diff --git a/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/schema/model/ShardingSphereTable.java b/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/schema/model/ShardingSphereTable.java
index 4fc8165200d15..25ec5d33a0ad4 100644
--- a/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/schema/model/ShardingSphereTable.java
+++ b/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/schema/model/ShardingSphereTable.java
@@ -47,7 +47,7 @@ public final class ShardingSphereTable {
     @Getter(AccessLevel.NONE)
     private final Map<ShardingSphereIdentifier, ShardingSphereColumn> columns;
     
-    private final List<String> columnNames = new ArrayList<>();
+    private final List<ShardingSphereIdentifier> columnNames = new ArrayList<>();
     
     private final List<String> primaryKeyColumns = new ArrayList<>();
     
@@ -81,8 +81,9 @@ private Map<ShardingSphereIdentifier, ShardingSphereColumn> createColumns(final
         Map<ShardingSphereIdentifier, ShardingSphereColumn> result = new LinkedHashMap<>(columns.size(), 1F);
         int index = 0;
         for (ShardingSphereColumn each : columns) {
-            result.put(new ShardingSphereIdentifier(each.getName()), each);
-            columnNames.add(each.getName());
+            ShardingSphereIdentifier columnName = new ShardingSphereIdentifier(each.getName());
+            result.put(columnName, each);
+            columnNames.add(columnName);
             if (each.isPrimaryKey()) {
                 primaryKeyColumns.add(each.getName());
             }
diff --git a/proxy/frontend/type/mysql/src/main/java/org/apache/shardingsphere/proxy/frontend/mysql/command/query/binary/prepare/MySQLComStmtPrepareParameterMarkerExtractor.java b/proxy/frontend/type/mysql/src/main/java/org/apache/shardingsphere/proxy/frontend/mysql/command/query/binary/prepare/MySQLComStmtPrepareParameterMarkerExtractor.java
index 48bf68426d5cc..d62870f09d049 100644
--- a/proxy/frontend/type/mysql/src/main/java/org/apache/shardingsphere/proxy/frontend/mysql/command/query/binary/prepare/MySQLComStmtPrepareParameterMarkerExtractor.java
+++ b/proxy/frontend/type/mysql/src/main/java/org/apache/shardingsphere/proxy/frontend/mysql/command/query/binary/prepare/MySQLComStmtPrepareParameterMarkerExtractor.java
@@ -24,6 +24,7 @@
 import org.apache.shardingsphere.infra.metadata.database.schema.model.ShardingSphereColumn;
 import org.apache.shardingsphere.infra.metadata.database.schema.model.ShardingSphereSchema;
 import org.apache.shardingsphere.infra.metadata.database.schema.model.ShardingSphereTable;
+import org.apache.shardingsphere.infra.metadata.identifier.ShardingSphereIdentifier;
 import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.assignment.ColumnAssignmentSegment;
 import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.assignment.InsertValuesSegment;
 import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.expr.ExpressionSegment;
@@ -67,7 +68,9 @@ private static List<ShardingSphereColumn> findColumnsOfParameterMarkersForInsert
     }
     
     private static List<String> getColumnNamesOfInsertStatement(final InsertStatement insertStatement, final ShardingSphereTable table) {
-        return insertStatement.getColumns().isEmpty() ? table.getColumnNames() : insertStatement.getColumns().stream().map(each -> each.getIdentifier().getValue()).collect(Collectors.toList());
+        return insertStatement.getColumns().isEmpty()
+                ? table.getColumnNames().stream().map(ShardingSphereIdentifier::getValue).collect(Collectors.toList())
+                : insertStatement.getColumns().stream().map(each -> each.getIdentifier().getValue()).collect(Collectors.toList());
     }
     
