diff --git a/druid-udf/src/main/java/org/apache/druid/query/udf/UdfModule.java b/druid-udf/src/main/java/org/apache/druid/query/udf/UdfModule.java
index d09e02a..51248c4 100644
--- a/druid-udf/src/main/java/org/apache/druid/query/udf/UdfModule.java
+++ b/druid-udf/src/main/java/org/apache/druid/query/udf/UdfModule.java
@@ -3,7 +3,9 @@ package org.apache.druid.query.udf;
 import com.google.inject.Binder;
 import org.apache.druid.guice.ExpressionModule;
 import org.apache.druid.initialization.DruidModule;
+import org.apache.druid.query.udf.expressions.CurrentTimestampMillisExprMacro;
 import org.apache.druid.query.udf.expressions.DimensionBucketExprMacro;
+import org.apache.druid.query.udf.sql.CurrentTimestampMillisOperatorConversion;
 import org.apache.druid.query.udf.sql.DimensionBucketOperatorConversion;
 import org.apache.druid.sql.guice.SqlBindings;
 
@@ -11,7 +13,9 @@ public class UdfModule implements DruidModule {
     @Override
     public void configure(Binder binder) {
         SqlBindings.addOperatorConversion(binder, DimensionBucketOperatorConversion.class);
+        SqlBindings.addOperatorConversion(binder, CurrentTimestampMillisOperatorConversion.class);
         ExpressionModule.addExprMacro(binder, DimensionBucketExprMacro.class);
+        ExpressionModule.addExprMacro(binder, CurrentTimestampMillisExprMacro.class);
     }
 
     /*@Override
diff --git a/druid-udf/src/main/java/org/apache/druid/query/udf/expressions/CurrentTimestampMillisExprMacro.java b/druid-udf/src/main/java/org/apache/druid/query/udf/expressions/CurrentTimestampMillisExprMacro.java
new file mode 100644
index 0000000..9535223
--- /dev/null
+++ b/druid-udf/src/main/java/org/apache/druid/query/udf/expressions/CurrentTimestampMillisExprMacro.java
@@ -0,0 +1,57 @@
+package org.apache.druid.query.udf.expressions;
+
+import org.apache.druid.math.expr.*;
+
+import javax.annotation.Nullable;
+import java.util.List;
+
+public class CurrentTimestampMillisExprMacro implements ExprMacroTable.ExprMacro {
+    private static final String NAME = "current_timestamp_millis"; // current_timestamp_millis
+
+    @Override
+    public String name() {
+        return NAME;
+    }
+
+    @Override
+    public Expr apply(List<Expr> args) {
+        validationHelperCheckArgumentCount(args, 0);
+
+        class CurrentTimestampMillisExpr implements Expr {
+
+            @Override
+            public ExprEval eval(ObjectBinding bindings) {
+                return ExprEval.of(System.currentTimeMillis());
+            }
+
+            @Override
+            public String stringify() {
+                return "current_timestamp_millis";
+            }
+
+            @Override
+            public Expr visit(Shuttle shuttle) {
+                return shuttle.visit(this);
+            }
+
+            @Override
+            public BindingAnalysis analyzeInputs() {
+                return BindingAnalysis.EMTPY;
+            }
+
+            @Nullable
+            @Override
+            public ExpressionType getOutputType(InputBindingInspector inspector) {
+                return ExpressionType.LONG;
+            }
+
+            @Override
+            public boolean canVectorize(InputBindingInspector inspector) {
+                return false;
+            }
+        }
+
+        return new CurrentTimestampMillisExpr();
+    }
+
+}
diff --git a/druid-udf/src/main/java/org/apache/druid/query/udf/sql/CurrentTimestampMillisOperatorConversion.java b/druid-udf/src/main/java/org/apache/druid/query/udf/sql/CurrentTimestampMillisOperatorConversion.java
new file mode 100644
index 0000000..f75f5c7
--- /dev/null
+++ b/druid-udf/src/main/java/org/apache/druid/query/udf/sql/CurrentTimestampMillisOperatorConversion.java
@@ -0,0 +1,35 @@
+package org.apache.druid.query.udf.sql;
+
+import org.apache.calcite.rex.RexNode;
+import org.apache.calcite.sql.SqlFunction;
+import org.apache.calcite.sql.SqlFunctionCategory;
+import org.apache.calcite.sql.SqlOperator;
+import org.apache.calcite.sql.type.*;
+import org.apache.druid.segment.column.RowSignature;
+import org.apache.druid.sql.calcite.expression.DruidExpression;
+import org.apache.druid.sql.calcite.expression.OperatorConversions;
+import org.apache.druid.sql.calcite.expression.SqlOperatorConversion;
+import org.apache.druid.sql.calcite.planner.PlannerContext;
+
+import javax.annotation.Nullable;
+
+public class CurrentTimestampMillisOperatorConversion implements SqlOperatorConversion {
+    private static final SqlFunction SQL_FUNCTION = OperatorConversions
+            .operatorBuilder("CURRENT_TIMESTAMP_MILLIS")
+            .operandTypes(SqlTypeFamily.ANY)
+            .requiredOperands(0)
+            .returnTypeNonNull(SqlTypeName.BIGINT)
+            .functionCategory(SqlFunctionCategory.USER_DEFINED_FUNCTION)
+            .build();
+
+    @Override
+    public SqlOperator calciteOperator() {
+        return SQL_FUNCTION;
+    }
+
+    @Nullable
+    @Override
+    public DruidExpression toDruidExpression(PlannerContext plannerContext, RowSignature rowSignature, RexNode rexNode) {
+        return OperatorConversions.convertDirectCall(plannerContext, rowSignature, rexNode, "current_timestamp_millis");
+    }
+}
