diff --git a/README.md b/README.md
index 7feaa39..64ee277 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 
 ## Feature
 
-- Generate code for database table, column and association.
+- Generate code for table, column and association from database or ddl.
 - Incremental compile for dto language (apt/ksp).
 - Add implementation (spring-boot-start/sql/sql-kotlin) for dependencies.
 - Add annotationProcessor/ksp for dependencies.
@@ -98,6 +98,8 @@ jimmer {
 ![Static Badge](https://img.shields.io/badge/-MariaDB-gray?style=flat-square&logo=mariadb&logoColor=white)
 ![Static Badge](https://img.shields.io/badge/-MySQL-gray?style=flat-square&logo=mysql&logoColor=white)
 
+### From Database
+
 ```kotlin
 import cn.enaium.jimmer.gradle.extension.Association
 import cn.enaium.jimmer.gradle.extension.Driver
@@ -109,7 +111,7 @@ plugins {
 
 dependencies {
     //...
-    implementation("org.postgresql:postgresql:42.6.0")//require jdbc driver
+    runtimeOnly("org.postgresql:postgresql:42.6.0")//require jdbc driver
 }
 
 jimmer {
@@ -123,7 +125,6 @@ jimmer {
             url.set("jdbc:postgresql://localhost:5432/postgres")
             username.set("postgres")
             password.set("postgres")
-//            ddl.set(file("src/main/resources/schema.sql"))// if you set ddl, driver, url, username, password can be ignored
 //            catalog.set("postgres")
 //            schemaPattern.set("public")
 //            tableNamePattern.set("t_%")
@@ -143,6 +144,22 @@ jimmer {
 }
 ```
 
+### From DDL
+
+```kotlin
+jimmer {
+    generator {
+        target {
+            srcDir.set("src/main/kotlin")
+            packageName.set("cn.enaium")
+        }
+        jdbc {
+            ddl.set(file("src/main/resources/schema.sql"))
+        }
+    }
+}
+```
+
 ### Association(Only Gradle Project Plugin)
 
 You must add the suffix '_id'(`primaryKey.set("id")`) to the column name if the column is a fake foreign key, otherwise
diff --git a/gradle.properties b/gradle.properties
index 9e780aa..a0181c2 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,2 +1,2 @@
 kotlin.code.style=official
-version=0.0.26
\ No newline at end of file
+version=0.0.27
\ No newline at end of file
diff --git a/src/main/kotlin/cn/enaium/jimmer/gradle/extension/Driver.kt b/src/main/kotlin/cn/enaium/jimmer/gradle/extension/Driver.kt
index f57ac19..4f95159 100644
--- a/src/main/kotlin/cn/enaium/jimmer/gradle/extension/Driver.kt
+++ b/src/main/kotlin/cn/enaium/jimmer/gradle/extension/Driver.kt
@@ -28,5 +28,5 @@ enum class Driver(val className: String, val module: String) {
     HYPERSONIC("org.hsqldb.jdbc.JDBCDriver", "hsqldb"),
     ORACLE("oracle.jdbc.driver.OracleDriver", "ojdbc"),
     DB2("com.ibm.db2.jcc.DB2Driver", "jcc"),
-    SQL_SERVER("com.microsoft.sqlserver.jdbc.SQLServerDriver", "mssql-jdbc"),
+    SQLSERVER("com.microsoft.sqlserver.jdbc.SQLServerDriver", "mssql-jdbc"),
 }
\ No newline at end of file
diff --git a/src/main/kotlin/cn/enaium/jimmer/gradle/task/GenerateEntityTask.kt b/src/main/kotlin/cn/enaium/jimmer/gradle/task/GenerateEntityTask.kt
index ace0b24..2c7141c 100644
--- a/src/main/kotlin/cn/enaium/jimmer/gradle/task/GenerateEntityTask.kt
+++ b/src/main/kotlin/cn/enaium/jimmer/gradle/task/GenerateEntityTask.kt
@@ -56,23 +56,28 @@ open class GenerateEntityTask : DefaultTask() {
             javaTypeMappings.putAll(generator.table.typeMappings.get())
         }
 
-        val driver =
-            generator.jdbc.driver.takeIf { it.isPresent }?.get() ?: throw RuntimeException("Driver not configured")
-        configurations.named("runtimeClasspath").get()
-            .find { file -> file.name.startsWith(driver.module) }
-            ?.also {
-                DriverManager.registerDriver(
-                    DiverWrapper(
-                        Class.forName(
-                            driver.className, true,
-                            URLClassLoader(arrayOf(it.toURI().toURL()), this.javaClass.classLoader)
-                        ).getConstructor()
-                            .newInstance() as Driver
+        generator.jdbc.driver.takeIf { it.isPresent }?.also driver@{ driver ->
+            configurations.named("runtimeClasspath").get()
+                .find { file -> file.name.startsWith(driver.get().module) }
+                ?.also {
+                    generator.jdbc.ddl.isPresent && return@also
+                    DriverManager.registerDriver(
+                        DiverWrapper(
+                            Class.forName(
+                                driver.get().className, true,
+                                URLClassLoader(arrayOf(it.toURI().toURL()), this.javaClass.classLoader)
+                            ).getConstructor()
+                                .newInstance() as Driver
+                        )
                     )
-                )
-            } ?: run {
+                } ?: run {
+                if (!generator.jdbc.ddl.isPresent) {
+                    throw RuntimeException("Failed to find driver module")
+                }
+            }
+        } ?: run {
             if (!generator.jdbc.ddl.isPresent) {
-                throw RuntimeException("Failed to find driver module")
+                throw RuntimeException("Driver not configured")
             }
         }
         if (extension.language.get() == Language.KOTLIN) {