diff --git a/src/libmdb/backend.c b/src/libmdb/backend.c
index 12ffe3e..44667e1 100644
--- a/src/libmdb/backend.c
+++ b/src/libmdb/backend.c
@@ -270,6 +270,11 @@ quote_with_squotes(const gchar* value)
 	return quote_generic(value, '\'', '\'');
 }
 
+static int mdb_col_is_shortdate(const MdbColumn *col) {
+    const char *format = mdb_col_get_prop(col, "Format");
+    return format && !strcmp(format, "Short Date");
+}
+
 MDB_DEPRECATED(char*,
 mdb_get_coltype_string(MdbBackend *backend, int col_type))
 {
@@ -299,7 +304,6 @@ mdb_coltype_takes_length(MdbBackend *backend, int col_type))
 	return backend->types_table[col_type].needs_length;
 }
 
-
 const MdbBackendType*
 mdb_get_colbacktype(const MdbColumn *col) {
 	MdbBackend *backend = col->table->entry->mdb->default_backend;
@@ -309,8 +313,7 @@ mdb_get_colbacktype(const MdbColumn *col) {
 	if (col_type == MDB_LONGINT && col->is_long_auto && backend->type_autonum)
 		return backend->type_autonum;
 	if (col_type == MDB_DATETIME && backend->type_shortdate) {
-		const char *format = mdb_col_get_prop(col, "Format");
-		if (format && !strcmp(format, "Short Date"))
+		if (mdb_col_is_shortdate(col))
 			return backend->type_shortdate;
 	}
 	return &backend->types_table[col_type];
@@ -841,7 +844,7 @@ generate_table_schema(FILE *outfile, MdbCatalogEntry *entry, char *dbnamespace,
 					else if (!strcmp(defval, "No"))
 						fputs("FALSE", outfile);
 					else if (!g_ascii_strcasecmp(defval, "date()")) {
-						if (!strcmp(mdb_col_get_prop(col, "Format"), "Short Date"))
+						if (mdb_col_is_shortdate(col))
 							fputs(mdb->default_backend->short_now, outfile);
 						else
 							fputs(mdb->default_backend->long_now, outfile);
diff --git a/src/libmdb/table.c b/src/libmdb/table.c
index da64e50..d10b2af 100644
--- a/src/libmdb/table.c
+++ b/src/libmdb/table.c
@@ -33,15 +33,6 @@ static gint mdb_col_comparer(MdbColumn **a, MdbColumn **b)
 		return 0;
 }
 
-unsigned char mdb_col_needs_size(int col_type)
-{
-	if (col_type == MDB_TEXT) {
-		return TRUE;
-	} else {
-		return FALSE;
-	}
-}
-
 MdbTableDef *mdb_alloc_tabledef(MdbCatalogEntry *entry)
 {
 	MdbTableDef *table;
diff --git a/src/odbc/odbc.c b/src/odbc/odbc.c
index 444ddee..7e5f988 100644
--- a/src/odbc/odbc.c
+++ b/src/odbc/odbc.c
@@ -950,6 +950,9 @@ static SQLRETURN SQL_API _SQLColAttributes(
 					break;
 			}
 			break;
+        case SQL_DESC_UPDATABLE:
+            *pfDesc = SQL_ATTR_READONLY;
+            break;
 		default:
 			strcpy(sqlState, "HYC00"); // 	Driver not capable
 			ret = SQL_ERROR;
diff --git a/src/util/mdb-export.c b/src/util/mdb-export.c
index 58ac948..4f905a9 100755
--- a/src/util/mdb-export.c
+++ b/src/util/mdb-export.c
@@ -138,7 +138,9 @@ main(int argc, char **argv)
 	/* Process options */
 	if (quote_char)
 		quote_char = escapes(quote_char);
-	else
+    else if (insert_dialect && !strcmp(insert_dialect, "postgres"))
+        quote_char = g_strdup("'");
+    else
 		quote_char = g_strdup("\"");
 
 	if (delimiter)