diff --git a/gen/pom.xml b/gen/pom.xml
index 4997474e0e27e2111ebcbb93a1879735d1b03be3..51a2bb8519cd2de52bfdb46a22e1ff6b00cec6b4 100644
--- a/gen/pom.xml
+++ b/gen/pom.xml
@@ -51,7 +51,7 @@
         <dependency>
             <groupId>org.xerial</groupId>
             <artifactId>sqlite-jdbc</artifactId>
-            <version>3.21.0.1</version>
+            <version>3.34.0</version>
         </dependency>
         <dependency>
             <groupId>mysql</groupId>
diff --git a/gen/src/main/java/com/gitee/gen/gen/oracle/OracleColumnSelector.java b/gen/src/main/java/com/gitee/gen/gen/oracle/OracleColumnSelector.java
index d43a9cc3d10da52790a75c3bccd827a22e4d164f..3092bac938f89df93163cb8ef567c438efa026ab 100644
--- a/gen/src/main/java/com/gitee/gen/gen/oracle/OracleColumnSelector.java
+++ b/gen/src/main/java/com/gitee/gen/gen/oracle/OracleColumnSelector.java
@@ -40,7 +40,7 @@ public class OracleColumnSelector extends ColumnSelector {
 
 	private static final String COLUMN_SQL = " SELECT " +
 			" atc.COLUMN_NAME FIELD, atc.DATA_TYPE TYPE, atc.DATA_SCALE SCALE, atc.DATA_LENGTH MAXLENGTH, " +
-			" CASE atc.NULLABLE NULLABLE , " +
+			" atc.NULLABLE NULLABLE , " +
 			" atc.DATA_DEFAULT 默认值, acc.COMMENTS COMMENTS, atc.TABLE_NAME 表名, " +
 			" CASE atc.COLUMN_NAME " +
 			" WHEN " +
@@ -48,7 +48,7 @@ public class OracleColumnSelector extends ColumnSelector {
 			"	LEFT JOIN all_cons_columns col ON con.table_name = col.table_name " +
 			"	AND con.OWNER = col.OWNER AND con.CONSTRAINT_NAME = col.CONSTRAINT_NAME " +
 			"   WHERE con.constraint_type = 'P' " +
-			"	AND col.table_name = '%s' AND con.OWNER = '%s' ) " +
+			"	AND col.table_name = '%s' AND con.OWNER = '%s' AND col.column_name = atc.COLUMN_NAME ) " +
 			" THEN 'true' ELSE 'false' END AS KEY " +
 			" FROM ALL_TAB_COLUMNS atc " +
 			" LEFT JOIN ALL_COL_COMMENTS acc " +