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Support hex-string input and output for type BYTEA.

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Both hex format and the traditional "escape" format are automatically
handled on input.  The output format is selected by the new GUC variable
bytea_output.

As committed, bytea_output defaults to HEX, which is an *incompatible
change*.  We will keep it this way for awhile for testing purposes, but
should consider whether to switch to the more backwards-compatible
default of ESCAPE before 8.5 is released.

Peter Eisentraut
This commit is contained in:
Tom Lane
2009-08-04 16:08:37 +00:00
parent f192e4a5d0
commit a2a8c7a662
21 changed files with 442 additions and 111 deletions
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30
src/include/utils/builtins.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.337 2009/08/03 21:11:39 joe Exp $
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.338 2009/08/04 16:08:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -138,6 +138,12 @@ extern Datum char_text(PG_FUNCTION_ARGS);
extern Datum domain_in(PG_FUNCTION_ARGS);
extern Datum domain_recv(PG_FUNCTION_ARGS);
/* encode.c */
extern Datum binary_encode(PG_FUNCTION_ARGS);
extern Datum binary_decode(PG_FUNCTION_ARGS);
extern unsigned hex_encode(const char *src, unsigned len, char *dst);
extern unsigned hex_decode(const char *src, unsigned len, char *dst);
/* enum.c */
extern Datum enum_in(PG_FUNCTION_ARGS);
extern Datum enum_out(PG_FUNCTION_ARGS);
@ -711,28 +717,6 @@ extern Datum unknownout(PG_FUNCTION_ARGS);
extern Datum unknownrecv(PG_FUNCTION_ARGS);
extern Datum unknownsend(PG_FUNCTION_ARGS);
extern Datum byteain(PG_FUNCTION_ARGS);
extern Datum byteaout(PG_FUNCTION_ARGS);
extern Datum bytearecv(PG_FUNCTION_ARGS);
extern Datum byteasend(PG_FUNCTION_ARGS);
extern Datum byteaoctetlen(PG_FUNCTION_ARGS);
extern Datum byteaGetByte(PG_FUNCTION_ARGS);
extern Datum byteaGetBit(PG_FUNCTION_ARGS);
extern Datum byteaSetByte(PG_FUNCTION_ARGS);
extern Datum byteaSetBit(PG_FUNCTION_ARGS);
extern Datum binary_encode(PG_FUNCTION_ARGS);
extern Datum binary_decode(PG_FUNCTION_ARGS);
extern Datum byteaeq(PG_FUNCTION_ARGS);
extern Datum byteane(PG_FUNCTION_ARGS);
extern Datum bytealt(PG_FUNCTION_ARGS);
extern Datum byteale(PG_FUNCTION_ARGS);
extern Datum byteagt(PG_FUNCTION_ARGS);
extern Datum byteage(PG_FUNCTION_ARGS);
extern Datum byteacmp(PG_FUNCTION_ARGS);
extern Datum byteacat(PG_FUNCTION_ARGS);
extern Datum byteapos(PG_FUNCTION_ARGS);
extern Datum bytea_substr(PG_FUNCTION_ARGS);
extern Datum bytea_substr_no_len(PG_FUNCTION_ARGS);
extern Datum pg_column_size(PG_FUNCTION_ARGS);
/* version.c */