I am having issues working with the schemas in Redshift connecting using R.
url <- "jdbc:url:port/database?user=X123&password=fakepassword"
conn <- dbConnect(driver, url)
so I connect fine, and when I list tables I notice the default schema is public, but I don't want to work with that schema, how do I switch schemas ?
say if it is: lab_space
when I try this, it still lists tables in public:
dbListTables(conn, schema='lab_space')
tried this and I get an error:
SET search_path = lab_space;
> SET search_path = 'cust_usr';
Error: unexpected symbol in "SET search_path"
I must be doing something wrong ?
When I try to say check for a table and delete:
droptable <- dbSendQuery(conn, "drop table if exists lab_space.Tablebla")
it will drop it, but still give me an error:
Error in .verify.JDBC.result(r, "Unable to retrieve JDBC result set for ", :
Unable to retrieve JDBC result set for drop table if exists lab_space.Tablebla ([JDBC Driver]com.amazon.dsi.dataengine.impl.DSISimpleRowCountResult cannot be cast to com.amazon.dsi.dataengine.interfaces.IResultSet)
您可以使用dbSendUpdate
更改架构,以更改连接的search_path
:
dbSendUpdate(jdbc_con,"set search_path to my_schema")
ok, on this one I went with this driver
drv <- dbDriver("PostgreSQL")
and then things worked with no stupid warnings errors, I guess R and Redshift still has a lot of growing up to do, not sure :- )
In redshift, you can set the search path with set search_path to <schema_name>
(no equals) dbSendQuery(con,"set search_path to <schema_name>");
You may assign dbSendQuery() result to var if underlying sql returns a resultset. Here drop query doesn't return any result set Object. Try without assigning to any var.
dbSendQuery(conn, "drop table if exists lab_space.Tablebla")
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