     private static List<ShardingSphereColumn> getParameterMarkerColumns(final InsertStatement insertStatement, final ShardingSphereTable table, final List<String> columnNamesOfInsert) {
diff --git a/proxy/frontend/type/postgresql/src/main/java/org/apache/shardingsphere/proxy/frontend/postgresql/command/query/extended/describe/PostgreSQLComDescribeExecutor.java b/proxy/frontend/type/postgresql/src/main/java/org/apache/shardingsphere/proxy/frontend/postgresql/command/query/extended/describe/PostgreSQLComDescribeExecutor.java
index 0a5db3094daa6..ac1ccea702cde 100644
--- a/proxy/frontend/type/postgresql/src/main/java/org/apache/shardingsphere/proxy/frontend/postgresql/command/query/extended/describe/PostgreSQLComDescribeExecutor.java
+++ b/proxy/frontend/type/postgresql/src/main/java/org/apache/shardingsphere/proxy/frontend/postgresql/command/query/extended/describe/PostgreSQLComDescribeExecutor.java
@@ -38,6 +38,7 @@
 import org.apache.shardingsphere.infra.metadata.database.ShardingSphereDatabase;
 import org.apache.shardingsphere.infra.metadata.database.schema.model.ShardingSphereColumn;
 import org.apache.shardingsphere.infra.metadata.database.schema.model.ShardingSphereTable;
+import org.apache.shardingsphere.infra.metadata.identifier.ShardingSphereIdentifier;
 import org.apache.shardingsphere.infra.session.query.QueryContext;
 import org.apache.shardingsphere.mode.metadata.MetaDataContexts;
 import org.apache.shardingsphere.proxy.backend.connector.ProxyDatabaseConnectionManager;
@@ -131,7 +132,7 @@ private void describeInsertStatementByDatabaseMetaData(final PostgreSQLServerPre
         }
         String logicTableName = insertStatement.getTable().map(optional -> optional.getTableName().getIdentifier().getValue()).orElse("");
         ShardingSphereTable table = getTableFromMetaData(connectionSession.getUsedDatabaseName(), insertStatement, logicTableName);
-        List<String> columnNamesOfInsert = getColumnNamesOfInsertStatement(insertStatement, table);
+        List<ShardingSphereIdentifier> columnNamesOfInsert = getColumnNamesOfInsertStatement(insertStatement, table);
         preparedStatement.setRowDescription(returningSegment.<PostgreSQLPacket>map(returning -> describeReturning(returning, table)).orElseGet(PostgreSQLNoDataPacket::getInstance));
         int parameterMarkerIndex = 0;
         for (InsertValuesSegment each : insertStatement.getValues()) {
@@ -144,7 +145,7 @@ private void describeInsertStatementByDatabaseMetaData(final PostgreSQLServerPre
                     parameterMarkerIndex++;
                     continue;
                 }
-                String columnName = columnNamesOfInsert.get(i);
+                String columnName = columnNamesOfInsert.get(i).toString();
                 ShardingSpherePreconditions.checkState(table.containsColumn(columnName), () -> new ColumnNotFoundException(logicTableName, columnName));
                 preparedStatement.getParameterTypes().set(parameterMarkerIndex++, PostgreSQLColumnType.valueOfJDBCType(table.getColumn(columnName).getDataType()));
             }
@@ -169,8 +170,10 @@ private ShardingSphereTable getTableFromMetaData(final String databaseName, fina
         return database.getSchema(schemaName).getTable(logicTableName);
     }
     
-    private List<String> getColumnNamesOfInsertStatement(final InsertStatement insertStatement, final ShardingSphereTable table) {
-        return insertStatement.getColumns().isEmpty() ? table.getColumnNames() : insertStatement.getColumns().stream().map(each -> each.getIdentifier().getValue()).collect(Collectors.toList());
+    private List<ShardingSphereIdentifier> getColumnNamesOfInsertStatement(final InsertStatement insertStatement, final ShardingSphereTable table) {
+        return insertStatement.getColumns().isEmpty()
+                ? table.getColumnNames()
+                : insertStatement.getColumns().stream().map(each -> new ShardingSphereIdentifier(each.getIdentifier().getValue())).collect(Collectors.toList());
     }
     
     private PostgreSQLRowDescriptionPacket describeReturning(final ReturningSegment returningSegment, final ShardingSphereTable table) {