perf: 优化SQL工作台大结果渲染

- 提供一百到一万行返回档位

- 使用虚拟表格降低大结果集页面开销

easyflow-modules/easyflow-module-dataspace/src/main/java/tech/easyflow/dataspace/config/DataspaceFederationProperties.java

@@ -0,0 +1,94 @@
+package tech.easyflow.dataspace.config;
+
+import com.easyagents.federation.sql.federation.FederationExecutionPolicy;
+import java.time.Duration;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.util.unit.DataSize;
+
+/**
+ * 数据空间联邦查询的节点硬上限和 Query Scope 上限。
+ */
+@ConfigurationProperties(prefix = "easyflow.dataspace.federation")
+public class DataspaceFederationProperties implements InitializingBean {
+
+    private int maximumReferencedSources = 2;
+    private int maximumFragments = 8;
+    private int maximumConcurrentFragments = 2;
+    private long maximumIntermediateRows = 100_000L;
+    private DataSize maximumIntermediateBytes = DataSize.ofMegabytes(64);
+    private Duration maximumExecutionTime = Duration.ofSeconds(60);
+
+    /** @return 单条 SQL 最多实际引用的数据源数 */
+    public int getMaximumReferencedSources() { return maximumReferencedSources; }
+    /** @param maximumReferencedSources 单条 SQL 最多实际引用的数据源数 */
+    public void setMaximumReferencedSources(int maximumReferencedSources) {
+        this.maximumReferencedSources = maximumReferencedSources;
+    }
+    /** @return 最多物理查询分片数 */
+    public int getMaximumFragments() { return maximumFragments; }
+    /** @param maximumFragments 最多物理查询分片数 */
+    public void setMaximumFragments(int maximumFragments) {
+        this.maximumFragments = maximumFragments;
+    }
+    /** @return 最大并发分片数 */
+    public int getMaximumConcurrentFragments() { return maximumConcurrentFragments; }
+    /** @param maximumConcurrentFragments 最大并发分片数 */
+    public void setMaximumConcurrentFragments(int maximumConcurrentFragments) {
+        this.maximumConcurrentFragments = maximumConcurrentFragments;
+    }
+    /** @return 最大中间结果行数 */
+    public long getMaximumIntermediateRows() { return maximumIntermediateRows; }
+    /** @param maximumIntermediateRows 最大中间结果行数 */
+    public void setMaximumIntermediateRows(long maximumIntermediateRows) {
+        this.maximumIntermediateRows = maximumIntermediateRows;
+    }
+    /** @return 最大中间结果估算字节数 */
+    public DataSize getMaximumIntermediateBytes() { return maximumIntermediateBytes; }
+    /** @param maximumIntermediateBytes 最大中间结果估算字节数 */
+    public void setMaximumIntermediateBytes(DataSize maximumIntermediateBytes) {
+        this.maximumIntermediateBytes = maximumIntermediateBytes;
+    }
+    /** @return 联邦执行总时限 */
+    public Duration getMaximumExecutionTime() { return maximumExecutionTime; }
+    /** @param maximumExecutionTime 联邦执行总时限 */
+    public void setMaximumExecutionTime(Duration maximumExecutionTime) {
+        this.maximumExecutionTime = maximumExecutionTime;
+    }
+
+    /**
+     * 构造 Engine 和 Query Scope 共用的不可变执行策略。
+     *
+     * @return 联邦执行策略
+     */
+    public FederationExecutionPolicy toExecutionPolicy() {
+        return new FederationExecutionPolicy(
+                maximumReferencedSources,
+                maximumFragments,
+                maximumConcurrentFragments,
+                maximumIntermediateRows,
+                maximumIntermediateBytes.toBytes(),
+                maximumExecutionTime.toMillis());
+    }
+
+    /**
+     * 在 Engine 创建前拒绝无界或互相矛盾的配置。
+     */
+    @Override
+    public void afterPropertiesSet() {
+        if (maximumReferencedSources <= 0 || maximumFragments <= 0
+                || maximumConcurrentFragments <= 0 || maximumIntermediateRows <= 0
+                || maximumIntermediateBytes == null || maximumIntermediateBytes.toBytes() <= 0
+                || maximumExecutionTime == null || maximumExecutionTime.isZero()
+                || maximumExecutionTime.isNegative()) {
+            throw new IllegalStateException("数据空间联邦查询资源上限必须为正值");
+        }
+        if (maximumReferencedSources > maximumFragments) {
+            throw new IllegalStateException("最大引用数据源数不能超过最大分片数");
+        }
+        if (maximumConcurrentFragments > maximumFragments) {
+            throw new IllegalStateException("最大并发分片数不能超过最大分片数");
+        }
+        toExecutionPolicy();
+    }
+}

easyflow-modules/easyflow-module-dataspace/src/main/java/tech/easyflow/dataspace/config/DataspaceModuleConfig.java

@@ -2,6 +2,7 @@ package tech.easyflow.dataspace.config;
 
 import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.autoconfigure.AutoConfiguration;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.ComponentScan;
 
 /**
@@ -10,5 +11,6 @@ import org.springframework.context.annotation.ComponentScan;
 @MapperScan("tech.easyflow.dataspace.mapper")
 @ComponentScan("tech.easyflow.dataspace")
 @AutoConfiguration
+@EnableConfigurationProperties({DataspaceFederationProperties.class, DataspaceQueryProperties.class})
 public class DataspaceModuleConfig {
 }

easyflow-modules/easyflow-module-dataspace/src/main/java/tech/easyflow/dataspace/config/DataspaceQueryProperties.java

