i use
my steps
1. create a new database ckdb on mysql, then  create table t1(a int, primary key(a)); and insert some rows
2. SET allow_experimental_database_materialize_mysql=1; at clickhouse, 
3. CREATE DATABASE ckdb ENGINE = MaterializeMySQL('127.0.0.1:3306', 'ckdb', 'root', 'A123b_456');
4. use ckdb and select * from t1 ok
5. create table dzm as select * from others in mysql ----> cannot see dzm in clickhouse, but if select * from t1, reports
```
Code: 48. DB::Exception: Received from localhost:9000. DB::Exception: The ckdb.dzm cannot be materialized, because there is no primary keys..
```
6. create table t2(a int,b int primary a);----> cannot see t2 in clickhouse, , but if select * from t1, reports
```
Code: 44. DB::Exception: Received from localhost:9000. DB::Exception: Sorting key cannot contain nullable columns.
```
<del>7. if i drop ckdb and recreate it, all tables can be selected </del>
7.if there are some 'bad' tables in a database, all tables in that database cannot be selected

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{
    if (expr.arguments->children.empty())
        return NamesAndTypesList{};
    ASTPtr temp_ast = expr.clone();
    auto syntax = TreeRewriter(context).analyze(temp_ast, columns);
    auto expression = ExpressionAnalyzer(temp_ast, syntax, context).getActions(false);
    return expression->getRequiredColumnsWithTypes();
}
static inline std::tuple<NamesAndTypesList, NamesAndTypesList, NamesAndTypesList, NameSet> getKeys(
    ASTExpressionList * columns_define, ASTExpressionList * indices_define, const Context & context, const NamesAndTypesList & columns)
{
    NameSet increment_columns;
    auto keys = makeASTFunction("tuple");
    auto unique_keys = makeASTFunction("tuple");
    auto primary_keys = makeASTFunction("tuple");
    if (indices_define && !indices_define->children.empty())
    {
        for (const auto & declare_index_ast : indices_define->children)
        {
            const auto & declare_index = declare_index_ast->as<MySQLParser::ASTDeclareIndex>();
            
            if (startsWith(declare_index->index_type, "KEY_"))