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Running SQL database, will changing the length property of the field not cause problems?

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Post time: 2020-1-20 19:20:02
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The database is running, there is a field type of varchar and the length is 50. I want to change the length to 100. I wonder if there will be any foreign problems.
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Post time: 2020-1-29 20:09:02
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There should be no problem in making it bigger.
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Post time: 2020-1-29 20:18:01
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will not
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 Author| Post time: 2020-1-31 22:45:01
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Thank you!
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Post time: 2020-2-1 11:36:01
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Will not
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