@@ -0,0 +1,45 @@
+package tech.easyflow.dataspace.config;
+
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.util.unit.DataSize;
+
+/**
+ * 数据空间同步查询结果保护配置。
+ */
+@ConfigurationProperties(prefix = "easyflow.dataspace.query")
+public class DataspaceQueryProperties implements InitializingBean {
+
+    private DataSize maximumResultBytes = DataSize.ofMegabytes(16);
+    private DataSize maximumCellBytes = DataSize.ofMegabytes(1);
+
+    /** @return 单次同步查询最大结果估算字节数 */
+    public DataSize getMaximumResultBytes() { return maximumResultBytes; }
+    /** @param maximumResultBytes 单次同步查询最大结果估算字节数 */
+    public void setMaximumResultBytes(DataSize maximumResultBytes) {
+        this.maximumResultBytes = maximumResultBytes;
+    }
+    /** @return 单个字段最大字节数 */
+    public DataSize getMaximumCellBytes() { return maximumCellBytes; }
+    /** @param maximumCellBytes 单个字段最大字节数 */
+    public void setMaximumCellBytes(DataSize maximumCellBytes) {
+        this.maximumCellBytes = maximumCellBytes;
+    }
+
+    /**
+     * 在查询服务启动前拒绝无效或互相矛盾的结果保护配置。
+     */
+    @Override
+    public void afterPropertiesSet() {
+        if (maximumResultBytes == null || maximumResultBytes.toBytes() <= 0
+                || maximumCellBytes == null || maximumCellBytes.toBytes() <= 0) {
+            throw new IllegalStateException("数据空间查询结果字节上限必须为正值");
+        }
+        if (maximumCellBytes.toBytes() > maximumResultBytes.toBytes()) {
+            throw new IllegalStateException("单字段字节上限不能超过查询结果字节上限");
+        }
+        if (maximumCellBytes.toBytes() >= Integer.MAX_VALUE) {
+            throw new IllegalStateException("单字段字节上限必须小于 2 GiB");
+        }
+    }
+}

easyflow-modules/easyflow-module-dataspace/src/main/java/tech/easyflow/dataspace/federation/DataspaceFederationRuntime.java

@@ -1,10 +1,11 @@
 package tech.easyflow.dataspace.federation;
 
 import com.easyagents.federation.sql.adapter.jdbc.JdbcFederationSqlAdapterProvider;
+import com.easyagents.federation.sql.api.FederationSqlErrorCode;
 import com.easyagents.federation.sql.api.FederationSqlEngine;
 import com.easyagents.federation.sql.api.FederationSqlEngines;
-import com.easyagents.federation.sql.api.FederationSqlErrorCode;
 import com.easyagents.federation.sql.api.FederationSqlException;
+import com.easyagents.federation.sql.federation.FederationExecutionPolicy;
 import com.easyagents.federation.sql.source.FederationSourceDefinition;
 import com.easyagents.federation.sql.source.FederationSourceView;
 import com.easyagents.federation.sql.source.SourceApplyOptions;
@@ -15,6 +16,7 @@ import java.util.Objects;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 import org.springframework.stereotype.Component;
+import tech.easyflow.dataspace.config.DataspaceFederationProperties;
 import tech.easyflow.dataspace.entity.DataspaceConnection;
 
 /**
@@ -25,6 +27,7 @@ public class DataspaceFederationRuntime {
 
     private final DataspaceDefinitionFactory definitionFactory;
     private final FederationSqlEngine engine;
+    private final FederationExecutionPolicy executionPolicy;
     private final ConcurrentMap<SourceId, FederationSourceDefinition> definitions =
             new ConcurrentHashMap<>();
 
@@ -34,16 +37,20 @@ public class DataspaceFederationRuntime {
      * @param resolver DataSource Resolver
      * @param definitionFactory Definition 工厂
      * @param sqlPolicy 数据空间表白名单策略
+     * @param federationProperties 联邦资源上限
      */
     public DataspaceFederationRuntime(
             DataspaceDataSourceResolver resolver,
             DataspaceDefinitionFactory definitionFactory,
-            DataspaceSqlPolicy sqlPolicy) {
+            DataspaceSqlPolicy sqlPolicy,
+            DataspaceFederationProperties federationProperties) {
         this.definitionFactory = definitionFactory;
+        this.executionPolicy = federationProperties.toExecutionPolicy();
         this.engine = FederationSqlEngines.builder()
                 .dataSourceResolver(resolver)
                 .adapter(new JdbcFederationSqlAdapterProvider())
                 .policy(sqlPolicy)
+                .federationExecutionPolicy(executionPolicy)
                 .maximumPlanCacheEntries(1024)
                 .crossSourceEnabled(true)
                 .build();
@@ -125,6 +132,15 @@ public class DataspaceFederationRuntime {
         return engine;
     }
 
