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See the chapter on data types in the User 's Guide for details . The output function for a type should not try to generate the backslash character ; this will be handled by COPY itself . Refer to the chapter on libpq in the Programmer 's Guide for more details . He also wrote a chapter on it for the Programmer 's Guide.Jan also contributed a second procedural language , PL / pgSQL , to go with the original PL / pgTCL procedural language he contributed last release.We have optional multiple-byte character set support from Tatsuo Iishi to complement our existing locale support.Client / server communications has been cleaned up , with better support for asynchronous messages and interrupts thanks to Tom Lane.The parser will now perform automatic type coersion to match arguments to available operators and functions , and to match columns and expressions with target columns . Sheehan served as the single point of contact for all combat-zone airfield design , maintenance , and repair ensuring 11 airfields were 100 % operational . the others The other parts of the querytree like the ORDER BY clause arent of interest here . He has completed studies on the optimization of air handling unit sizing and selection as well as an energy analysis of the effects of the latest building energy codes on new building design .