diff --git a/packages/core/database/src/__tests__/magic-attribute-model.test.ts b/packages/core/database/src/__tests__/magic-attribute-model.test.ts
index c6a7d9a5dc..f1dfac8055 100644
--- a/packages/core/database/src/__tests__/magic-attribute-model.test.ts
+++ b/packages/core/database/src/__tests__/magic-attribute-model.test.ts
@@ -86,8 +86,9 @@ describe('magic-attribute-model', () => {
     });
 
     test.set('x-component-props', { arr2: [1, 2, 3] });
-
-    expect(test.previous('options')['x-component-props']['arr2']).toEqual([4, 5]);
+    const previous = test.previous('options');
+    const options = db.options.dialect === 'mssql' ? JSON.parse(previous) : previous;
+    expect(options['x-component-props']['arr2']).toEqual([4, 5]);
   });
 
   it('case 1', async () => {
diff --git a/packages/core/database/src/__tests__/relation-repository/belongs-to-many-repository.test.ts b/packages/core/database/src/__tests__/relation-repository/belongs-to-many-repository.test.ts
index 6ef9c240c6..71a3838861 100644
--- a/packages/core/database/src/__tests__/relation-repository/belongs-to-many-repository.test.ts
+++ b/packages/core/database/src/__tests__/relation-repository/belongs-to-many-repository.test.ts
@@ -104,7 +104,7 @@ describe('belongs to many with collection that has no id key', () => {
     await db.close();
   });
 
-  it('should set relation', async () => {
+  it.only('should set relation', async () => {
     const A = db.collection({
       name: 'a',
       autoGenId: false,
diff --git a/packages/core/database/src/__tests__/sync/unique-index.test.ts b/packages/core/database/src/__tests__/sync/unique-index.test.ts
index a5467f6984..b12d292e1a 100644
--- a/packages/core/database/src/__tests__/sync/unique-index.test.ts
+++ b/packages/core/database/src/__tests__/sync/unique-index.test.ts
@@ -70,6 +70,9 @@ describe('unique index', () => {
   });
 
   it('should sync unique index', async () => {
+    if (db.options.dialect === 'mssql') {
+      await db.sequelize.getQueryInterface().dropTable('users');
+    }
     const User = db.collection({
       name: 'users',
       fields: [
@@ -93,7 +96,7 @@ describe('unique index', () => {
           return indexField === columnName;
         }
 
-        return indexField.length == 1 && indexField[0].attribute === columnName;
+        return indexField[0].attribute === columnName;
       });
     };
 
diff --git a/packages/core/database/src/__tests__/unique.test.ts b/packages/core/database/src/__tests__/unique.test.ts
index 5947400e58..83bf3af567 100644
--- a/packages/core/database/src/__tests__/unique.test.ts
+++ b/packages/core/database/src/__tests__/unique.test.ts
@@ -69,6 +69,10 @@ describe('unique field', () => {
   });
 
   it('should transform empty string to null when field is unique', async () => {
+    if (db.options.dialect === 'mssql') {
+      // Empty strings will be converted to NULL, and in MSSQL, fields with unique constraints do not allow multiple NULL values to be inserted.
+      return;
+    }
     const User = db.collection({
       name: 'users',
       fields: [
diff --git a/packages/core/database/src/__tests__/view/list-view.test.ts b/packages/core/database/src/__tests__/view/list-view.test.ts
index 0cc535659b..83fe77d9b9 100644
--- a/packages/core/database/src/__tests__/view/list-view.test.ts
+++ b/packages/core/database/src/__tests__/view/list-view.test.ts
@@ -30,8 +30,8 @@ describe('list view', () => {
     const dropViewSQL2 = `DROP VIEW IF EXISTS test2`;
     await db.sequelize.query(dropViewSQL2);
 
-    const sql1 = `CREATE VIEW test1 AS SELECT 1`;
-    const sql2 = `CREATE VIEW test2 AS SELECT 2`;
+    const sql1 = `CREATE VIEW test1 AS SELECT 1 as value`;
+    const sql2 = `CREATE VIEW test2 AS SELECT 2 as value`;
 
     await db.sequelize.query(sql1);
     await db.sequelize.query(sql2);
diff --git a/packages/core/database/src/__tests__/view/view-inference.test.ts b/packages/core/database/src/__tests__/view/view-inference.test.ts
index f969d21e2d..4e28bad0b8 100644
--- a/packages/core/database/src/__tests__/view/view-inference.test.ts
+++ b/packages/core/database/src/__tests__/view/view-inference.test.ts
@@ -15,7 +15,6 @@ describe('view inference', function () {
 
   beforeEach(async () => {
     db = await createMockDatabase();
-    await db.clean({ drop: true });
   });
 
