摘要：
select engine,partition_key,primary_key,total_rows,total_bytes,comment,\n" + "metadata_modification_time \n" + "from system.tables \n" + "where databa 阅读全文
摘要：
--建表案例 CREATE TABLE gas_use_test ( id serial PRIMARY KEY NOT NULL, tenantId integer NOT NULL, meterNo varchar(255) unique NOT NULL , communicationDate 阅读全文