如何在Java中执行多个postgres查询？

Question

I know how to run a simple "select * from table" in java postgres jdbc connector.

But how do we run two or more statements, where statement2 depends on statement1 using java/JDBC-Postgres?

Example #1:
SET search_path TO a,b,c;
Select * from table1;

Example #2:
Create temporary table tempabc ... definition and value;
Select * from tableDEF inner join tempabc USING (tableDEF.refid = tableDEF.id) where table a=1;

This question may already be answered but I cannot find duplicates for it. If nothing in staightforward JDBC-Postgres way let me know other ways. Thanks!

Answer 1

This may be what you are looking for: Batch statements. The caveat is that your statements must be insert/update/delete (actions).

http://www.mkyong.com/jdbc/jdbc-preparedstatement-example-batch-update/

JavaDoc for addBatch

Alternatively, you could execute a stored proc and return cursors. More on that here: https://stackoverflow.com/a/10804730/559095

Answer 2

对于第一个问题，您可以使用setSchema更改搜索路径。至于第二个问题，只要您使用相同的连接，临时表就会在那里。