44 lines
1.7 KiB
Go
44 lines
1.7 KiB
Go
// Copyright 2019 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package executor_test
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import (
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. "github.com/pingcap/check"
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"github.com/pingcap/tidb/util/testkit"
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)
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func (s *testSuite2) TestWindowFunctions(c *C) {
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tk := testkit.NewTestKit(c, s.store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t (a int, b int, c int)")
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tk.MustExec("set @@tidb_enable_window_function = 1")
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defer func() {
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tk.MustExec("set @@tidb_enable_window_function = 0")
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}()
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tk.MustExec("insert into t values (1,2,3),(4,3,2),(2,3,4)")
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result := tk.MustQuery("select count(a) over () from t")
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result.Check(testkit.Rows("3", "3", "3"))
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result = tk.MustQuery("select sum(a) over () + count(a) over () from t")
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result.Check(testkit.Rows("10", "10", "10"))
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result = tk.MustQuery("select sum(a) over (partition by a) from t")
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result.Check(testkit.Rows("1", "2", "4"))
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result = tk.MustQuery("select 1 + sum(a) over (), count(a) over () from t")
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result.Check(testkit.Rows("8 3", "8 3", "8 3"))
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result = tk.MustQuery("select sum(t1.a) over() from t t1, t t2")
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result.Check(testkit.Rows("21", "21", "21", "21", "21", "21", "21", "21", "21"))
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result = tk.MustQuery("select _tidb_rowid, sum(t.a) over() from t")
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result.Check(testkit.Rows("1 7", "2 7", "3 7"))
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}
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