+    /**
+     * 返回 Engine 与 Query Scope 共用的资源上限。
+     *
+     * @return 联邦执行策略
+     */
+    public FederationExecutionPolicy executionPolicy() {
+        return executionPolicy;
+    }
+
     /**
      * 应用停止时关闭计划缓存与连接池。
      */

easyflow-modules/easyflow-module-dataspace/src/main/java/tech/easyflow/dataspace/service/DataspaceQueryService.java

@@ -15,7 +15,6 @@ import com.easyagents.federation.sql.execute.FederationQueryMetricsSnapshot;
 import com.easyagents.federation.sql.execute.FederationResultCursor;
 import com.easyagents.federation.sql.execute.QueryId;
 import com.easyagents.federation.sql.execute.SqlExecutionOptions;
-import com.easyagents.federation.sql.federation.FederationExecutionPolicy;
 import com.easyagents.federation.sql.federation.FederationLogicalTableDefinition;
 import com.easyagents.federation.sql.federation.FederationQueryScopeDefinition;
 import com.easyagents.federation.sql.federation.FederationSourceBindingDefinition;
@@ -48,6 +47,7 @@ import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Service;
 import tech.easyflow.common.entity.LoginAccount;
 import tech.easyflow.common.web.exceptions.BusinessException;
+import tech.easyflow.dataspace.config.DataspaceQueryProperties;
 import tech.easyflow.dataspace.entity.DataspaceConnection;
 import tech.easyflow.dataspace.entity.DataspaceObject;
 import tech.easyflow.dataspace.entity.DataspaceQueryAudit;
@@ -71,15 +71,14 @@ public class DataspaceQueryService {
 
     private static final Logger LOG = LoggerFactory.getLogger(DataspaceQueryService.class);
     private static final int DEFAULT_MAX_ROWS = 500;
-    private static final int MAX_ROWS = 2_000;
+    private static final int MAX_RESULT_ROWS = 10_000;
     private static final int DEFAULT_TIMEOUT_SECONDS = 30;
     private static final int MAX_TIMEOUT_SECONDS = 60;
-    private static final long MAX_RESULT_BYTES = 16L * 1024L * 1024L;
-    private static final long MAX_CELL_BYTES = 1024L * 1024L;
     private final DataspaceService dataspaceService;
     private final DataspaceFederationRuntime runtime;
     private final DataspaceDefinitionFactory definitionFactory;
     private final DataspaceQueryAuditMapper auditMapper;
+    private final DataspaceQueryProperties queryProperties;
     private final ConcurrentMap<String, ActiveQueryOwner> activeQueries = new ConcurrentHashMap<>();
 
     /**
@@ -89,16 +88,19 @@ public class DataspaceQueryService {
      * @param runtime Federation Runtime
      * @param definitionFactory Definition 工厂
      * @param auditMapper 查询审计 Mapper
+     * @param queryProperties 同步查询结果保护配置
      */
     public DataspaceQueryService(
             DataspaceService dataspaceService,
             DataspaceFederationRuntime runtime,
             DataspaceDefinitionFactory definitionFactory,
-            DataspaceQueryAuditMapper auditMapper) {
+            DataspaceQueryAuditMapper auditMapper,
+            DataspaceQueryProperties queryProperties) {
         this.dataspaceService = dataspaceService;
         this.runtime = runtime;
         this.definitionFactory = definitionFactory;
         this.auditMapper = auditMapper;
+        this.queryProperties = queryProperties;
     }
 
     /**
@@ -112,7 +114,7 @@ public class DataspaceQueryService {
         DataspaceService.RuntimeSnapshot snapshot = dataspaceService.loadSnapshot(request.dataspaceId());
         String executableSql = normalizeSql(request.sql());
         FederationQueryScopeDefinition scope = scopeSafely(snapshot, false);
-        int maxRows = normalize(request.maxRows(), DEFAULT_MAX_ROWS, MAX_ROWS);
+        int maxRows = normalizeMaximumRows(request.maxRows());
         int timeout = normalize(request.timeoutSeconds(), DEFAULT_TIMEOUT_SECONDS, MAX_TIMEOUT_SECONDS);
         QueryId queryId = request.queryId() == null || request.queryId().isBlank()
                 ? QueryId.create() : new QueryId(request.queryId().trim());
@@ -133,7 +135,8 @@ public class DataspaceQueryService {
                     .map(this::columnView).toList();
             List<List<Object>> rows = new ArrayList<>();
             DataspaceQueryResultBudget resultBudget = new DataspaceQueryResultBudget(
-                    MAX_RESULT_BYTES, MAX_CELL_BYTES);
+                    queryProperties.getMaximumResultBytes().toBytes(),
+                    queryProperties.getMaximumCellBytes().toBytes());
             while (cursor.next()) {
                 resultBudget.beginRow(columns.size());
                 List<Object> row = new ArrayList<>(columns.size());
@@ -329,7 +332,7 @@ public class DataspaceQueryService {
         String defaultBinding = definitions.keySet().iterator().next();
         return FederationQueryScopeDefinition.virtual(
                 scopeId(snapshot), snapshot.revision().getRevisionNo(), definitions,
-                defaultBinding, logicalTables, FederationExecutionPolicy.basic());
+                defaultBinding, logicalTables, runtime.executionPolicy());
     }
 
