【PG SQL】
一行流方式：
select count(*) from information_schema.table where table_schema='your schema' and table_type='BASE TABLE' and upper(table_name)=upper('your tableName')
层次化方式：
select count(*)
from information_schema.table
where
table_schema='your schema' and
table_type='BASE TABLE' and
upper(table_name)=upper('your tableName')
END
标签：upper,查表,是否,tableName,pg,table,your,schema From： https://www.cnblogs.com/pyhy/p/16600717.html