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The "Allow easy display of usernames in a group (pg_hba.conf uses groups

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now)" item on the open items, and subsequent plpgsql function I sent in,
made me realize it was too hard to get the upper and lower bound of an
array. The attached creates two functions that I think will be very
useful when combined with the ability of plpgsql to return sets.

array_lower(array, dim_num)
- and -
array_upper(array, dim_num)

They return the value (as an int) of the upper and lower bound of the
requested dim in the provided array.

Joe Conway
This commit is contained in:
Bruce Momjian
2002-11-08 17:27:03 +00:00
parent 7eb2b4b270
commit fef731d1c4
4 changed files with 70 additions and 5 deletions
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4
src/include/utils/array.h
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@ -10,7 +10,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: array.h,v 1.35 2002/09/18 21:35:24 tgl Exp $
* $Id: array.h,v 1.36 2002/11/08 17:27:03 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -85,6 +85,8 @@ extern Datum array_out(PG_FUNCTION_ARGS);
extern Datum array_length_coerce(PG_FUNCTION_ARGS);
extern Datum array_eq(PG_FUNCTION_ARGS);
extern Datum array_dims(PG_FUNCTION_ARGS);
extern Datum array_lower(PG_FUNCTION_ARGS);
extern Datum array_upper(PG_FUNCTION_ARGS);
extern Datum array_ref(ArrayType *array, int nSubscripts, int *indx,
int arraylen, int elmlen, bool elmbyval, char elmalign,