feat(grid): copy column names with quoting options

apps/desktop/src/lib/__tests__/dataGrid/dataGridColumnNameCopy.spec.ts

@@ -0,0 +1,75 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { COLUMN_NAME_COPY_SEPARATOR_OPTIONS, columnNamesForCopy, formatColumnNamesForCopy, isColumnNameCopySeparator, loadColumnNameCopySeparator, saveColumnNameCopySeparator, supportsColumnNameQuoting } from "@/lib/dataGrid/dataGridColumnNameCopy";
+
+describe("dataGridColumnNameCopy", () => {
+  afterEach(() => {
+    vi.unstubAllGlobals();
+  });
+
+  it("joins names with every supported separator", () => {
+    const names = ["id", "type", "order"];
+    expect(formatColumnNamesForCopy(names, { separator: "tab" })).toBe("id\ttype\torder");
+    expect(formatColumnNamesForCopy(names, { separator: "comma" })).toBe("id,type,order");
+    expect(formatColumnNamesForCopy(names, { separator: "newline" })).toBe("id\ntype\norder");
+    expect(formatColumnNamesForCopy(names, { separator: "comma-newline" })).toBe("id,\ntype,\norder");
+  });
+
+  it("quotes names with the database-specific identifier quote", () => {
+    const names = ["type", "order"];
+    expect(formatColumnNamesForCopy(names, { separator: "comma", quote: true, databaseType: "mysql" })).toBe("`type`,`order`");
+    expect(formatColumnNamesForCopy(names, { separator: "comma", quote: true, databaseType: "clickhouse" })).toBe("`type`,`order`");
+    expect(formatColumnNamesForCopy(names, { separator: "comma", quote: true, databaseType: "postgres" })).toBe('"type","order"');
+    expect(formatColumnNamesForCopy(names, { separator: "comma", quote: true, databaseType: "sqlserver" })).toBe("[type],[order]");
+  });
+
+  it("escapes embedded quote characters when quoting", () => {
+    expect(formatColumnNamesForCopy(["a`b"], { separator: "tab", quote: true, databaseType: "mysql" })).toBe("`a``b`");
+    expect(formatColumnNamesForCopy(['a"b'], { separator: "tab", quote: true, databaseType: "postgres" })).toBe('"a""b"');
+  });
+
+  it("ignores the quote flag for databases without SQL identifier quoting", () => {
+    expect(formatColumnNamesForCopy(["type"], { separator: "tab", quote: true, databaseType: "mongodb" })).toBe("type");
+    expect(formatColumnNamesForCopy(["type"], { separator: "tab", quote: true, databaseType: "qdrant" })).toBe("type");
+    expect(formatColumnNamesForCopy(["type"], { separator: "tab", quote: true })).toBe("type");
+  });
+
+  it("reports quoting support only for SQL databases with a usable quote character", () => {
+    expect(supportsColumnNameQuoting("mysql")).toBe(true);
+    expect(supportsColumnNameQuoting("clickhouse")).toBe(true);
+    expect(supportsColumnNameQuoting("postgres")).toBe(true);
+    expect(supportsColumnNameQuoting("mongodb")).toBe(false);
+    expect(supportsColumnNameQuoting("redis")).toBe(false);
+    expect(supportsColumnNameQuoting("elasticsearch")).toBe(false);
+    expect(supportsColumnNameQuoting("qdrant")).toBe(false);
+    expect(supportsColumnNameQuoting("jdbc")).toBe(false);
+    expect(supportsColumnNameQuoting("iotdb")).toBe(false);
+    expect(supportsColumnNameQuoting(undefined)).toBe(false);
+  });
+
+  it("keeps hidden columns when copying all column names", () => {
+    const allColumns = ["id", "hidden_value", "created_at"];
+    const visibleColumns = ["id", "created_at"];
+    expect(columnNamesForCopy(allColumns, visibleColumns, "all")).toEqual(allColumns);
+    expect(columnNamesForCopy(allColumns, visibleColumns, "visible")).toEqual(visibleColumns);
+  });
+
+  it("validates separator values", () => {
+    for (const option of COLUMN_NAME_COPY_SEPARATOR_OPTIONS) expect(isColumnNameCopySeparator(option)).toBe(true);
+    expect(isColumnNameCopySeparator(";")).toBe(false);
+    expect(isColumnNameCopySeparator(null)).toBe(false);
+  });
+
+  it("persists the separator choice and falls back to tab for missing or invalid values", () => {
+    const store = new Map<string, string>();
+    vi.stubGlobal("localStorage", {
+      getItem: (key: string) => store.get(key) ?? null,
+      setItem: (key: string, value: string) => void store.set(key, value),
+      removeItem: (key: string) => void store.delete(key),
+    });
+    expect(loadColumnNameCopySeparator()).toBe("tab");
+    saveColumnNameCopySeparator("comma-newline");
+    expect(loadColumnNameCopySeparator()).toBe("comma-newline");
+    store.set("dbx-copy-column-names-separator", "bogus");
+    expect(loadColumnNameCopySeparator()).toBe("tab");
+  });
+});

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

@@ -39,6 +39,11 @@ describe("quoteTableIdentifier", () => {
     expect(quoteTableIdentifier("mysql", "orders")).toBe("`orders`");
   });
 
+  it("uses BigQuery quoted identifiers and escape sequences", () => {
+    expect(quoteTableIdentifier("bigquery", "order")).toBe("`order`");
+    expect(quoteTableIdentifier("bigquery", "a`b")).toBe("`a\\`b`");
+  });
+
   it("bracket-quotes sqlserver identifiers", () => {
     expect(quoteTableIdentifier("sqlserver", "orders")).toBe("[orders]");
   });