Add time partitioning field to google_bigquery_table resource

google/resource_bigquery_table.go

@@ -141,6 +141,15 @@ func resourceBigQueryTable() *schema.Resource {
 							Required:     true,
 							ValidateFunc: validation.StringInSlice([]string{"DAY"}, false),
 						},
+
+						// Type: [Optional] The field used to determine how to create a time-based
+						// partition. If time-based partitioning is enabled without this value, the
+						// table is partitioned based on the load time.
+						"field": {
+							Type:     schema.TypeString,
+							Optional: true,
+							ForceNew: true,
+						},
 					},
 				},
 			},
@@ -419,6 +428,10 @@ func expandTimePartitioning(configured interface{}) *bigquery.TimePartitioning {
 	raw := configured.([]interface{})[0].(map[string]interface{})
 	tp := &bigquery.TimePartitioning{Type: raw["type"].(string)}
 
+	if v, ok := raw["field"]; ok {
+		tp.Field = v.(string)
+	}
+
 	if v, ok := raw["expiration_ms"]; ok {
 		tp.ExpirationMs = int64(v.(int))
 	}
@@ -429,6 +442,10 @@ func expandTimePartitioning(configured interface{}) *bigquery.TimePartitioning {
 func flattenTimePartitioning(tp *bigquery.TimePartitioning) []map[string]interface{} {
 	result := map[string]interface{}{"type": tp.Type}
 
+	if tp.Field != "" {
+		result["field"] = tp.Field
+	}
+
 	if tp.ExpirationMs != 0 {
 		result["expiration_ms"] = tp.ExpirationMs
 	}

google/resource_bigquery_table_test.go

@@ -13,6 +13,7 @@ import (
 func TestAccBigQueryTable_Basic(t *testing.T) {
 	t.Parallel()
 
+	resourceName := "google_bigquery_table.test"
 	datasetID := fmt.Sprintf("tf_test_%s", acctest.RandString(10))
 	tableID := fmt.Sprintf("tf_test_%s", acctest.RandString(10))
 
@@ -24,18 +25,22 @@ func TestAccBigQueryTable_Basic(t *testing.T) {
 			{
 				Config: testAccBigQueryTable(datasetID, tableID),
 				Check: resource.ComposeTestCheckFunc(
-					testAccBigQueryTableExists(
-						"google_bigquery_table.test"),
+					testAccBigQueryTableExists(resourceName),
 				),
 			},
 
 			{
 				Config: testAccBigQueryTableUpdated(datasetID, tableID),
 				Check: resource.ComposeTestCheckFunc(
-					testAccBigQueryTableExists(
-						"google_bigquery_table.test"),
+					testAccBigQueryTableExists(resourceName),
 				),
 			},
+
+			{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
 		},
 	})
 }
@@ -197,10 +202,15 @@ resource "google_bigquery_table" "test" {
 
   time_partitioning {
     type = "DAY"
+    field = "ts"	
   }
 
   schema = <<EOH
 [
+  {
+    "name": "ts",
+    "type": "TIMESTAMP"
+  },
   {
     "name": "city",
     "type": "RECORD",

website/docs/r/bigquery_table.html.markdown

@@ -81,6 +81,10 @@ The `time_partitioning` block supports:
 * `expiration_ms` -  (Optional) Number of milliseconds for which to keep the
     storage for a partition.
 
+* `field` - (Optional) The field used to determine how to create a time-based
+    partition. If time-based partitioning is enabled without this value, the
+    table is partitioned based on the load time.
+
 * `type` - (Required) The only type supported is DAY, which will generate
     one partition per day based on data loading time.