| JSON representation | 
|---|
| { // Union field | 
Union field type 
.
 type 
can be only one of the following:
value 
 object (  
 UdmColumnValue 
 
)
list 
 object (  
 UdmColumnList 
 
)
UdmColumnValue
| JSON representation | 
|---|
| { // Union field | 
Union field value 
.
 value 
can be only one of the following:
nullVal 
 boolean 
boolVal 
 boolean 
bytesVal 
 string ( bytes 
format) 
A base64-encoded string.
doubleVal 
 number 
int64Val 
 string ( int64 
format) 
uint64Val 
 string 
stringVal 
 string 
dateVal 
 object (  
 Date 
 
)
protoVal 
 object 
An object containing fields of an arbitrary type. An additional field "@type" 
contains a URI identifying the type. Example: { "id": 1234, "@type": "types.example.com/standard/id" } 
.
UdmColumnList
| JSON representation | 
|---|
|  { 
 "values" 
 : 
 [ 
 { 
 object (  | 
| Fields | |
|---|---|
| values[] |   | 

