| Server IP : 85.214.239.14 / Your IP : 3.141.47.25 Web Server : Apache/2.4.61 (Debian) System : Linux h2886529.stratoserver.net 4.9.0 #1 SMP Tue Jan 9 19:45:01 MSK 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.18 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : OFF | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : OFF Directory : /proc/3/root/proc/self/root/usr/include/postgresql/9.6/server/utils/ |
Upload File : |
/*------------------------------------------------------------------------- * * datum.h * POSTGRES Datum (abstract data type) manipulation routines. * * These routines are driven by the 'typbyval' and 'typlen' information, * which must previously have been obtained by the caller for the datatype * of the Datum. (We do it this way because in most situations the caller * can look up the info just once and use it for many per-datum operations.) * * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/utils/datum.h * *------------------------------------------------------------------------- */ #ifndef DATUM_H #define DATUM_H /* * datumGetSize - find the "real" length of a datum */ extern Size datumGetSize(Datum value, bool typByVal, int typLen); /* * datumCopy - make a copy of a non-NULL datum. * * If the datatype is pass-by-reference, memory is obtained with palloc(). */ extern Datum datumCopy(Datum value, bool typByVal, int typLen); /* * datumTransfer - transfer a non-NULL datum into the current memory context. * * Differs from datumCopy() in its handling of read-write expanded objects. */ extern Datum datumTransfer(Datum value, bool typByVal, int typLen); /* * datumIsEqual * return true if two datums of the same type are equal, false otherwise. * * XXX : See comments in the code for restrictions! */ extern bool datumIsEqual(Datum value1, Datum value2, bool typByVal, int typLen); /* * Serialize and restore datums so that we can transfer them to parallel * workers. */ extern Size datumEstimateSpace(Datum value, bool isnull, bool typByVal, int typLen); extern void datumSerialize(Datum value, bool isnull, bool typByVal, int typLen, char **start_address); extern Datum datumRestore(char **start_address, bool *isnull); #endif /* DATUM_H */