2e2820..b6542b9c1a 100644
--- a/tidb.go
+++ b/tidb.go
@@ -1,6 +1,6 @@
 // Copyright 2013 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/util/format/format.go b/util/format/format.go
index 67dd23bba6..d96f513998 100644
--- a/util/format/format.go
+++ b/util/format/format.go
@@ -1,6 +1,6 @@
-// Copyright 2014 The ql Authors. All rights reserved.
+// Copyright (c) 2014 The sortutil Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/STRUTIL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/util/prefix_helper.go b/util/prefix_helper.go
index 110eb0ff38..915cde620c 100644
--- a/util/prefix_helper.go
+++ b/util/prefix_helper.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/util/types/compare.go b/util/types/compare.go
index 5b9d898e7d..9c655f2b8e 100644
--- a/util/types/compare.go
+++ b/util/types/compare.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/util/types/convert.go b/util/types/convert.go
index ef515398ca..ddf032888b 100644
--- a/util/types/convert.go
+++ b/util/types/convert.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/util/types/etc.go b/util/types/etc.go
index 2375eb7915..a43c858154 100644
--- a/util/types/etc.go
+++ b/util/types/etc.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //
diff --git a/util/types/field_type.go b/util/types/field_type.go
index db99bf944a..6b69d40ead 100644
--- a/util/types/field_type.go
+++ b/util/types/field_type.go
@@ -1,6 +1,6 @@
 // Copyright 2014 The ql Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// license that can be found in the LICENSES/QL-LICENSE file.
 
 // Copyright 2015 PingCAP, Inc.
 //