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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
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236 B
Text
4 lines
236 B
Text
PL/Tcl is a dynamic loadable extension for the PostgreSQL database system
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that enables the Tcl language to be used to create functions and
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trigger-procedures. It offers most of the capabilities a function
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writer has in the C language.
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