TUN-2243: Revert "STOR-519: Add db-connect, a SQL over HTTPS server"

This reverts commit 5da2109811.

vendor/github.com/kshvakov/clickhouse/lib/column/nullable.go

@@ -1,81 +0,0 @@
-package column
-
-import (
-	"fmt"
-	"reflect"
-	"time"
-
-	"github.com/kshvakov/clickhouse/lib/binary"
-)
-
-type Nullable struct {
-	base
-	column Column
-}
-
-func (null *Nullable) ScanType() reflect.Type {
-	return null.column.ScanType()
-}
-
-func (null *Nullable) Read(decoder *binary.Decoder) (interface{}, error) {
-	return null.column.Read(decoder)
-}
-
-func (null *Nullable) Write(encoder *binary.Encoder, v interface{}) error {
-	return nil
-}
-
-func (null *Nullable) ReadNull(decoder *binary.Decoder, rows int) (_ []interface{}, err error) {
-	var (
-		isNull byte
-		value  interface{}
-		nulls  = make([]byte, rows)
-		values = make([]interface{}, rows)
-	)
-	for i := 0; i < rows; i++ {
-		if isNull, err = decoder.ReadByte(); err != nil {
-			return nil, err
-		}
-		nulls[i] = isNull
-	}
-	for i, isNull := range nulls {
-		switch value, err = null.column.Read(decoder); true {
-		case err != nil:
-			return nil, err
-		case isNull == 0:
-			values[i] = value
-		default:
-			values[i] = nil
-		}
-	}
-	return values, nil
-}
-func (null *Nullable) WriteNull(nulls, encoder *binary.Encoder, v interface{}) error {
-	if value := reflect.ValueOf(v); v == nil || (value.Kind() == reflect.Ptr && value.IsNil()) {
-		if _, err := nulls.Write([]byte{1}); err != nil {
-			return err
-		}
-		return null.column.Write(encoder, null.column.defaultValue())
-	}
-	if _, err := nulls.Write([]byte{0}); err != nil {
-		return err
-	}
-	return null.column.Write(encoder, v)
-}
-
-func parseNullable(name, chType string, timezone *time.Location) (*Nullable, error) {
-	if len(chType) < 14 {
-		return nil, fmt.Errorf("invalid Nullable column type: %s", chType)
-	}
-	column, err := Factory(name, chType[9:][:len(chType)-10], timezone)
-	if err != nil {
-		return nil, fmt.Errorf("Nullable(T): %v", err)
-	}
-	return &Nullable{
-		base: base{
-			name:   name,
-			chType: chType,
-		},
-		column: column,
-	}, nil
-}