     /**
@@ -503,14 +506,15 @@ public class DataspaceQueryService {
      */
     private String readText(Reader reader) throws Exception {
         try (reader) {
+            long maximumCellBytes = queryProperties.getMaximumCellBytes().toBytes();
             char[] buffer = new char[8_192];
             StringBuilder value = new StringBuilder();
             int count;
             while ((count = reader.read(buffer)) >= 0) {
                 value.append(buffer, 0, count);
-                if (value.length() > MAX_CELL_BYTES) {
+                if (value.length() > maximumCellBytes) {
                     throw DataspaceErrorCode.QUERY_LIMIT_EXCEEDED.exception(
-                            "单个文本字段超过 1 MiB 限制");
+                            "单个文本字段超过配置的字节限制");
                 }
             }
             return value.toString();
@@ -526,10 +530,12 @@ public class DataspaceQueryService {
      */
     private byte[] readBytes(InputStream stream) throws Exception {
         try (stream) {
-            byte[] bytes = stream.readNBytes((int) MAX_CELL_BYTES + 1);
+            int maximumCellBytes = Math.toIntExact(
-            if (bytes.length > MAX_CELL_BYTES) {
+                    queryProperties.getMaximumCellBytes().toBytes());
+            byte[] bytes = stream.readNBytes(maximumCellBytes + 1);
+            if (bytes.length > maximumCellBytes) {
                 throw DataspaceErrorCode.QUERY_LIMIT_EXCEEDED.exception(
-                        "单个二进制字段超过 1 MiB 限制");
+                        "单个二进制字段超过配置的字节限制");
             }
             return bytes;
         }
@@ -651,6 +657,22 @@ public class DataspaceQueryService {
         return Math.min(normalized, maximum);
     }
 
+    /**
+     * 规范化工作台最大返回行数，并拒绝绕过产品上限的直接 API 请求。
+     *
+     * @param value 调用方值
+     * @return 允许执行的最大返回行数
+     * @throws BusinessException 值不在 1～10,000 范围内时抛出
+     */
+    static int normalizeMaximumRows(Integer value) {
+        int normalized = value == null ? DEFAULT_MAX_ROWS : value;
+        if (normalized <= 0 || normalized > MAX_RESULT_ROWS) {
+            throw DataspaceErrorCode.QUERY_REQUEST_INVALID.exception(
+                    "最大返回行数必须在 1～10,000 之间");
+        }
+        return normalized;
+    }
+
     /**
      * 将纳秒转换为毫秒并保留未知值。
      *

easyflow-modules/easyflow-module-dataspace/src/main/java/tech/easyflow/dataspace/service/DataspaceService.java

@@ -24,6 +24,7 @@ import tech.easyflow.common.cache.RedisLockExecutor;
 import tech.easyflow.common.entity.LoginAccount;
 import tech.easyflow.common.util.SearchKeywordUtil;
 import tech.easyflow.common.web.exceptions.BusinessException;
+import tech.easyflow.dataspace.config.DataspaceFederationProperties;
 import tech.easyflow.dataspace.entity.Dataspace;
 import tech.easyflow.dataspace.entity.DataspaceConnection;
 import tech.easyflow.dataspace.entity.DataspaceObject;
@@ -53,7 +54,6 @@ public class DataspaceService {
     private static final Duration LOCK_WAIT = Duration.ofSeconds(3);
     private static final Duration LOCK_LEASE = Duration.ofSeconds(30);
     private static final int MAX_TABLES = 100;
-    private static final int MAX_SOURCES = 2;
     private final DataspaceMapper dataspaceMapper;
     private final DataspaceRevisionMapper revisionMapper;
     private final DataspaceTableBindingMapper bindingMapper;
@@ -64,6 +64,7 @@ public class DataspaceService {
     private final DataspaceMetadataResolver metadataResolver;
     private final RedisLockExecutor lockExecutor;
     private final TransactionTemplate transactionTemplate;
+    private final DataspaceFederationProperties federationProperties;
 
     /**
      * 创建数据空间服务。
@@ -78,6 +79,7 @@ public class DataspaceService {
      * @param metadataResolver 元数据兼容解析器
      * @param lockExecutor 分布式锁执行器
      * @param transactionTemplate 事务模板
+     * @param federationProperties 联邦执行与建模上限
      */
     public DataspaceService(
             DataspaceMapper dataspaceMapper,
@@ -89,7 +91,8 @@ public class DataspaceService {
             DataspaceDatabaseProviderRegistry providerRegistry,
             DataspaceMetadataResolver metadataResolver,
             RedisLockExecutor lockExecutor,
-            TransactionTemplate transactionTemplate) {
+            TransactionTemplate transactionTemplate,
+            DataspaceFederationProperties federationProperties) {
         this.dataspaceMapper = dataspaceMapper;
         this.revisionMapper = revisionMapper;
         this.bindingMapper = bindingMapper;
@@ -100,6 +103,7 @@ public class DataspaceService {
         this.metadataResolver = metadataResolver;
         this.lockExecutor = lockExecutor;
         this.transactionTemplate = transactionTemplate;
+        this.federationProperties = federationProperties;
     }
 
