diff --git a/apps/desktop/src/lib/__tests__/sql/semantic/tokens.spec.ts b/apps/desktop/src/lib/__tests__/sql/semantic/tokens.spec.ts
index e92c973f9c..dcec531aec 100644
--- a/apps/desktop/src/lib/__tests__/sql/semantic/tokens.spec.ts
+++ b/apps/desktop/src/lib/__tests__/sql/semantic/tokens.spec.ts
@@ -13,6 +13,12 @@ describe("sqlSemanticTokens", () => {
     expect(tokens.some((token) => token.kind === "string" && token.text === "'it''s ok'")).toBe(true);
   });
 
+  it("tokenizes Unicode identifier prefixes as complete word tokens", () => {
+    const tokens = tokenizeSqlSemantic("SELECT 名称 客户名称 𠀀字段", "sqlserver");
+
+    expect(tokens.filter((token) => token.kind === "word").map((token) => token.text)).toEqual(["SELECT", "名称", "客户名称", "𠀀字段"]);
+  });
+
   it("marks comments and string literals as suppressed contexts", () => {
     const sql = "select * from users -- user.";
     const tokens = tokenizeSqlSemantic(sql);
diff --git a/apps/desktop/src/lib/sql/semantic/tokens.ts b/apps/desktop/src/lib/sql/semantic/tokens.ts
index aa0ce6ef78..38ca9e0b5d 100644
--- a/apps/desktop/src/lib/sql/semantic/tokens.ts
+++ b/apps/desktop/src/lib/sql/semantic/tokens.ts
@@ -1,7 +1,12 @@
 import type { SqlSemanticSpan, SqlSemanticToken } from "@/lib/sql/semantic/types";
 
-const WORD_START = /[A-Za-z_@$#]/;
-const WORD_PART = /[A-Za-z0-9_@$#]/;
+const WORD_START = /[A-Za-z_@$#\p{ID_Start}]/u;
+const WORD_PART = /[A-Za-z0-9_@$#\p{ID_Continue}]/u;
+
+function characterAt(input: string, index: number): string {
+  const codePoint = input.codePointAt(index);
+  return codePoint === undefined ? "" : String.fromCodePoint(codePoint);
+}
 
 function token(kind: SqlSemanticToken["kind"], text: string, start: number, end: number, depth: number, quote?: string, closed?: boolean): SqlSemanticToken {
   return {
@@ -108,7 +113,7 @@ export function tokenizeSqlSemantic(input: string, dialectId = "mysql", options?
 
   while (index < input.length) {
     const start = index;
-    const ch = input[index] ?? "";
+    const ch = characterAt(input, index);
     const next = input[index + 1] ?? "";
 
     if (/\s/.test(ch)) {
@@ -190,8 +195,12 @@ export function tokenizeSqlSemantic(input: string, dialectId = "mysql", options?
     }
 
     if (ch === ":" || ch === "?") {
-      index += 1;
-      while (index < input.length && WORD_PART.test(input[index] ?? "")) index += 1;
+      index += ch.length;
+      while (index < input.length) {
+        const part = characterAt(input, index);
+        if (!WORD_PART.test(part)) break;
+        index += part.length;
+      }
       tokens.push(token("parameter", input.slice(start, index), start, index, depth));
       continue;
     }
@@ -204,8 +213,12 @@ export function tokenizeSqlSemantic(input: string, dialectId = "mysql", options?
     }
 
     if (WORD_START.test(ch)) {
-      index += 1;
-      while (index < input.length && WORD_PART.test(input[index] ?? "") && !(dialectId === "postgres" && input[index] === "#")) index += 1;
+      index += ch.length;
+      while (index < input.length) {
+        const part = characterAt(input, index);
+        if (!WORD_PART.test(part) || (dialectId === "postgres" && part === "#")) break;
+        index += part.length;
+      }
       tokens.push(token("word", input.slice(start, index), start, index, depth));
       continue;
     }
@@ -218,7 +231,7 @@ export function tokenizeSqlSemantic(input: string, dialectId = "mysql", options?
       continue;
     }
 
