add duckdb readonly

Author: aplavin

Project.toml

@@ -1,7 +1,7 @@
 name = "SQLCollections"
 uuid = "3934435e-e6e6-4fea-a5c0-3a716143d619"
 authors = ["Alexander Plavin <alexander@plav.in>"]
-version = "0.1.12"
+version = "0.1.13"
 
 [deps]
 AccessorsExtra = "33016aad-b69d-45be-9359-82a41f556fd4"

ext/DuckDBExt.jl

@@ -3,6 +3,16 @@ module DuckDBExt
 using DuckDB
 import SQLCollections: _copy_impl!, rowtable
 
+# XXX: should be upstreamed in https://github.com/duckdb/duckdb/pull/17585
+DuckDB.DB(file; readonly::Bool=false) =
+	if readonly
+		cnf = DuckDB.Config()
+		DuckDB.set_config(cnf, "access_mode", "READ_ONLY")
+		DuckDB.DB(file, cnf)
+	else
+		DuckDB.DB(file)
+	end
+
 function _copy_impl!(conn::DuckDB.DB, rows, tblname::Symbol)
 	tmp_tblname = String(rand('a':'z', 50))
 	DuckDB.register_table(conn, rows, tmp_tblname)