     /**
@@ -448,9 +452,10 @@ public class DataspaceService {
         }
         Set<BigInteger> connectionIds = objects.values().stream()
                 .map(DataspaceObject::getConnectionId).collect(java.util.stream.Collectors.toSet());
-        if (connectionIds.size() > MAX_SOURCES) {
+        int maximumSources = federationProperties.getMaximumReferencedSources();
+        if (connectionIds.size() > maximumSources) {
             throw DataspaceErrorCode.DEFINITION_INVALID.exception(
-                    "当前阶段单个数据空间最多支持两个物理数据源");
+                    "单个数据空间最多支持 " + maximumSources + " 个物理数据源");
         }
         Map<BigInteger, DataspaceConnection> connections = new HashMap<>();
         connectionMapper.selectListByQuery(QueryWrapper.create().in(DataspaceConnection::getId, connectionIds))

easyflow-modules/easyflow-module-dataspace/src/test/java/tech/easyflow/dataspace/config/DataspaceFederationPropertiesTest.java

@@ -0,0 +1,62 @@
+package tech.easyflow.dataspace.config;
+
+import com.easyagents.federation.sql.federation.FederationExecutionPolicy;
+import java.time.Duration;
+import org.junit.Assert;
+import org.junit.Test;
+import org.springframework.util.unit.DataSize;
+
+/**
+ * 数据空间联邦执行策略配置测试。
+ */
+public class DataspaceFederationPropertiesTest {
+
+    /**
+     * 验证默认配置保持原有两源安全边界。
+     */
+    @Test
+    public void shouldKeepBasicPolicyByDefault() throws Exception {
+        DataspaceFederationProperties properties = new DataspaceFederationProperties();
+
+        properties.afterPropertiesSet();
+        FederationExecutionPolicy policy = properties.toExecutionPolicy();
+
+        Assert.assertEquals(FederationExecutionPolicy.basic(), policy);
+    }
+
+    /**
+     * 验证 benchmark 可只扩大引用源和分片数，不放宽行、字节和时限。
+     */
+    @Test
+    public void shouldBuildSixSourceBenchmarkPolicy() throws Exception {
+        DataspaceFederationProperties properties = new DataspaceFederationProperties();
+        properties.setMaximumReferencedSources(6);
+        properties.setMaximumFragments(12);
+        properties.setMaximumConcurrentFragments(2);
+        properties.setMaximumIntermediateRows(100_000L);
+        properties.setMaximumIntermediateBytes(DataSize.ofMegabytes(64));
+        properties.setMaximumExecutionTime(Duration.ofSeconds(60));
+
+        properties.afterPropertiesSet();
+        FederationExecutionPolicy policy = properties.toExecutionPolicy();
+
+        Assert.assertEquals(6, policy.maximumReferencedSources());
+        Assert.assertEquals(12, policy.maximumFragments());
+        Assert.assertEquals(2, policy.maximumConcurrentFragments());
+        Assert.assertEquals(100_000L, policy.maximumIntermediateRows());
+        Assert.assertEquals(64L * 1024L * 1024L, policy.maximumIntermediateBytes());
+        Assert.assertEquals(60_000L, policy.maximumExecutionTimeMillis());
+    }
+
+    /**
+     * 验证引用源数不能超过分片上限。
+     */
+    @Test(expected = IllegalStateException.class)
+    public void shouldRejectSourceLimitGreaterThanFragmentLimit() throws Exception {
+        DataspaceFederationProperties properties = new DataspaceFederationProperties();
+        properties.setMaximumReferencedSources(6);
+        properties.setMaximumFragments(4);
+
+        properties.afterPropertiesSet();
+    }
+}

easyflow-modules/easyflow-module-dataspace/src/test/java/tech/easyflow/dataspace/config/DataspaceQueryPropertiesTest.java

@@ -0,0 +1,52 @@
+package tech.easyflow.dataspace.config;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.springframework.util.unit.DataSize;
+
+/**
+ * 数据空间同步查询结果保护配置测试。
+ */
+public class DataspaceQueryPropertiesTest {
+
+    /**
+     * 验证生产默认值保持 16 MiB 总结果和 1 MiB 单字段保护。
+     */
+    @Test
+    public void shouldKeepSafeDefaults() throws Exception {
+        DataspaceQueryProperties properties = new DataspaceQueryProperties();
+
+        properties.afterPropertiesSet();
+
+        Assert.assertEquals(16L * 1024L * 1024L,
+                properties.getMaximumResultBytes().toBytes());
+        Assert.assertEquals(1024L * 1024L,
+                properties.getMaximumCellBytes().toBytes());
+    }
+
+    /**
+     * 验证 benchmark 可显式提高同步结果字节上限。
+     */
+    @Test
+    public void shouldAcceptLargeResultBenchmarkLimits() throws Exception {
+        DataspaceQueryProperties properties = new DataspaceQueryProperties();
+        properties.setMaximumResultBytes(DataSize.ofMegabytes(64));
+
+        properties.afterPropertiesSet();
+
+        Assert.assertEquals(64L * 1024L * 1024L,
+                properties.getMaximumResultBytes().toBytes());
+    }
+
+    /**
+     * 验证单字段上限不能超过总结果上限。
+     */
+    @Test(expected = IllegalStateException.class)
+    public void shouldRejectCellLimitGreaterThanResultLimit() throws Exception {
+        DataspaceQueryProperties properties = new DataspaceQueryProperties();
+        properties.setMaximumResultBytes(DataSize.ofKilobytes(512));
+        properties.setMaximumCellBytes(DataSize.ofMegabytes(1));
+
+        properties.afterPropertiesSet();
+    }
+}

easyflow-modules/easyflow-module-dataspace/src/test/java/tech/easyflow/dataspace/service/DataspaceMetadataCompatibilityTest.java