-    index += 1;
+    index += ch.length;
     tokens.push(token("operator", ch, start, index, depth));
   }
 
diff --git a/packages/app-tests/sqlCompletion.test.ts b/packages/app-tests/sqlCompletion.test.ts
index 8775ccdff2..0173e6979b 100644
--- a/packages/app-tests/sqlCompletion.test.ts
+++ b/packages/app-tests/sqlCompletion.test.ts
@@ -969,6 +969,52 @@ test("replaces typed unquoted prefixes through semantic SQL completion", () => {
   }
 });
 
+test("replaces typed Unicode prefixes through semantic SQL Server completion", () => {
+  for (const fixture of [
+    { prefix: "名", column: "名称" },
+    { prefix: "客户", column: "客户名称" },
+  ] as const) {
+    const sql = `select * from test where ${fixture.prefix}`;
+    const cursor = sql.length;
+    const options = { databaseType: "sqlserver", dialect: "sqlserver" } as const;
+    const semanticModel = buildSqlSemanticModel(sql, cursor, options);
+    const context = sqlCompletionContextFromSemantic(semanticModel, getSqlCompletionContext(sql, cursor, options));
+    const items = buildSqlCompletionItemsFromContext(context, {
+      tables: [{ name: "test", schema: "dbo", type: "table" }],
+      columnsByTable: new Map([["test", [{ name: fixture.column, table: "test", schema: "dbo" }]]]),
+      ...options,
+    });
+    const replacement = prepareSqlCompletionReplacement(sql, cursor, context, items);
+    const column = replacement.items.find((item) => item.type === "column" && item.label === fixture.column);
+
+    assert.ok(column, fixture.prefix);
+    assert.deepEqual(semanticModel.cursorIntent.replacementRange, { start: cursor - fixture.prefix.length, end: cursor }, fixture.prefix);
+    assert.deepEqual(context.replacementRange, { start: cursor - fixture.prefix.length, end: cursor }, fixture.prefix);
+    assert.equal(replacement.from, cursor - fixture.prefix.length, fixture.prefix);
+    assert.equal(`${sql.slice(0, replacement.from)}${column.apply ?? column.label}${sql.slice(cursor)}`, `select * from test where ${fixture.column}`, fixture.prefix);
+  }
+});
+
+test("replaces a Unicode prefix inside an open SQL Server bracket identifier", () => {
+  const sql = "select * from test where [名";
+  const cursor = sql.length;
+  const options = { databaseType: "sqlserver", dialect: "sqlserver" } as const;
+  const semanticModel = buildSqlSemanticModel(sql, cursor, options);
+  const context = sqlCompletionContextFromSemantic(semanticModel, getSqlCompletionContext(sql, cursor, options));
+  const items = buildSqlCompletionItemsFromContext(context, {
+    tables: [{ name: "test", schema: "dbo", type: "table" }],
+    columnsByTable: new Map([["test", [{ name: "名称", table: "test", schema: "dbo" }]]]),
+    ...options,
+  });
+  const replacement = prepareSqlCompletionReplacement(sql, cursor, context, items);
+  const column = replacement.items.find((item) => item.type === "column" && item.label === "名称");
+
+  assert.ok(column);
+  assert.deepEqual(context.replacementRange, { start: cursor - 2, end: cursor });
+  assert.equal(replacement.from, cursor - 2);
+  assert.equal(`${sql.slice(0, replacement.from)}${column.apply ?? column.label}${sql.slice(cursor)}`, "select * from test where [名称]");
+});
+
 test("suggests same-prefix tables while editing double-quoted Oracle-family identifiers", () => {
   for (const databaseType of ["oracle", "dameng"] as const) {
     const markedSql = 'SELECT * FROM "Fo|"';