Netezza / custom odbcDataType (#847)

* netezzaSQL: customize odbcDataType * add missing file * NEWS: update
r-dbi · Sep 12, 2024 · 5a858ba · 5a858ba
1 parent 5f51af7
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Showing 6 changed files with 29 additions and 6 deletions.
diff --git a/DESCRIPTION b/DESCRIPTION
@@ -67,6 +67,7 @@ Collate:
     'driver-hive.R'
     'driver-impala.R'
     'driver-mysql.R'
+    'driver-netezza.R'
     'driver-oracle.R'
     'driver-postgres.R'
     'driver-redshift.R'

diff --git a/NAMESPACE b/NAMESPACE
@@ -35,6 +35,7 @@ exportClasses(HDB)
 exportClasses(Hive)
 exportClasses(Impala)
 exportClasses(MySQL)
+exportClasses(NetezzaSQL)
 exportClasses(OdbcConnection)
 exportClasses(OdbcDriver)
 exportClasses(OdbcResult)

diff --git a/NEWS.md b/NEWS.md
@@ -1,5 +1,7 @@
 # odbc (development version)
 
+* Netezza: Improved data type inference for character columns (#847).
+
 * Added functions `odbcEditDrivers()`, `odbcEditSystemDSN()`, and
   `odbcEditUserDSN()` to provide a shorthand for 
   `file.edit(odbcListConfig()[[i]])`. The helpers only support macOS and 

diff --git a/R/driver-netezza.R b/R/driver-netezza.R
@@ -0,0 +1,16 @@
+#' @export
+#' @rdname DBI-classes
+setClass("NetezzaSQL", contains = "OdbcConnection")
+
+#' @export
+#' @rdname odbcDataType
+#' @usage NULL
+setMethod("odbcDataType", "NetezzaSQL",
+  function(con, obj, ...) {
+    switch_type(
+      obj,
+      character = varchar(obj),
+      callNextMethod(con, obj, ...)
+    )
+  }
+)
diff --git a/man/DBI-classes.Rd b/man/DBI-classes.Rd
diff --git a/man/odbcDataType.Rd b/man/odbcDataType.Rd