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package proto_test
import (
"bytes"
"fmt"
"github.com/ClickHouse/ch-go/proto"
)
func ExampleBlock_EncodeBlock() {
// See ./internal/cmd/ch-native-dump for more sophisticated example.
var (
colK proto.ColInt64
colV proto.ColInt64
)
// Generate some data.
for i := 0; i < 100; i++ {
colK.Append(int64(i))
colV.Append(int64(i) + 1000)
}
// Write data to buffer.
var buf proto.Buffer
input := proto.Input{
{"k", colK},
{"v", colV},
}
b := proto.Block{
Rows: colK.Rows(),
Columns: len(input),
}
// Note that we are using version 54451, proto.Version will fail.
if err := b.EncodeRawBlock(&buf, 54451, input); err != nil {
panic(err)
}
// You can write buf.Buf to io.Writer, e.g. os.Stdout or file.
var out bytes.Buffer
_, _ = out.Write(buf.Buf)
// You can encode multiple buffers in sequence.
//
// To do this, reset buf and all columns, append new values
// to columns and call EncodeRawBlock again.
buf.Reset()
colV.Reset()
colV.Reset()
fmt.Println(out.Len())
// Output: 1618
}
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