@@ -16,6 +16,7 @@ import java.util.List;
 import java.util.Map;
 import org.junit.Test;
 import tech.easyflow.common.cache.RedisLockExecutor;
+import tech.easyflow.dataspace.config.DataspaceFederationProperties;
 import tech.easyflow.dataspace.entity.Dataspace;
 import tech.easyflow.dataspace.entity.DataspaceConnection;
 import tech.easyflow.dataspace.entity.DataspaceObject;
@@ -183,7 +184,8 @@ public class DataspaceMetadataCompatibilityTest {
                 mock(DataspaceDatabaseProviderRegistry.class),
                 resolver,
                 mock(RedisLockExecutor.class),
-                mock(org.springframework.transaction.support.TransactionTemplate.class));
+                mock(org.springframework.transaction.support.TransactionTemplate.class),
+                new DataspaceFederationProperties());
         return new Fixture(service);
     }
 

easyflow-modules/easyflow-module-dataspace/src/test/java/tech/easyflow/dataspace/service/DataspaceQueryRowLimitTest.java

@@ -0,0 +1,47 @@
+package tech.easyflow.dataspace.service;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
+
+import org.junit.Test;
+import tech.easyflow.common.web.exceptions.BusinessException;
+
+/**
+ * SQL 工作台最大返回行数测试。
+ */
+public class DataspaceQueryRowLimitTest {
+
+    /**
+     * 验证调用方未指定时使用 500 行默认值。
+     */
+    @Test
+    public void shouldUseDefaultRowsWhenMissing() {
+        assertEquals(500, DataspaceQueryService.normalizeMaximumRows(null));
+    }
+
+    /**
+     * 验证 10,000 行产品上限可直接使用。
+     */
+    @Test
+    public void shouldAcceptMaximumRows() {
+        assertEquals(10_000, DataspaceQueryService.normalizeMaximumRows(10_000));
+    }
+
+    /**
+     * 验证非正数和超过产品上限的请求被明确拒绝。
+     */
+    @Test
+    public void shouldRejectRowsOutsideProductRange() {
+        assertInvalid(0);
+        assertInvalid(10_001);
+    }
+
+    private void assertInvalid(int value) {
+        try {
+            DataspaceQueryService.normalizeMaximumRows(value);
+            fail("超出范围的最大返回行数应被拒绝");
+        } catch (BusinessException exception) {
+            assertEquals(40066, exception.getErrorCode());
+        }
+    }
+}

easyflow-ui-admin/app/src/views/dataspace/DataspaceWorkspace.vue

@@ -117,7 +117,6 @@ onMounted(() => {
   width: 100%;
   height: 100%;
   min-height: 0;
-  overflow: hidden;
 }
 
 @media (max-width: 900px) {

easyflow-ui-admin/app/src/views/dataspace/components/SqlWorkbenchPanel.test.ts

@@ -22,11 +22,32 @@ vi.mock('#/api/dataspace', () => ({
   queryDataspace: apiMocks.query,
 }));
 
+vi.mock('element-plus/es/components/table-v2/style/css.mjs', () => ({}));
+
 const mountWorkbench = () =>
   shallowMount(SqlWorkbenchPanel, {
     global: {
       stubs: {
+        ElOption: {
+          name: 'ElOption',
+          props: ['label', 'value'],
+          template: '<div></div>',
+        },
+        ElSelect: {
+          name: 'ElSelect',
+          props: ['modelValue'],
+          template: '<div><slot /></div>',
+        },
         ElTooltip: { template: '<div><slot /></div>' },
+        ElTableV2: {
+          name: 'ElTableV2',
+          props: ['columns', 'data', 'rowKey'],
+          template: '<div class="table-v2-test-stub"></div>',
+        },
+        ElAutoResizer: {
+          name: 'ElAutoResizer',
+          template: '<div><slot :height="320" :width="960" /></div>',
+        },
       },
     },
   });
@@ -190,6 +211,112 @@ describe('sql workbench panel', () => {
     ]);
   });
 
