0

我们在 Bigquery 中收到一个调查 Web-hook 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执行正则表达式以避免特殊字符。

#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

它的返回错误：-

  • 查询失败

  • 错误：无效的代码点 55357

我发现“\ud83c\udf38”它的返回错误这是表情符号返回错误中的“樱花”。如何做正则表达式或转换器来解决这个问题？

4

1 回答 1

0

我不认为你可以在纯 SQL 中做到这一点。

我建议将 UTF-16 表情符号转换为 HTML 实体（十六进制）以将它们存储在数据库中。很可能您需要使用一种编程语言来执行此操作：

在 .NET 中尝试这样

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 ( ref )中为此使用emoji4j库：

String line = "Hi , i am fine \uD83D\uDE02 \uD83D\uDE02, how r u ?";
EmojiUtils.hexHtmlify(line); //Hi , i am fine 😂 😂, how r u ?
于 2017-11-30T05:50:36.913 回答