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minor sql optimization

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git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@4346 57a11ea4-9604-0410-9ed3-97b8803252fd
This commit is contained in:
Linas Vepstas
2001-05-31 20:06:10 +00:00
parent 462499cf29
commit b07abffbcf
1 changed files with 19 additions and 0 deletions
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19
src/engine/sql/kvp-sql.c
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@@ -437,6 +437,7 @@ static gpointer
list_handler (PGBackend *be, PGresult *result, int j, gpointer data)
{
KVP_HANDLER_SETUP;
PERR ("not implemented");
// kv = kvp_value_new_glist ();
KVP_HANDLER_TAKEDOWN;
}
@@ -451,6 +452,14 @@ list_handler (PGBackend *be, PGresult *result, int j, gpointer data)
kf = pgendGetResults (be, TYPE##_handler, kf); \
}
static gpointer
count_handler (PGBackend *be, PGresult *result, int j, gpointer data)
{
int *cnt = (int *) data;
*cnt += atoi (DB_GET_VAL ("count", j));
return data;
}
kvp_frame *
pgendKVPFetch (PGBackend *be, const GUID *guid, kvp_frame *kf)
@@ -458,6 +467,7 @@ pgendKVPFetch (PGBackend *be, const GUID *guid, kvp_frame *kf)
char * p;
char iguid_str[40];
int iguid = 0;
int count = 0;
if (!be || !guid) return kf;
ENTER (" ");
@@ -470,6 +480,15 @@ pgendKVPFetch (PGBackend *be, const GUID *guid, kvp_frame *kf)
if (0 == iguid) return kf;
snprintf (iguid_str, 40, "%d;", iguid);
/* save on some sql queries by avoiding kvp data fetches when
* tehre is no data */
p = be->buff; *p = 0;
p = stpcpy (p, "SELECT count(*) FROM gncKVPValue WHERE iguid=");
p = stpcpy (p, iguid_str);
SEND_QUERY (be,be->buff, kf);
pgendGetResults (be, count_handler, &count);
if (0 == count) return kf;
/* now troll the individual tables for data */
GET_KVP(int64);
GET_KVP(dbl);