UDFs (User-Defined Functions)

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For a tutorial on writing user-defined SQL functions, see the following page:

User-defined functions (UDFs) let you extend the system to perform operations that are not available through the built-in, system-defined functions provided by Snowflake. Snowflake currently supports the following languages for writing UDFs:

  • Java: A Java UDF lets you use the Java programming language to manipulate data and return either scalar or tabular results.

  • JavaScript: A JavaScript UDF lets you use the JavaScript programming language to manipulate data and return either scalar or tabular results.

  • Python: A Python UDF lets you use the Python programming language to manipulate data and return either scalar or tabular results.

  • SQL: A SQL UDF evaluates an arbitrary SQL expression and returns either scalar or tabular results.

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