refactor(plugin-postgresql): drop the redundant public entry when public is the selected schema

Author: datlechin

Plugins/PostgreSQLDriverPlugin/PostgreSQLSchemaQueries.swift

@@ -77,7 +77,10 @@ enum PostgreSQLSchemaQueries {
     }
 
     static func setSearchPath(toSchema schema: String) -> String {
-        let quotedIdentifier = schema.replacingOccurrences(of: "\"", with: "\"\"")
-        return "SET search_path TO \"\(quotedIdentifier)\", public"
+        let quotedIdentifier = "\"\(schema.replacingOccurrences(of: "\"", with: "\"\""))\""
+        guard schema != "public" else {
+            return "SET search_path TO \(quotedIdentifier)"
+        }
+        return "SET search_path TO \(quotedIdentifier), public"
     }
 }

TableProTests/Plugins/PostgreSQLSearchPathTests.swift

@@ -16,6 +16,14 @@ struct PostgreSQLSearchPathTests {
         )
     }
 
+    @Test("omits the redundant public fallback when public is the selected schema")
+    func publicSchema() {
+        #expect(
+            PostgreSQLSchemaQueries.setSearchPath(toSchema: "public")
+                == "SET search_path TO \"public\""
+        )
+    }
+
     @Test("preserves mixed-case schema names with identifier quoting")
     func mixedCaseSchema() {
         #expect(