diff --git a/README.md b/README.md
index e197d27..0111461 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ Nacos 从 2.2.0 版本开始,可通过 SPI 机制注入多数据源实现插件,
 |---------------|-------|
 | 2.2.0 - 2.3.0 | 0.0.2 |
 | 2.3.1 - 2.3.2 | 0.0.3 |
+| 2.4.0 - 2.4.1 | 0.0.4 |
 
 ```xml
 <dependency>
diff --git a/pom.xml b/pom.xml
index 76042ef..40fb1dc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
     </parent>
     <groupId>com.pig4cloud.plugin</groupId>
     <artifactId>nacos-datasource-plugin-pg</artifactId>
-    <version>0.0.3</version>
+    <version>0.0.4</version>
     <name>nacos-datasource-plugin-pg</name>
     <description>nacos-datasource-plugin-pg</description>
     <url>https://pig4cloud.com</url>
@@ -23,7 +23,7 @@
     </licenses>
 
     <properties>
-        <nacos.version>2.3.2</nacos.version>
+        <nacos.version>2.4.1</nacos.version>
         <spring.checkstyle.plugin>0.0.32</spring.checkstyle.plugin>
         <maven.compiler.version>3.8.1</maven.compiler.version>
         <maven.compiler.source>1.8</maven.compiler.source>
diff --git a/src/main/java/com/pig4cloud/plugin/impl/postgresql/PostgresqlAbstractMapper.java b/src/main/java/com/pig4cloud/plugin/impl/postgresql/PostgresqlAbstractMapper.java
index 5fbfa84..30170f9 100644
--- a/src/main/java/com/pig4cloud/plugin/impl/postgresql/PostgresqlAbstractMapper.java
+++ b/src/main/java/com/pig4cloud/plugin/impl/postgresql/PostgresqlAbstractMapper.java
@@ -152,4 +152,14 @@ public String count(List<String> where) {
 		return sql.toString();
 	}
 
+	/**
+	 * Get function by functionName.
+	 * @param functionName functionName
+	 * @return function
+	 */
+	@Override
+	public String getFunction(String functionName) {
+		return TrustedPgFunctionEnum.getFunctionByName(functionName);
+	}
+
 }
diff --git a/src/main/java/com/pig4cloud/plugin/impl/postgresql/TrustedPgFunctionEnum.java b/src/main/java/com/pig4cloud/plugin/impl/postgresql/TrustedPgFunctionEnum.java
new file mode 100644
index 0000000..6cece35
--- /dev/null
+++ b/src/main/java/com/pig4cloud/plugin/impl/postgresql/TrustedPgFunctionEnum.java
@@ -0,0 +1,47 @@
+package com.pig4cloud.plugin.impl.postgresql;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * @author lengleng
+ * @date 2024/8/25
+ */
+public enum TrustedPgFunctionEnum {
+
+	/**
+	 * NOW().
+	 */
+	NOW("NOW()", "NOW()");
+
+	private static final Map<String, TrustedPgFunctionEnum> LOOKUP_MAP = new HashMap<>();
+
+	static {
+		for (TrustedPgFunctionEnum entry : TrustedPgFunctionEnum.values()) {
+			LOOKUP_MAP.put(entry.functionName, entry);
+		}
+	}
+
+	private final String functionName;
+
+	private final String function;
+
+	TrustedPgFunctionEnum(String functionName, String function) {
+		this.functionName = functionName;
+		this.function = function;
+	}
+
+	/**
+	 * Get the function name.
+	 * @param functionName function name
+	 * @return function
+	 */
+	public static String getFunctionByName(String functionName) {
+		TrustedPgFunctionEnum entry = LOOKUP_MAP.get(functionName);
+		if (entry != null) {
+			return entry.function;
+		}
+		throw new IllegalArgumentException(String.format("Invalid function name: %s", functionName));
+	}
+
+}