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47 lines
1.8 KiB
47 lines
1.8 KiB
// 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 aggfuncs_test
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import (
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"fmt"
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. "github.com/pingcap/check"
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"github.com/pingcap/parser/ast"
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"github.com/pingcap/parser/mysql"
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"github.com/pingcap/tidb/sessionctx/variable"
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"github.com/pingcap/tidb/types"
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)
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func (s *testSuite) TestMergePartialResult4GroupConcat(c *C) {
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test := buildAggTester(ast.AggFuncGroupConcat, mysql.TypeString, 5, "0 1 2 3 4", "2 3 4", "0 1 2 3 4 2 3 4")
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s.testMergePartialResult(c, test)
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}
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func (s *testSuite) TestGroupConcat(c *C) {
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test := buildAggTester(ast.AggFuncGroupConcat, mysql.TypeString, 5, nil, "0 1 2 3 4")
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s.testAggFunc(c, test)
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test2 := buildMultiArgsAggTester(ast.AggFuncGroupConcat, []byte{mysql.TypeString, mysql.TypeString}, mysql.TypeString, 5, nil, "44 33 22 11 00")
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test2.orderBy = true
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s.testMultiArgsAggFunc(c, test2)
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defer variable.SetSessionSystemVar(s.ctx.GetSessionVars(), variable.GroupConcatMaxLen, types.NewStringDatum("1024"))
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// minimum GroupConcatMaxLen is 4
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for i := 4; i <= 7; i++ {
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variable.SetSessionSystemVar(s.ctx.GetSessionVars(), variable.GroupConcatMaxLen, types.NewStringDatum(fmt.Sprint(i)))
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test2 = buildMultiArgsAggTester(ast.AggFuncGroupConcat, []byte{mysql.TypeString, mysql.TypeString}, mysql.TypeString, 5, nil, "44 33 22 11 00"[:i])
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test2.orderBy = true
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s.testMultiArgsAggFunc(c, test2)
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}
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}
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