   afterEach(async () => {
@@ -23,7 +22,7 @@ describe('view inference', function () {
   });
 
   it('should infer field with alias', async () => {
-    if (db.options.dialect !== 'postgres') return;
+    if (!['postgres', 'mssql'].includes(db.options.dialect)) return;
 
     const UserCollection = db.collection({
       name: 'users',
@@ -57,7 +56,7 @@ describe('view inference', function () {
     const inferredFields = await ViewFieldInference.inferFields({
       db,
       viewName,
-      viewSchema: 'public',
+      viewSchema: db.options.dialect === 'mssql' ? 'dbo' : 'public',
     });
 
     expect(inferredFields['user_id_field'].source).toBe('users.id');
@@ -123,7 +122,7 @@ describe('view inference', function () {
     const inferredFields = await ViewFieldInference.inferFields({
       db,
       viewName,
-      viewSchema: 'public',
+      viewSchema: db.options.dialect === 'mssql' ? 'dbo' : 'public',
     });
 
     const createdAt = UserCollection.model.rawAttributes['createdAt'].field;
diff --git a/packages/core/database/src/collection.ts b/packages/core/database/src/collection.ts
index e73e7204f8..53e2fd2a6c 100644
--- a/packages/core/database/src/collection.ts
+++ b/packages/core/database/src/collection.ts
@@ -918,7 +918,7 @@ export class Collection<
   public getTableNameWithSchemaAsString() {
     const tableName = this.model.tableName;
 
-    if (this.collectionSchema() && this.db.inDialect('postgres')) {
+    if (this.collectionSchema() && (this.db.inDialect('postgres') || this.db.inDialect('mssql'))) {
       return `${this.collectionSchema()}.${tableName}`;
     }
 
diff --git a/packages/core/database/src/eager-loading/eager-loading-tree.ts b/packages/core/database/src/eager-loading/eager-loading-tree.ts
index 5a3bd167b5..5127ffdba2 100644
--- a/packages/core/database/src/eager-loading/eager-loading-tree.ts
+++ b/packages/core/database/src/eager-loading/eager-loading-tree.ts
@@ -333,19 +333,10 @@ export class EagerLoadingTree {
             };
           }
 
-          let order = params.order || orderOption(association);
-          if (node.model.sequelize.getDialect() === 'mssql') {
-            const seen = new Set();
-            order = order.filter((item) => {
-              const field = Array.isArray(item) ? item[0] : item.split(' ')[0];
-              return seen.has(field) ? false : seen.add(field);
-            });
-          }
-
           const findOptions = {
             where,
             attributes: node.attributes,
-            order,
+            order: params.order || orderOption(association),
             transaction,
           };
 
diff --git a/packages/core/database/src/index.ts b/packages/core/database/src/index.ts
index 7f11f143c8..931afbcad1 100644
--- a/packages/core/database/src/index.ts
+++ b/packages/core/database/src/index.ts
@@ -59,3 +59,4 @@ export { default as fieldTypeMap } from './view/field-type-map';
 
 export * from './view/view-inference';
 export { default as QueryInterface, TableInfo } from './query-interface/query-interface';
+export { OptionsParser, FieldSortOptions } from './options-parser';
diff --git a/packages/core/database/src/magic-attribute-model.ts b/packages/core/database/src/magic-attribute-model.ts
index b3ffc7b76e..5502303f01 100644
--- a/packages/core/database/src/magic-attribute-model.ts
+++ b/packages/core/database/src/magic-attribute-model.ts
@@ -156,12 +156,17 @@ export class MagicAttributeModel extends Model {
         // @ts-ignore
         if (!this._isAttribute(key)) {
           // @ts-ignore
-          if (key.includes('.') && this.constructor._jsonAttributes.has(key.split('.')[0])) {
+          if (this.isJsonField(key)) {
             // @ts-ignore
             const previousNestedValue = Dottie.get(this.dataValues, key);
             if (!_.isEqual(previousNestedValue, value)) {
               // @ts-ignore
               this._previousDataValues = _.cloneDeep(this._previousDataValues);
+              const previousValue = _.get(this.dataValues, key.split('.')[0]);
+              if (this.db.options.dialect === 'mssql' && _.isString(previousValue) && !_.isEmpty(previousValue)) {
+                // @ts-ignore
+                this.dataValues[key.split('.')[0]] = JSON.parse(previousValue);
+              }
               // @ts-ignore
               Dottie.set(this.dataValues, key, value);
               this.changed(key.split('.')[0], true);
@@ -226,6 +231,25 @@ export class MagicAttributeModel extends Model {
     return this;
   }
 
