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Quick reference: Snowpark Java APIs for SQL commands
This topic provides a quick reference of some of the Snowpark APIs that correspond to SQL commands. (Note that this is not a complete list of the APIs that correspond to SQL commands.)…
Java UDF handler examples
This code returns the VARCHAR passed to it. This function is declared with the optional CALLED ON NULL INPUT clause to indicate that the function is called even if the value of the input is NULL.
Python and Java support for serverless tasks
Serverless tasks can invoke the following object types and functions: user - defined functions (UDFs) and stored procedures written in Python, Java, and Scala. You can use Python or Java in your tasks in a few different ways.
Analyzing queries and troubleshooting with Snowpark Java
To inspect the evaluation plan of a DataFrame, call the explain method of the DataFrame. This prints the SQL statements used to evaluate the DataFrame. If there is only one SQL statement, the method also prints the logical plan for the…
Tabular Java UDFs (UDTFs)
Your Java UDTF handler class processes rows received in the UDTF call and returns a tabular result. The received rows are partitioned, either implicitly by Snowflake or explicitly in the syntax of the function call.
Creating a Java UDF handler
When you write a Java UDF, you write Java code for Snowflake to execute as UDF logic. This Java code is the UDF’s handler. You deploy the UDF with CREATE FUNCTION, giving the UDF a name and specifying the Java method as the handler to…
Logging messages in Java
You can log messages from a function or procedure handler written in Java by using the SLF4J API. When you’ve set up an event table to store log entries, Snowflake stores log entries generated by your handler code in the table.
JDBC driver with -Dhttp.nonProxyHosts=* set throws java.lang.StringIndexOutOfBoundsException: begin 1, end 0, length 1
StringIndexOutOfBoundsException: begin 1, end 0, length 1 at java.
Introduction to Java UDFs
When a user calls a UDF, the user passes UDF’s name and arguments to Snowflake. Snowflake calls the associated handler code (with arguments, if any) to execute the UDF’s logic. The handler method then returns the output to Snowflake,…
JDBC driver throws javax.naming.CommunicationException: DNS error (Root exception: java.net.SocketTimeoutException)
ISSUE: The following exception occurs on macOS (aarch64) when using the JDBC driver’s diagnostic feature (i.e., ENABLE_DIAGNOSTICS=TRUE)…