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* Query language enhancements including "INSERT/UPDATE/DELETE RETURNING", multirow VALUES lists, and optional target-table alias in "UPDATE"/"DELETE" * Index creation without blocking concurrent "INSERT"/"UPDATE"/"DELETE" operations * Many query optimization improvements, including support for reordering outer joins * Improved sorting performance with lower memory usage * More efficient locking with better concurrency * More efficient vacuuming * Easier administration of warm standby servers * New FILLFACTOR support for tables and indexes * Monitoring, logging, and performance tuning additions * More control over creating and dropping objects * Table inheritance relationships can be defined for and removed from pre-existing tables * "COPY TO" can copy the output of an arbitrary "SELECT" statement * Array improvements, including nulls in arrays * Aggregate-function improvements, including multiple-input aggregates and SQL:2003 statistical functions * Many "contrib/" improvements
9 lines
512 B
Text
9 lines
512 B
Text
PL/Python allows you to write functions in the Python programming
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language that may be used in SQL queries as if they were built into
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Postgres. The PL/Python intepreter is a full Python interpreter.
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PL/Python is currently only available as an "untrusted" language
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(meaning it does not offer any way of restricting what users can do
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in it). It has therefore been named "plpythonu". The trusted variant
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plpython may become available again in future, if a new secure execution
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mechanism is developed in Python.
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