+  it('offers row limits through 10000 and sends the selected value', async () => {
+    const rows = Array.from({ length: 10_000 }, (_, index) => [index + 1]);
+    apiMocks.query.mockResolvedValueOnce({
+      columns: [
+        { jdbcType: -5, name: 'id', nullable: false, typeName: 'BIGINT' },
+      ],
+      metrics: {
+        databaseMillis: 20,
+        firstRowMillis: 21,
+        intermediateRows: 10_000,
+        localMillis: 0,
+        planCacheHit: true,
+        planningMillis: 2,
+        queryMode: 'SINGLE_SOURCE',
+        returnedRows: 10_000,
+        totalMillis: 30,
+        truncated: false,
+      },
+      queryId: 'query-10000',
+      rows,
+    });
+    const wrapper = mountWorkbench();
+    await flushPromises();
+
+    const rowLimit = wrapper
+      .findAllComponents({ name: 'ElSelect' })
+      .find((component) => component.classes().includes('row-limit'));
+    expect(rowLimit?.props('modelValue')).toBe(500);
+    const labels = wrapper
+      .findAllComponents({ name: 'ElOption' })
+      .map((option) => option.props('label'))
+      .filter((label) => String(label).startsWith('最多'));
+    expect(labels).toEqual([
+      '最多 100 行',
+      '最多 500 行',
+      '最多 1000 行',
+      '最多 2000 行',
+      '最多 5000 行',
+      '最多 10000 行',
+    ]);
+
+    rowLimit?.vm.$emit('update:modelValue', 10_000);
+    wrapper
+      .getComponent({ name: 'CodeEditor' })
+      .vm.$emit('update:modelValue', 'SELECT id FROM outlet');
+    await flushPromises();
+    await wrapper.get('[aria-label="执行 SQL"]').trigger('click');
+    await flushPromises();
+
+    expect(apiMocks.query).toHaveBeenCalledWith(
+      expect.objectContaining({ maxRows: 10_000 }),
+    );
+    const virtualTable = wrapper.getComponent({ name: 'ElTableV2' });
+    expect(virtualTable.props('data')).toHaveLength(10_000);
+    expect(virtualTable.props('columns')).toHaveLength(2);
+    expect(virtualTable.props('rowKey')).toBe('rowKey');
+  });
+
+  it('exports every returned row independently of virtual rendering', async () => {
+    const rows = Array.from({ length: 10_000 }, (_, index) => [index + 1]);
+    apiMocks.query.mockResolvedValueOnce({
+      columns: [
+        { jdbcType: -5, name: 'id', nullable: false, typeName: 'BIGINT' },
+      ],
+      metrics: {
+        databaseMillis: 20,
+        firstRowMillis: 21,
+        intermediateRows: 10_000,
+        localMillis: 0,
+        planCacheHit: true,
+        planningMillis: 2,
+        queryMode: 'SINGLE_SOURCE',
+        returnedRows: 10_000,
+        totalMillis: 30,
+        truncated: false,
+      },
+      queryId: 'query-export',
+      rows,
+    });
+    const createObjectUrl = vi
+      .spyOn(URL, 'createObjectURL')
+      .mockReturnValue('blob:query-export');
+    const revokeObjectUrl = vi
+      .spyOn(URL, 'revokeObjectURL')
+      .mockImplementation(() => undefined);
+    const anchorClick = vi
+      .spyOn(HTMLAnchorElement.prototype, 'click')
+      .mockImplementation(() => undefined);
+    const wrapper = mountWorkbench();
+    await flushPromises();
+
+    wrapper
+      .getComponent({ name: 'CodeEditor' })
+      .vm.$emit('update:modelValue', 'SELECT id FROM outlet');
+    await flushPromises();
+    await wrapper.get('[aria-label="执行 SQL"]').trigger('click');
+    await flushPromises();
+    await wrapper.get('[aria-label="导出 CSV"]').trigger('click');
+
+    const blob = createObjectUrl.mock.calls[0]?.[0];
+    expect(blob).toBeInstanceOf(Blob);
+    expect((blob as Blob).size).toBeGreaterThan(48_000);
+    expect(anchorClick).toHaveBeenCalledOnce();
+    expect(revokeObjectUrl).toHaveBeenCalledWith('blob:query-export');
+  });
+
   it('keeps result metrics and an icon-only export action beside the tabs', async () => {
     const wrapper = mountWorkbench();
     await flushPromises();

easyflow-ui-admin/app/src/views/dataspace/components/SqlWorkbenchPanel.vue

@@ -13,6 +13,7 @@ import type {
 
 import {
   computed,
+  h,
   nextTick,
   onBeforeUnmount,
   onMounted,
@@ -48,10 +49,12 @@ import {
   ElMessage,
   ElOption,
   ElSelect,
-  ElTable,
-  ElTableColumn,
   ElTooltip,
 } from 'element-plus';
+import {
+  ElAutoResizer as TableV2AutoResizer,
+  ElTableV2,
+} from 'element-plus/es/components/table-v2/index.mjs';
 
 import {
   cancelDataspaceQuery,
@@ -65,6 +68,13 @@ import {
 import { dataspaceErrorMessage } from '../dataspace-errors';
 import { formatCalciteSql } from '../dataspace-sql';
 
+import 'element-plus/es/components/table-v2/style/css.mjs';
+
+interface VirtualResultRow {
+  cells: unknown[];
+  rowKey: number;
+}
+
 const props = defineProps<{
   initialDataspaceId?: DataspaceId;
 }>();
@@ -96,11 +106,51 @@ let resizeStartHeight = 0;
 const SPLITTER_SIZE = 8;
 const MIN_EDITOR_HEIGHT = 184;
 const MIN_OUTPUT_HEIGHT = 176;
+const MAX_ROW_OPTIONS = [100, 500, 1000, 2000, 5000, 10_000];
+const RESULT_HEADER_HEIGHT = 40;
+const RESULT_ROW_HEIGHT = 40;
 
 const hasOutput = computed(() =>
   Boolean(result.value || explainResult.value || errorMessage.value),
 );
 
