List tables within a Postgres schema using R

问题

I'm connecting to a PostgreSQL db using R and the RPostgreSQL package. The db has a number of schemas and I would like to know which tables are associated with a specific schema.

So far I have tried:

dbListTables(db, schema="sch2014")
dbGetQuery(db, "dt sch2014.*")
dbGetQuery(db, "\dt sch2014.*")
dbGetQuery(db, "\\dt sch2014.*")

None of which have worked.

This related question also exists: Setting the schema name in postgres using R, which would solve the problem by defining the schema at the connection. However, it's not yet been answered!

回答1:

Reading this answer https://stackoverflow.com/a/15644435/2773500 helped. I can use the following to get the tables associated with a specific schema:

dbGetQuery(db,
           "SELECT table_name FROM information_schema.tables
                   WHERE table_schema='sch2014'")

回答2:

You can use the table_schema option rather than just schema to see a list of tables within the specific schema. So keeping with your example code snippet above, the below line should work:

dbListTables(db, table_schema="sch2014")

来源：https://stackoverflow.com/questions/43720911/list-tables-within-a-postgres-schema-using-r