// Copyright 2019 PingCAP, Inc. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // See the License for the specific language governing permissions and // limitations under the License. package aggfuncs_test import ( "fmt" . "github.com/pingcap/check" "github.com/pingcap/parser/ast" "github.com/pingcap/parser/mysql" "github.com/pingcap/tidb/sessionctx/variable" "github.com/pingcap/tidb/types" ) func (s *testSuite) TestMergePartialResult4GroupConcat(c *C) { test := buildAggTester(ast.AggFuncGroupConcat, mysql.TypeString, 5, "0 1 2 3 4", "2 3 4", "0 1 2 3 4 2 3 4") s.testMergePartialResult(c, test) } func (s *testSuite) TestGroupConcat(c *C) { test := buildAggTester(ast.AggFuncGroupConcat, mysql.TypeString, 5, nil, "0 1 2 3 4") s.testAggFunc(c, test) test2 := buildMultiArgsAggTester(ast.AggFuncGroupConcat, []byte{mysql.TypeString, mysql.TypeString}, mysql.TypeString, 5, nil, "44 33 22 11 00") test2.orderBy = true s.testMultiArgsAggFunc(c, test2) defer variable.SetSessionSystemVar(s.ctx.GetSessionVars(), variable.GroupConcatMaxLen, types.NewStringDatum("1024")) // minimum GroupConcatMaxLen is 4 for i := 4; i <= 7; i++ { variable.SetSessionSystemVar(s.ctx.GetSessionVars(), variable.GroupConcatMaxLen, types.NewStringDatum(fmt.Sprint(i))) test2 = buildMultiArgsAggTester(ast.AggFuncGroupConcat, []byte{mysql.TypeString, mysql.TypeString}, mysql.TypeString, 5, nil, "44 33 22 11 00"[:i]) test2.orderBy = true s.testMultiArgsAggFunc(c, test2) } }