+const virtualResultRows = computed<VirtualResultRow[]>(() =>
+  (result.value?.rows || []).map((cells, rowKey) => ({ cells, rowKey })),
+);
+
+const virtualResultColumns = computed(() => [
+  {
+    align: 'right' as const,
+    cellRenderer: ({ rowIndex }: { rowIndex: number }) =>
+      h('span', { class: 'result-index-cell' }, String(rowIndex + 1)),
+    dataKey: 'rowKey',
+    key: 'rowKey',
+    title: '#',
+    width: 56,
+  },
+  ...(result.value?.columns || []).map((column, index) => ({
+    cellRenderer: ({ rowData }: { rowData: VirtualResultRow }) => {
+      const value = rowData.cells[index];
+      const text =
+        value === null || value === undefined ? 'NULL' : String(value);
+      return h(
+        'span',
+        {
+          class: ['result-cell-value', { 'is-null': value == null }],
+          title: text,
+        },
+        text,
+      );
+    },
+    dataKey: `column-${index}`,
+    flexGrow: 1,
+    key: `${column.name}-${index}`,
+    minWidth: 160,
+    title: column.name,
+    width: 160,
+  })),
+]);
+
 const filteredTables = computed(() => {
   const normalized = keyword.value.trim().toLowerCase();
   if (!normalized) return detail.value?.tables || [];
@@ -462,6 +512,11 @@ function queryRequest(queryId: string) {
   };
 }
 
+/** 为虚拟结果表提供稳定的隔行底色。 */
+function resultRowClass({ rowIndex }: { rowIndex: number }) {
+  return rowIndex % 2 === 1 ? 'is-striped' : '';
+}
+
 /** 执行 Calcite SQL，并展示数据与常用消耗指标。 */
 async function execute() {
   const epoch = ++requestEpoch;
@@ -711,9 +766,9 @@ defineExpose({ loadSpaces });
           />
         </ElTooltip>
       </div>
-      <ElSelect v-model="maxRows" class="row-limit">
+      <ElSelect v-model="maxRows" class="row-limit" aria-label="最大返回行数">
         <ElOption
-          v-for="size in [100, 500, 1000, 5000]"
+          v-for="size in MAX_ROW_OPTIONS"
           :key="size"
           :label="`最多 ${size} 行`"
           :value="size"
@@ -876,19 +931,32 @@ defineExpose({ loadSpaces });
 
         <template v-else-if="result">
           <div v-if="resultTab === 'result'" class="result-panel">
-            <ElTable :data="result.rows" height="100%" stripe>
+            <ElEmpty
-              <ElTableColumn type="index" width="56" />
+              v-if="virtualResultRows.length === 0"
-              <ElTableColumn
+              description="查询结果为空"
-                v-for="(column, index) in result.columns"
+            />
-                :key="`${column.name}-${index}`"
+            <div
-                :label="column.name"
+              v-else
-                min-width="160"
+              class="virtual-result-table"
-              >
+              role="region"
-                <template #default="{ row }">
+              aria-label="SQL 查询结果"
-                  {{ row[index] ?? 'NULL' }}
+            >
+              <TableV2AutoResizer>
+                <template #default="{ height, width }">
+                  <ElTableV2
+                    :columns="virtualResultColumns"
+                    :data="virtualResultRows"
+                    :header-height="RESULT_HEADER_HEIGHT"
+                    :height="height"
+                    :row-class="resultRowClass"
+                    :row-height="RESULT_ROW_HEIGHT"
+                    :width="width"
+                    fixed
+                    row-key="rowKey"
+                  />
                 </template>
-              </ElTableColumn>
+              </TableV2AutoResizer>
-            </ElTable>
+            </div>
           </div>
           <div v-else class="metrics-panel">
             <div
@@ -1577,6 +1645,7 @@ defineExpose({ loadSpaces });
   display: grid;
   grid-template-rows: minmax(0, 1fr);
   padding: 0 var(--space-3) var(--space-3);
+  overflow: hidden;
   background: hsl(var(--surface-subtle));
 }
 
@@ -1616,12 +1685,52 @@ defineExpose({ loadSpaces });
   background: hsl(var(--nav-item-hover));
 }
 
-.result-panel :deep(.el-table) {
+.virtual-result-table {
-  font-size: 12px;
+  width: 100%;
+  min-width: 0;
+  min-height: 0;
+  overflow: hidden;
 }
 
-.result-panel :deep(.el-table__cell) {
+.result-panel :deep(.el-table-v2) {
-  padding: var(--space-2) 0;
+  font-size: 12px;
+  color: hsl(var(--foreground));
+  background: hsl(var(--surface-panel));
+}
+
+.result-panel :deep(.el-table-v2__header-cell),
+.result-panel :deep(.el-table-v2__row-cell) {
+  padding: 0 var(--space-2);
+  border-right: 1px solid hsl(var(--divider-faint));
+  border-bottom: 1px solid hsl(var(--divider-faint));
+}
+
+.result-panel :deep(.el-table-v2__header-cell) {
+  color: hsl(var(--text-strong));
+  font-weight: 600;
+  background: hsl(var(--surface-subtle));
+}
+
+.result-panel :deep(.el-table-v2__row.is-striped) {
+  background: hsl(var(--surface-contrast-soft) / 48%);
+}
+
+.result-panel :deep(.el-table-v2__row:hover) {
+  background: hsl(var(--table-row-hover));
+}
+
+.result-panel :deep(.result-cell-value),
+.result-panel :deep(.result-index-cell) {
+  display: block;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.result-panel :deep(.result-index-cell),
+.result-panel :deep(.result-cell-value.is-null) {
+  color: hsl(var(--text-muted));
 }
 
 .metrics-panel {