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Add get_bit/set_bit functions for bit strings, paralleling those for bytea,

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and implement OVERLAY() for bit strings and bytea.

In passing also convert text OVERLAY() to a true built-in, instead of
relying on a SQL function.

Leonardo F, reviewed by Kevin Grittner
This commit is contained in:
Tom Lane
2010-01-25 20:55:32 +00:00
parent 1d1f425f8d
commit 9507c8a1db
13 changed files with 554 additions and 93 deletions
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4
src/include/utils/builtins.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.344 2010/01/19 05:50:18 tgl Exp $
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.345 2010/01/25 20:55:32 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -698,6 +698,8 @@ extern Datum textoctetlen(PG_FUNCTION_ARGS);
extern Datum textpos(PG_FUNCTION_ARGS);
extern Datum text_substr(PG_FUNCTION_ARGS);
extern Datum text_substr_no_len(PG_FUNCTION_ARGS);
extern Datum textoverlay(PG_FUNCTION_ARGS);
extern Datum textoverlay_no_len(PG_FUNCTION_ARGS);
extern Datum name_text(PG_FUNCTION_ARGS);
extern Datum text_name(PG_FUNCTION_ARGS);
extern int varstr_cmp(char *arg1, int len1, char *arg2, int len2);