fix: handle MySQL backup SQL import

src/lib/createDatabaseSql.ts

@@ -0,0 +1,43 @@
+import type { DatabaseType } from "@/types/database";
+import { quoteTableIdentifier } from "./tableSelectSql";
+
+const MYSQL_COMPATIBLE_PROFILES = new Set([
+  "mysql",
+  "mariadb",
+  "tidb",
+  "oceanbase",
+  "doris",
+  "starrocks",
+  "custom_mysql",
+]);
+const MYSQL_COMPATIBLE_TYPES = new Set<DatabaseType>(["mysql", "doris", "starrocks", "goldendb"]);
+
+export interface CreateDatabaseSqlOptions {
+  databaseType?: DatabaseType;
+  driverProfile?: string | null;
+  name: string;
+  charset?: string;
+  collation?: string;
+}
+
+export function supportsCreateDatabaseCharset(databaseType?: DatabaseType, driverProfile?: string | null): boolean {
+  return (
+    MYSQL_COMPATIBLE_TYPES.has(databaseType as DatabaseType) ||
+    (!!driverProfile && MYSQL_COMPATIBLE_PROFILES.has(driverProfile))
+  );
+}
+
+export function buildCreateDatabaseSql(options: CreateDatabaseSqlOptions): string {
+  const name = quoteTableIdentifier(options.databaseType, options.name);
+  const charset = cleanSqlOption(options.charset);
+  const collation = cleanSqlOption(options.collation);
+  if (!supportsCreateDatabaseCharset(options.databaseType, options.driverProfile) || !charset) {
+    return `CREATE DATABASE ${name};`;
+  }
+  const collateClause = collation ? ` COLLATE ${collation}` : "";
+  return `CREATE DATABASE ${name} CHARACTER SET ${charset}${collateClause};`;
+}
+
+function cleanSqlOption(value: string | undefined): string {
+  return value?.trim().replace(/[;\s]+/g, "") ?? "";
+}