feat(import): add SQL script import with dialect-aware parsing

apps/desktop/src/lib/__tests__/table/tableImport.spec.ts

@@ -115,6 +115,26 @@ describe("tableImport", () => {
     expect(buildTableImportParseOptions({ ...baseSettings, format: "csv", sheetName: "Second" }).sheetName).toBeNull();
   });
 
+  it("passes the text encoding for SQL script sources like delimited text", () => {
+    const settings = {
+      delimiter: ",",
+      textEncoding: "gbk" as const,
+      titleRow: 1,
+      dataStartRow: 2,
+      lastDataRow: 0,
+      trimValues: false,
+      emptyStringAsNull: true,
+      jsonShape: "auto" as const,
+      databaseType: "mysql" as const,
+    };
+
+    expect(buildTableImportParseOptions({ ...settings, format: "sql" }).encoding).toBe("gbk");
+    expect(buildTableImportParseOptions({ ...settings, format: "sql" }).sqlDialect).toBe("mysql");
+    expect(buildTableImportParseOptions({ ...settings, format: "delimited" }).encoding).toBe("gbk");
+    expect(buildTableImportParseOptions({ ...settings, format: "delimited" }).sqlDialect).toBeNull();
+    expect(buildTableImportParseOptions({ ...settings, format: "excel" }).encoding).toBeNull();
+  });
+
   it("suggests create-table data types from preview rows", () => {
     expect(
       suggestImportTargetDataTypes(

apps/desktop/src/lib/backend/tauri.ts

@@ -4477,7 +4477,7 @@ export async function sortTablesByFkDependency(options: SortTablesByFkOptions):
 export type TableImportMode = "append" | "truncate";
 export type TableImportStatus = "running" | "done" | "error" | "cancelled";
 export type TableImportPhase = "preparing" | "detectingEncoding" | "reading" | "writing" | "finalizing" | "done";
-export type TableImportSourceFormat = "csv" | "tsv" | "delimited" | "json" | "excel";
+export type TableImportSourceFormat = "csv" | "tsv" | "delimited" | "json" | "excel" | "sql";
 export type TableImportJsonShape = "auto" | "objects" | "arrays";
 export type TableImportTextEncoding = "auto" | "utf8" | "gbk" | "utf16Le" | "utf16Be";
 
@@ -4499,6 +4499,7 @@ export interface TableImportParseOptions {
   sheetName?: string | null;
   sheetIndex?: number | null;
   jsonShape?: TableImportJsonShape | null;
+  sqlDialect?: DatabaseType | null;
 }
 
 export interface TableImportPreviewRequest {

apps/desktop/src/lib/table/tableImport.ts

@@ -86,6 +86,7 @@ export interface TableImportParseSettings {
   emptyStringAsNull: boolean;
   sheetName?: string;
   jsonShape: TableImportJsonShape;
+  databaseType?: DatabaseType | null;
 }
 
 export function defaultTableImportEmptyStringAsNull(format: TableImportSourceFormat): boolean {
@@ -94,9 +95,11 @@ export function defaultTableImportEmptyStringAsNull(format: TableImportSourceFor
 
 export function buildTableImportParseOptions(settings: TableImportParseSettings): TableImportParseOptions {
   const isDelimited = settings.format === "csv" || settings.format === "tsv" || settings.format === "delimited";
+  // SQL 脚本与分隔文本一样是纯文本源，需要传递编码供后端解码（支持 GBK 等常见转储编码）
+  const isTextSource = isDelimited || settings.format === "sql";
   return {
     delimiter: settings.format === "tsv" ? "\\t" : settings.format === "csv" ? "," : settings.delimiter,
-    encoding: isDelimited ? settings.textEncoding : null,
+    encoding: isTextSource ? settings.textEncoding : null,
     titleRow: settings.titleRow,
     dataStartRow: settings.dataStartRow,
     lastDataRow: settings.lastDataRow,
@@ -104,6 +107,8 @@ export function buildTableImportParseOptions(settings: TableImportParseSettings)
     emptyStringAsNull: settings.emptyStringAsNull,
     sheetName: settings.format === "excel" ? settings.sheetName || null : null,
     jsonShape: settings.format === "json" ? settings.jsonShape : null,
+    // SQL 脚本需要按源方言解析字符串转义与标识符大小写（取目标连接的数据库类型）
+    sqlDialect: settings.format === "sql" ? (settings.databaseType ?? null) : null,
   };
 }