fix mysql tenant database schema cleanup

scripts/apply_sql_file.go

@@ -0,0 +1,49 @@
+//go:build ignore
+
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"os"
+	"strings"
+
+	_ "github.com/go-sql-driver/mysql"
+)
+
+func main() {
+	dsn := strings.TrimPrefix(os.Getenv("IM_MYSQL_DSN"), "mysql://")
+	sqlFile := os.Getenv("IM_SQL_FILE")
+	if dsn == "" || sqlFile == "" {
+		fatal("IM_MYSQL_DSN and IM_SQL_FILE are required")
+	}
+	if !strings.Contains(dsn, "multiStatements=") {
+		sep := "?"
+		if strings.Contains(dsn, "?") {
+			sep = "&"
+		}
+		dsn += sep + "multiStatements=true"
+	}
+
+	body, err := os.ReadFile(sqlFile)
+	if err != nil {
+		fatal(err)
+	}
+	db, err := sql.Open("mysql", dsn)
+	if err != nil {
+		fatal(err)
+	}
+	defer db.Close()
+	if err = db.Ping(); err != nil {
+		fatal(err)
+	}
+	if _, err = db.Exec(string(body)); err != nil {
+		fatal(err)
+	}
+	fmt.Println("applied", sqlFile)
+}
+
+func fatal(v any) {
+	fmt.Fprintln(os.Stderr, v)
+	os.Exit(1)
+}