table names v_* not readable; Error: no such table

[chrisdane]

Hi

I can read all tables from a database successfully except the tables starting with v_ (packageVersion("DBI") = 1.1.3):

fin <- "/path/to/sqlite_db" # in shell: `file $fin` = SQLite 3.x database
db <- DBI::dbConnect(RSQLite::SQLite(), fin)
print(DBI::dbListTables(db))
# ... "v_n"              "v_nitrate_ts"     "v_pCO2"
tab <- DBI::dbGetQuery(db, "SELECT * FROM v_n LIMIT 5")
#Error: no such table: n
DBI::dbGetQuery(db, "SELECT * FROM v_nitrate_ts LIMIT 5")
#Error: no such table: main.v_nitrate
DBI::dbGetQuery(db, "SELECT * FROM v_pCO2 LIMIT 5")
#Error: no such table: pCO2

The file is 45G. Sorry, I don't know how to give a better example.

Thanks a lot for any help and kind regards,
Chris

[Kirill Müller]

Thanks. Can you please try:

tab <- DBI::dbGetQuery(db, "SELECT * FROM `v_n` LIMIT 5")

[chrisdane]

Same errors for all 3 tables named v_*.

[Kirill Müller]

Weird. Can the tables be queried from the sqlite command-line interface?

[chrisdane]

Exact same errors from command line (sqlite3 3.36.0). So that means the file is probably broken?

[chrisdane]

update:
Those v_* tables were added to the file as a schema, e.g.

sqlite> .schema v_n
CREATE VIEW v_n as select n.* where n.pqf1>2 and n.pqf2>2 and sqf>-1;

Sorry about my non-existing knowledge about sqlite. What is the problem? Why cant these schemes not be handled as a table?

Thanks a lot!

[Kirill Müller]

Thanks, this is weird indeed. A reproducible example would help here.