Question

我们在Bigquery中收到调查Web挂钩数据。本地语言的注释被捕获为unicode和特殊字符。我已经编写了将unicode转换为本地语言的函数，并使用正则表达式来避免使用特殊字符。

#standardSQL
CREATE TEMP FUNCTION DecodeUnicode(s STRING) AS (
(SELECT CODE_POINTS_TO_STRING(ARRAY_AGG(CAST(CONCAT('0x', x) AS INT64)))
FROM UNNEST(SPLIT(s, '\\u')) AS x
WHERE x != ''
)
);
WITH NPSDashboard_Webhook_Data1_copy AS (
SELECT
TRIM(Comment) Comment
FROM
`radiant-micron-790.Sharmila_Testing.NPSDashboard_Webhook_Data1_copy`
)
,
uchars AS (
SELECT DISTINCT
c,
DecodeUnicode(c) uchar
FROM NPSDashboard_Webhook_Data1_copy,
UNNEST(REGEXP_EXTRACT_ALL(Comment, r'(\\u[abcdef0-9]{4})')) c
)

SELECT
Comment,
STRING_AGG(IFNULL(uchar, x), '' ORDER BY pos) Decoded
FROM (
SELECT
Comment,
pos,
SUBSTR(Comment,
SUM(CASE char WHEN '' THEN 1 ELSE 6 END)
  OVER(PARTITION BY Comment ORDER BY pos) - CASE char WHEN '' THEN 0 ELSE 5 
  END,
  CASE char WHEN '' THEN 1 ELSE 6 END) x,
  uchar
  FROM NPSDashboard_Webhook_Data1_copy,
  UNNEST(REGEXP_EXTRACT_ALL(Comment, r'(\\u[abcdef0-9]{4})|.')) char WITH OFFSET AS pos
  LEFT JOIN uchars u ON u.c = char
  )
  GROUP BY Comment

返回错误： -

查询失败
错误：无效的代码点55357

我发现＆＃34; \ ud83c \ udf38＆＃34;它的返回错误是＆＃34;樱花＆＃34;在表情符号返回错误。如何使用正则表达式或转换器来解决这个问题？

Answer 1

我认为你不能用纯SQL做到这一点。

我建议将UTF-16 Emojis转换为HTML实体（十六进制）以将它们存储在数据库中。很可能你需要使用编程语言来这样做：

在.NET中尝试这样做

using System;
using System.Text;
using System.Globalization;
using System.Net;

public class Program
{
    public static void Main()
    {

        Console.WriteLine(WebUtility.HtmlEncode("\uD83D\uDE02"));
    }
}

或者您可以在Java中使用emoji4j库（ref）：

String line = "Hi , i am fine \uD83D\uDE02 \uD83D\uDE02, how r u ?";
EmojiUtils.hexHtmlify(line); //Hi , i am fine &#x1f602; &#x1f602;, how r u ?

ReGex避免使用表情符号 - Unicode / BigQuery

1 个答案: