By using the CAST function and XML CAST, you can easily encode and decode data in Base64 format. In conclusion, Base64 encoding and decoding can be useful techniques for storing and transmitting data in SQLServer. Be cautious when transmitting sensitive information in Base64 format.īy keeping these precautions in mind, you can use Base64 encoding and decoding safely and effectively in your SQLServer code. Since Base64 is a reversible process, anyone with access to the encoded data can easily decode it. If you need to encrypt your data, use a proper encryption algorithm.īase64 can be easily reversed. Base64 encoding does not provide any security benefits. Be sure to test the performance of your code before using it in production.īase64 is not encryption. Decoding large amounts of data can take a significant amount of time. Keep this in mind when deciding whether to use Base64 encoding.īase64 decoding can be slow. The encoded data is typically 33% larger than the original data. Here are a few things to keep in mind:īase64 encoding can increase the size of the data. ![]() While Base64 encoding and decoding can be useful techniques, it’s important to take some precautions when using them. The resulting output will be the decoded string. Then, it uses the CAST function again to convert the binary data to its original form. ![]() ![]() This code uses the same XML CAST as before, but this time it converts the Base64-encoded string directly to binary data. value ( 'xs:base64Binary(sql:column("bin"))', 'VARBINARY(MAX)' ) AS DecodedString 2 FROM ( SELECT CAST ( base64EncodedString AS VARCHAR ( MAX )) AS bin ) AS bin_sql_server_temp
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