diff --git a/druid-udf/src/test/java/org/apache/druid/query/udf/expressions/CurrentTimestampMillisExprTest.java b/druid-udf/src/test/java/org/apache/druid/query/udf/expressions/CurrentTimestampMillisExprTest.java
new file mode 100644
index 0000000..db83dd9
--- /dev/null
+++ b/druid-udf/src/test/java/org/apache/druid/query/udf/expressions/CurrentTimestampMillisExprTest.java
@@ -0,0 +1,148 @@
+package org.apache.druid.query.udf.expressions;
+
+import com.google.common.collect.ImmutableMap;
+import org.apache.druid.math.expr.*;
+import org.apache.druid.testing.InitializedNullHandlingTest;
+import org.junit.Test;
+
+import java.util.Collections;
+
+public class CurrentTimestampMillisExprTest extends InitializedNullHandlingTest {
+    private final ExprMacroTable exprMacroTable = new ExprMacroTable(Collections.singletonList(new CurrentTimestampMillisExprMacro()));
+    Expr.ObjectBinding inputBindings = InputBindings.forInputSuppliers(
+            new ImmutableMap.Builder<String, InputBindings.InputSupplier>()
+                    .put("string", InputBindings.inputSupplier(ExpressionType.STRING, () -> "abcdef"))
+                    .put("long", InputBindings.inputSupplier(ExpressionType.LONG, () -> 1234L))
+                    .put("double", InputBindings.inputSupplier(ExpressionType.DOUBLE, () -> 1.234))
+                    .put("array1", InputBindings.inputSupplier(ExpressionType.STRING_ARRAY, () -> new Object[]{"1", "2", "3"}))
+                    .put("array2", InputBindings.inputSupplier(ExpressionType.STRING_ARRAY, () -> new String[]{"1", "2", "3"}))
+                    .put("nullString", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                    .put("nullLong", InputBindings.inputSupplier(ExpressionType.LONG, () -> null))
+                    .put("nullDouble", InputBindings.inputSupplier(ExpressionType.DOUBLE, () -> null))
+                    .build()
+    );
+
+    Expr.ObjectBinding[] inputBindingArray = new Expr.ObjectBinding[]{
+            InputBindings.forInputSuppliers(
+                    new ImmutableMap.Builder<String, InputBindings.InputSupplier>()
+                            .put("device_id", InputBindings.inputSupplier(ExpressionType.STRING, () -> "1"))
+                            .put("rule_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 81))
+                            .put("template_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 81))
+                            .put("chart_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 81))
+                            .put("version", InputBindings.inputSupplier(ExpressionType.LONG, () -> 1))
+                            .put("client_ip_object", InputBindings.inputSupplier(ExpressionType.STRING_ARRAY, () -> null))
+                            .put("server_ip_object", InputBindings.inputSupplier(ExpressionType.STRING_ARRAY, () -> null))
+                            .put("fqdn_category", InputBindings.inputSupplier(ExpressionType.STRING_ARRAY, () -> null))
+                            .put("client_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_fqdn", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_domain", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("application", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .build()
+            ),
+            InputBindings.forInputSuppliers(
+                    new ImmutableMap.Builder<String, InputBindings.InputSupplier>()
+                            .put("device_id", InputBindings.inputSupplier(ExpressionType.STRING, () -> "1"))
+                            .put("rule_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 101))
+                            .put("template_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 101))
+                            .put("chart_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 101))
+                            .put("version", InputBindings.inputSupplier(ExpressionType.LONG, () -> 1))
+                            .put("client_ip_object", InputBindings.inputSupplier(ExpressionType.STRING_ARRAY, () -> new Object[]{"5","7","8"}))
+                            .put("server_ip_object", InputBindings.inputSupplier(ExpressionType.STRING_ARRAY, () -> null))
+                            .put("fqdn_category", InputBindings.inputSupplier(ExpressionType.STRING_ARRAY, () -> null))
+                            .put("client_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_fqdn", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_domain", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("application", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .build()
+            ),
+            InputBindings.forInputSuppliers(
+                    new ImmutableMap.Builder<String, InputBindings.InputSupplier>()
+                            .put("device_id", InputBindings.inputSupplier(ExpressionType.STRING, () -> "1"))
+                            .put("rule_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 271L))
+                            .put("template_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 271L))
+                            .put("chart_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 271L))
