Changeset: ac9358579737 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/ac9358579737
Modified Files:
clients/mapiclient/dump.c
Branch: Aug2024
Log Message:
Don't call sys.check_constraint on older servers.
diffs (91 lines):
diff --git a/clients/mapiclient/dump.c b/clients/mapiclient/dump.c
--- a/clients/mapiclient/dump.c
+++ b/clients/mapiclient/dump.c
@@ -452,6 +452,45 @@ bailout:
return false;
}
+static bool
+has_check_constraint(Mapi mid)
+{
+ MapiHdl hdl;
+ bool ret;
+ static int answer = -1;
+
+ if (answer >= 0)
+ return answer;
+
+ if ((hdl = mapi_query(mid,
+ "select id from sys.functions"
+ " where schema_id = 2000"
+ " and name =
'check_constraint'")) == NULL ||
+ mapi_error(mid))
+ goto bailout;
+ ret = mapi_get_row_count(hdl) == 1;
+ while ((mapi_fetch_row(hdl)) != 0) {
+ if (mapi_error(mid))
+ goto bailout;
+ }
+ if (mapi_error(mid))
+ goto bailout;
+ mapi_close_handle(hdl);
+ answer = ret;
+ return ret;
+
+bailout:
+ if (hdl) {
+ if (mapi_result_error(hdl))
+ mapi_explain_result(hdl, stderr);
+ else
+ mapi_explain_query(hdl, stderr);
+ mapi_close_handle(hdl);
+ } else
+ mapi_explain(mid, stderr);
+ return false;
+}
+
static int
dump_foreign_keys(Mapi mid, const char *schema, const char *tname, const char
*tid, stream *sqlf)
{
@@ -1114,6 +1153,7 @@ dump_column_definition(Mapi mid, stream
mapi_close_handle(hdl);
hdl = NULL;
+ const char *cc = has_check_constraint(mid) ? "case when k.type = 4 then
sys.check_constraint(s.name, k.name) else null end" : "cast(null as
varchar(10))";
if (tid)
snprintf(query, maxquerylen,
"SELECT kc.name, " /* 0 */
@@ -1121,13 +1161,13 @@ dump_column_definition(Mapi mid, stream
"k.name, " /* 2 */
"kc.id, " /* 3 */
"k.type, " /* 4 */
- "case when k.type = 4 then
sys.check_constraint(s.name, k.name) else null end " /* 5 */
+ "%s " /* 5 */
"FROM sys.objects kc, "
"sys.keys k "
"WHERE kc.id = k.id "
"AND k.table_id = %s "
"AND k.type = 1 "
- "ORDER BY kc.id, kc.nr", tid);
+ "ORDER BY kc.id, kc.nr", cc, tid);
else
snprintf(query, maxquerylen,
"SELECT kc.name, " /* 0 */
@@ -1135,7 +1175,7 @@ dump_column_definition(Mapi mid, stream
"k.name, " /* 2 */
"kc.id, " /* 3 */
"k.type, " /* 4 */
- "case when k.type = 4 then
sys.check_constraint(s.name, k.name) else null end " /* 5 */
+ "%s " /* 5 */
"FROM sys.objects kc, "
"sys.keys k, "
"sys.schemas s, "
@@ -1146,7 +1186,7 @@ dump_column_definition(Mapi mid, stream
"AND t.schema_id = s.id "
"AND s.name = '%s' "
"AND t.name = '%s' "
- "ORDER BY kc.id, kc.nr", s, t);
+ "ORDER BY kc.id, kc.nr", cc, s, t);
if ((hdl = mapi_query(mid, query)) == NULL || mapi_error(mid))
goto bailout;
cnt = 0;
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