+  private isJsonField(key: string) {
+    const [column] = key.split('.');
+    if (!column) {
+      return false;
+    }
+    if (this.db.options.dialect === 'mssql') {
+      return this.getFieldByKey(column)?.type === 'json';
+    }
+    return (this.constructor as any)._jsonAttributes.has(column);
+  }
+
+  private getFieldByKey(key: string) {
+    const collection = this.db.modelNameCollectionMap.get(this.constructor.name);
+    if (!collection) {
+      return null;
+    }
+    return collection.getField(key);
+  }
+
   get(key?: any, value?: any): any {
     if (typeof key === 'string') {
       const [column] = key.split('.');
@@ -239,6 +263,10 @@ export class MagicAttributeModel extends Model {
       return _.get(options, key);
     }
     const data = super.get(key, value);
+    const previousValue = _.get(data, this.magicAttribute);
+    if (this.db.options.dialect === 'mssql' && _.isString(previousValue) && !_.isEmpty(previousValue)) {
+      _.set(data, this.magicAttribute, JSON.parse(previousValue));
+    }
     return {
       ..._.omit(data, this.magicAttribute),
       ...data[this.magicAttribute],
diff --git a/packages/core/database/src/options-parser.ts b/packages/core/database/src/options-parser.ts
index d7acc8e103..dddd8ee095 100644
--- a/packages/core/database/src/options-parser.ts
+++ b/packages/core/database/src/options-parser.ts
@@ -14,6 +14,7 @@ import { Database } from './database';
 import FilterParser from './filter-parser';
 import { Appends, Except, FindOptions } from './repository';
 import qs from 'qs';
+import _ from 'lodash';
 
 const debug = require('debug')('noco-database');
 
@@ -22,6 +23,10 @@ interface OptionsParserContext {
   targetKey?: string;
 }
 
+export interface FieldSortOptions {
+  nullsLast?: (model: ModelStatic<any>, field: string) => any;
+}
+
 export class OptionsParser {
   options: FindOptions;
   database: Database;
@@ -29,6 +34,7 @@ export class OptionsParser {
   model: ModelStatic<any>;
   filterParser: FilterParser;
   context: OptionsParserContext;
+  static fieldSortMap: Map<string, FieldSortOptions> = new Map();
 
   constructor(options: FindOptions, context: OptionsParserContext) {
     const { collection } = context;
@@ -68,6 +74,10 @@ export class OptionsParser {
     ]);
   }
 
+  static registerFieldSort(dialectName: string, options: FieldSortOptions) {
+    this.fieldSortMap.set(dialectName, options);
+  }
+
   isAssociation(key: string) {
     return this.model.associations[key] !== undefined;
   }
@@ -158,7 +168,12 @@ export class OptionsParser {
     }
 
     const orderParams = [];
-
+    // remove duplicate sort key, usage: sort = ['-id', 'id'], expect: ['-id']
+    const set = new Set();
+    sort = sort.filter((s) => {
+      const key = s.startsWith('-') ? s.slice(1) : s;
+      return !set.has(key) && set.add(key);
+    });
     for (const sortKey of sort) {
       let direction = sortKey.startsWith('-') ? 'DESC' : 'ASC';
       const sortField: Array<any> = sortKey.startsWith('-') ? sortKey.replace('-', '').split('.') : sortKey.split('.');
@@ -189,6 +204,13 @@ export class OptionsParser {
           orderParams.push([Sequelize.fn('ISNULL', Sequelize.col(`${this.model.name}.${sortField[0]}`))]);
         }
       }
+      const sortOptions = OptionsParser.fieldSortMap.get(this.database.options.dialect);
+      if (_.isFunction(sortOptions?.nullsLast)) {
+        const nullLast = sortOptions.nullsLast(this.model, sortField[0]);
+        if (nullLast) {
+          orderParams.push(nullLast);
+        }
+      }
       orderParams.push(sortField);
     }
 
diff --git a/packages/core/database/src/sync-runner.ts b/packages/core/database/src/sync-runner.ts
index 55ff057a72..5e3084d9cc 100644
--- a/packages/core/database/src/sync-runner.ts
+++ b/packages/core/database/src/sync-runner.ts
@@ -288,16 +288,28 @@ export class SyncRunner {
         }
 
         if (this.database.inDialect('mssql')) {
-          const constraintName = await this.sequelize.query(
-            `SELECT name FROM sys.indexes 
+          // 先检查是否是约束
+          const constraintCheck = await this.sequelize.query(
+            `SELECT OBJECT_NAME(object_id) as name
+             FROM sys.indexes 
              WHERE object_id = OBJECT_ID('${this.collection.quotedTableName()}')
-             AND name = '${existUniqueIndex.name}'`,
-            { ...options, type: 'SELECT' },
+             AND name = '${existUniqueIndex.name}'
+             AND is_unique_constraint = 1`,
+            {
+              type: 'SELECT',
+            },
           );
 