+                            .put("version", InputBindings.inputSupplier(ExpressionType.LONG, () -> 1L))
+                            .put("client_ip_object", InputBindings.inputSupplier(ExpressionType.STRING_ARRAY, () -> null))
+                            .put("server_ip_object", InputBindings.inputSupplier(ExpressionType.STRING_ARRAY, () -> null))
+                            .put("fqdn_category", InputBindings.inputSupplier(ExpressionType.STRING_ARRAY, () -> null))
+                            .put("client_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> "5.245.228.51"))
+                            .put("server_fqdn", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_domain", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("application", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .build()
+            ),
+            // ...
+            InputBindings.forInputSuppliers(
+                    new ImmutableMap.Builder<String, InputBindings.InputSupplier>()
+                            .put("device_id", InputBindings.inputSupplier(ExpressionType.STRING, () -> "1"))
+                            .put("rule_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 81))
+                            .put("template_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 81))
+                            .put("chart_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 81))
+                            .put("version", InputBindings.inputSupplier(ExpressionType.LONG, () -> 1))
+                            .put("client_ip_object", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_ip_object", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("fqdn_category", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("client_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_fqdn", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_domain", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("application", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .build()
+            ),
+            InputBindings.forInputSuppliers(
+                    new ImmutableMap.Builder<String, InputBindings.InputSupplier>()
+                            .put("device_id", InputBindings.inputSupplier(ExpressionType.STRING, () -> "1"))
+                            .put("rule_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 101))
+                            .put("template_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 101))
+                            .put("chart_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 101))
+                            .put("version", InputBindings.inputSupplier(ExpressionType.LONG, () -> 1))
+                            .put("client_ip_object", InputBindings.inputSupplier(ExpressionType.STRING, () -> "5,7,8"))
+                            .put("server_ip_object", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("fqdn_category", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("client_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_fqdn", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_domain", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("application", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .build()
+            ),
+            InputBindings.forInputSuppliers(
+                    new ImmutableMap.Builder<String, InputBindings.InputSupplier>()
+                            .put("device_id", InputBindings.inputSupplier(ExpressionType.STRING, () -> "1"))
+                            .put("rule_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 271L))
+                            .put("template_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 271L))
+                            .put("chart_id", InputBindings.inputSupplier(ExpressionType.LONG, () -> 271L))
+                            .put("version", InputBindings.inputSupplier(ExpressionType.LONG, () -> 1L))
+                            .put("client_ip_object", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_ip_object", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("fqdn_category", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("client_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_ip", InputBindings.inputSupplier(ExpressionType.STRING, () -> "5.245.228.51"))
+                            .put("server_fqdn", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("server_domain", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .put("application", InputBindings.inputSupplier(ExpressionType.STRING, () -> null))
+                            .build()
+            ),
+    };
+
+    @Test
+    public void test() throws Exception{
+        Expr expr = Parser.parse("current_timestamp_millis()", exprMacroTable);
+        System.out.println(expr.analyzeInputs().getRequiredBindings());
+        ExprEval eval = expr.eval(inputBindings);
+        System.out.println(eval.value());
+        Thread.sleep(1000);
+        eval = expr.eval(inputBindings);
+        System.out.println(eval.value());
+        Thread.sleep(1000);
+        expr = Parser.parse("current_timestamp_millis()", exprMacroTable);
+        eval = expr.eval(inputBindings);
+        System.out.println(eval.value());
+
+    }
+
+
+}