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Commit of a *MAJOR* patch from Dan McGuirk <djm@indirect.com>

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Changes:

        * Unique index capability works using the syntax 'create unique
          index'.

        * Duplicate OID's in the system tables are removed.  I put
          little scripts called 'duplicate_oids' and 'find_oid' in
          include/catalog that help to find and remove duplicate OID's.
          I also moved 'unused_oids' from backend/catalog to
          include/catalog, since it has to be in the same directory
          as the include files in order to work.

        * The backend tries converting the name of a function or aggregate
          to all lowercase if the original name given doesn't work (mostly
          for compatibility with ODBC).

        * You can 'SELECT NULL' to your heart's content.

        * I put my _bt_updateitem fix in instead, which uses
          _bt_insertonpg so that even if the new key is so big that
          the page has to be split, everything still works.

        * All literal references to system catalog OID's have been
          replaced with references to define'd constants from the catalog
          header files.

        * I added a couple of node copy functions.  I think this was a
          preliminary attempt to get rules to work.
This commit is contained in:
Marc G. Fournier
1996-11-13 20:56:15 +00:00
parent 0cec8fe26c
commit 07a65b2255
45 changed files with 861 additions and 588 deletions
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50
src/backend/parser/analyze.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.14 1996/11/10 03:01:10 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.15 1996/11/13 20:48:55 scrappy Exp $
*
*-------------------------------------------------------------------------
*/
@@ -77,6 +77,9 @@ static void AddAggToParseState(ParseState *pstate, Aggreg *aggreg);
static void finalizeAggregates(ParseState *pstate, Query *qry);
static void parseCheckAggregates(ParseState *pstate, Query *qry);
static bool is_lowercase(char *string);
static void make_lowercase(char *string);
/*****************************************************************************
*
*****************************************************************************/
@@ -1869,6 +1872,30 @@ ParseComplexProjection(ParseState *pstate,
return NULL;
}
static bool is_lowercase(char *string)
{
int i;
for(i = 0; i < strlen(string); i++) {
if(string[i] >= 'A' && string[i] <= 'Z') {
return false;
}
}
return true;
}
static void make_lowercase(char *string)
{
int i;
for(i = 0; i < strlen(string); i++) {
if(string[i] >= 'A' && string[i] <= 'Z') {
string[i] = (string[i] - 'A') + 'a';
}
}
}
static Node *
ParseFunc(ParseState *pstate, char *funcname, List *fargs, int *curr_resno)
{
@@ -1987,6 +2014,27 @@ ParseFunc(ParseState *pstate, char *funcname, List *fargs, int *curr_resno)
AddAggToParseState(pstate, aggreg);
return (Node*)aggreg;
} else {
/* try one more time with lowercase --djm 8/17/96 */
if(!is_lowercase(funcname)) {
char *lowercase_funcname = strdup(funcname);
make_lowercase(lowercase_funcname);
if (strcmp(lowercase_funcname, "count") == 0)
basetype = 0;
else
basetype = exprType(lfirst(fargs));
if (SearchSysCacheTuple(AGGNAME,
PointerGetDatum(lowercase_funcname),
ObjectIdGetDatum(basetype),
0, 0)) {
Aggreg *aggreg = ParseAgg(lowercase_funcname,
basetype, lfirst(fargs));
AddAggToParseState(pstate, aggreg);
return (Node*)aggreg;
}
}
}
}
}