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Update executable.md

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Adding the sentence on the requirement to run the script.
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avinzhang 2024-01-17 17:42:59 +10:00 committed by GitHub
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docs/en/sql-reference/table-functions/executable.md
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@ -7,7 +7,7 @@ keywords: [udf, user defined function, clickhouse, executable, table, function]
# executable Table Function for UDFs
The `executable` table function creates a table based on the output of a user-defined function (UDF) that you define in a script that outputs rows to **stdout**. The executable script is stored in the `users_scripts` directory and can read data from any source.
The `executable` table function creates a table based on the output of a user-defined function (UDF) that you define in a script that outputs rows to **stdout**. The executable script is stored in the `users_scripts` directory and can read data from any source. Make sure the clickhouse server meets the requirement to run the executable script. e.g. If it's a python script, make sure the server has installed python packages to run the script.
You can optionally include one or more input queries that stream their results to **stdin** for the script to read.