Merge pull request #75 from edharper01/master

Support for parameters with long data types
alexbrainman · Aug 19, 2016 · b78637d · b78637d
2 parents 2fd1af7 + fd440c1
commit b78637d
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diff --git a/mssql_test.go b/mssql_test.go
@@ -1253,6 +1253,7 @@ var paramTypeTests = []struct {
 	{"datetime overflow", "datetime", time.Date(2013, 9, 9, 14, 07, 15, 123e6, time.Local)},
 	// binary blobs
 	{"small blob", "varbinary", make([]byte, 1)},
+	{"very large blob", "varbinary(max)", make([]byte, 100000)},
 	{"7999 large image", "image", make([]byte, 7999)},
 	{"8000 large image", "image", make([]byte, 8000)},
 	{"8001 large image", "image", make([]byte, 8001)},

diff --git a/param.go b/param.go
@@ -174,6 +174,18 @@ func ExtractParameters(h api.SQLHSTMT) ([]Parameter, error) {
 			continue
 		}
 		p.isDescribed = true
+		// SQL Server MAX types (varchar(max), nvarchar(max),
+		// varbinary(max) are identified by size = 0
+		if p.Size == 0 {
+			switch p.SQLType {
+			case api.SQL_VARBINARY:
+				p.SQLType = api.SQL_LONGVARBINARY
+			case api.SQL_VARCHAR:
+				p.SQLType = api.SQL_LONGVARCHAR
+			case api.SQL_WVARCHAR:
+				p.SQLType = api.SQL_WLONGVARCHAR
+			}
+		}
 	}
 	return ps, nil
 }