Fall back to raw SQL for COMPRESSION options

Column compression options are not representable by `pgroll` `Column`
definitions.

pkg/sql2pgroll/create_table.go

@@ -122,10 +122,14 @@ func convertColumnDef(col *pgq.ColumnDef) (*migrations.Column, error) {
 // canConvertColumnDef returns true iff `col` can be converted to a pgroll
 // `Column` definition.
 func canConvertColumnDef(col *pgq.ColumnDef) bool {
+	switch {
 	// Column storage options are not supported
-	if col.GetStorageName() != "" {
+	case col.GetStorageName() != "":
+		return false
+		// Column compression options are not supported
+	case col.GetCompression() != "":
 		return false
+	default:
+		return true
 	}
-
-	return true
 }

pkg/sql2pgroll/create_table_test.go

@@ -113,8 +113,11 @@ func TestUnconvertableCreateTableStatements(t *testing.T) {
 		"CREATE TABLE foo(a int, LIKE bar)",
 		"CREATE TABLE foo(LIKE bar)",
 
-		// column `STORAGE` options are not supported
+		// Column `STORAGE` options are not supported
 		"CREATE TABLE foo(a int STORAGE PLAIN)",
+
+		// Column compression options are not supported
+		"CREATE TABLE foo(a text COMPRESSION pglz)",
 	}
 
 	for _, sql := range tests {