42 lines
1.5 KiB
Go
42 lines
1.5 KiB
Go
// Copyright 2024 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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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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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 analyzehelper
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import (
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"fmt"
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"testing"
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"github.com/pingcap/tidb/pkg/kv"
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"github.com/pingcap/tidb/pkg/session"
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"github.com/pingcap/tidb/pkg/testkit"
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"github.com/stretchr/testify/require"
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)
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// TriggerPredicateColumnsCollection triggers the collection of predicate columns for the specified table.
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func TriggerPredicateColumnsCollection(t *testing.T, tk *testkit.TestKit, store kv.Storage, tableName string, columns ...string) {
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do, err := session.GetDomain(store)
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require.NoError(t, err)
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statsHandle := do.StatsHandle()
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// Execute a SELECT statement for each column in the provided list to trigger a predicate column collection.
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for _, column := range columns {
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query := fmt.Sprintf("SELECT * FROM %s WHERE %s = '1'", tableName, column)
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tk.MustExec(query)
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}
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// After executing the SELECT statements, dump the column statistics usage to KV.
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require.NoError(t, statsHandle.DumpColStatsUsageToKV())
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}
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