-          if (constraintName?.[0] && constraintName[0]['name']) {
+          if (constraintCheck.length > 0) {
+            // 如果是约束，使用 DROP CONSTRAINT
             await this.sequelize.query(
-              `ALTER TABLE ${this.collection.quotedTableName()} DROP CONSTRAINT ${constraintName[0]['name']};`,
+              `ALTER TABLE ${this.collection.quotedTableName()} DROP CONSTRAINT ${existUniqueIndex.name};`,
+              options,
+            );
+          } else {
+            // 如果是普通索引，使用 DROP INDEX
+            await this.sequelize.query(
+              `DROP INDEX ${existUniqueIndex.name} ON ${this.collection.quotedTableName()};`,
               options,
             );
           }
@@ -316,16 +328,32 @@ export class SyncRunner {
 
     // add unique index that not in database
     for (const uniqueAttribute of uniqueAttributes) {
-      // check index exists or not
-      const indexExists = existsUniqueIndexes.find((index) => {
-        return index.fields.length == 1 && index.fields[0].attribute == this.rawAttributes[uniqueAttribute].field;
+      const field = this.rawAttributes[uniqueAttribute].field;
+
+      // 检查是否存在包含该字段的索引（包括组合索引）
+      const hasFieldIndex = existsUniqueIndexes.some((index) => {
+        return index.fields[0].attribute === field;
       });
 
-      if (!indexExists) {
-        await this.queryInterface.addIndex(this.tableName, [this.rawAttributes[uniqueAttribute].field], {
+      if (!hasFieldIndex) {
+        // 检查是否有重复数据
+        const duplicateCheck = await this.sequelize.query(
+          `SELECT COUNT(*) as count, ${field} 
+           FROM ${this.collection.quotedTableName()} 
+           GROUP BY ${field} 
+           HAVING COUNT(*) > 1`,
+          { ...options, type: 'SELECT' },
+        );
+
+        if (duplicateCheck.length > 0) {
+          console.warn(`Cannot create unique index on ${field} due to duplicate values`);
+          continue;
+        }
+
+        await this.queryInterface.addIndex(this.tableName, [field], {
           unique: true,
           transaction: options?.transaction,
-          name: `${this.collection.tableName()}_${this.rawAttributes[uniqueAttribute].field}_uk`,
+          name: `${this.collection.tableName()}_${field}_uk`,
         });
       }
     }
diff --git a/packages/core/database/src/view/view-inference.ts b/packages/core/database/src/view/view-inference.ts
index 431a6958f7..5b2840e6ec 100644
--- a/packages/core/database/src/view/view-inference.ts
+++ b/packages/core/database/src/view/view-inference.ts
@@ -21,7 +21,26 @@ type InferredFieldResult = {
   [key: string]: InferredField;
 };
 
+type InferredViewSchema = {
+  display?: boolean;
+};
+
 export class ViewFieldInference {
+  static FieldTypeMap = FieldTypeMap;
+
+  static ViewSchemaConfig: Record<string, InferredViewSchema> = {
+    postgres: { display: true },
+    mysql: {},
+    sqlite: {},
+  };
+
+  static registerFieldTypes(key: string, fieldTypes: Record<string, any>) {
+    ViewFieldInference.FieldTypeMap[key] = {
+      ...(ViewFieldInference.FieldTypeMap[key] || {}),
+      ...fieldTypes,
+    };
+  }
+
   static extractTypeFromDefinition(typeDefinition) {
     const leftParenIndex = typeDefinition.indexOf('(');
 
@@ -32,13 +51,17 @@ export class ViewFieldInference {
     return typeDefinition.substring(0, leftParenIndex).toLowerCase().trim();
   }
 
+  static registerViewSchema(key: string, config: { display?: boolean }) {
+    ViewFieldInference.ViewSchemaConfig[key] = config;
+  }
+
   static async inferFields(options: {
     db: Database;
     viewName: string;
     viewSchema?: string;
   }): Promise<InferredFieldResult> {
     const { db } = options;
-    if (!db.inDialect('postgres')) {
+    if (!this.ViewSchemaConfig[db.options.dialect]?.display) {
       options.viewSchema = undefined;
     }
 
@@ -139,7 +162,7 @@ export class ViewFieldInference {
 
   static inferToFieldType(options: { name: string; type: string; dialect: string }) {
     const { dialect } = options;
-    const fieldTypeMap = FieldTypeMap[dialect];
+    const fieldTypeMap = this.FieldTypeMap[dialect];
 
     if (!options.type) {
       return {