✨ feat(table-designer): 补齐 MySQL 空间字段类型

- 补充 Geometry、Point、MultiPoint 等八种 MySQL 空间类型候选
- 保留自定义字段类型表达式在建表和改表 SQL 中的原样输出
- 增加空间类型候选及 POINT SRID 属性回归测试

Fixes #341

frontend/src/components/tableDesignerSchemaSql.test.ts

@@ -358,6 +358,28 @@ describe('tableDesignerSchemaSql', () => {
     expect(tdengineSql).not.toContain('AFTER');
   });
 
+  it('keeps freely entered MySQL spatial type attributes in schema SQL', () => {
+    const location = baseColumn({
+      _key: 'location',
+      name: 'location',
+      type: 'POINT SRID 4326',
+      nullable: 'NO',
+    });
+    const createSql = buildCreateTablePreviewSql({
+      tableName: 'places',
+      dbType: 'mysql',
+      columns: [location],
+    });
+    const alterSql = buildAlterTablePreviewSql(buildInput({
+      tableName: 'places',
+      originalColumns: [],
+      columns: [location],
+    }));
+
+    expect(createSql).toContain('`location` POINT SRID 4326 NOT NULL');
+    expect(alterSql).toContain('ADD COLUMN `location` POINT SRID 4326 NOT NULL');
+  });
+
   it('builds StarRocks create table preview with OLAP engine and conservative distribution', () => {
     const sql = buildCreateTablePreviewSql({
       tableName: 'sales.orders',

frontend/src/utils/sqlDialect.test.ts

@@ -79,6 +79,19 @@ describe('sqlDialect', () => {
     expect(values(resolveColumnTypeOptions('duckdb'))).toContain('STRUCT');
   });
 
+  it('offers every MySQL spatial column type', () => {
+    expect(values(resolveColumnTypeOptions('mysql'))).toEqual(expect.arrayContaining([
+      'geometry',
+      'point',
+      'linestring',
+      'polygon',
+      'multipoint',
+      'multilinestring',
+      'multipolygon',
+      'geometrycollection',
+    ]));
+  });
+
   it('resolves Apache IoTDB completion keywords and functions independently', () => {
     expect(resolveSqlKeywords('iotdb')).toEqual(expect.arrayContaining(['ALIGN BY DEVICE', 'SHOW TIMESERIES', 'WITH DATATYPE']));
     expect(names(resolveSqlFunctions('iotdb'))).toEqual(expect.arrayContaining(['DATE_BIN', 'DIFF', 'TOP_K']));

frontend/src/utils/sqlDialect.ts

@@ -303,6 +303,14 @@ const MYSQL_TYPES = optionValues([
   'timestamp',
   'year',
   'json',
+  'geometry',
+  'point',
+  'linestring',
+  'polygon',
+  'multipoint',
+  'multilinestring',
+  'multipolygon',
+  'geometrycollection',
   'enum',
   'set',
   'bit(1)',