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Update 10-function.md

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docs/en/12-taos-sql/10-function.md
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@ -540,7 +540,7 @@ TO_CHAR(ts, format_str_literal)
- If we want to output some characters of format without converting, surround it with double quotes. `to_char(ts, 'yyyy-mm-dd "is formated by yyyy-mm-dd"')`. If want to output double quotes, add a back slash before double quote, like `to_char(ts, '\"yyyy-mm-dd\"')` will output `"2023-10-10"`.
- For formats that output digits, the uppercase and lowercase formats are the same.
- It's recommended to put time zone in the format, if not, the default time zone will be that in server or client.
- The precision of the input timestamp will be recognized automatically according to the precision of the table used.
- The precision of the input timestamp will be recognized automatically according to the precision of the table used, milli seconds will be used if no table is specified.
#### TO_TIMESTAMP