[BigQuery] Use BIGNUMERIC (#1063)

clients/shared/merge.go

@@ -64,7 +64,7 @@ func Merge(ctx context.Context, dwh destination.DataWarehouse, tableData *optimi
 		}
 	}()
 
-	if err = dwh.PrepareTemporaryTable(ctx, tableData, tableConfig, temporaryTableID, tableID, types.AdditionalSettings{}, true); err != nil {
+	if err = dwh.PrepareTemporaryTable(ctx, tableData, tableConfig, temporaryTableID, tableID, types.AdditionalSettings{ColumnSettings: opts.ColumnSettings}, true); err != nil {
 		return fmt.Errorf("failed to prepare temporary table: %w", err)
 	}
 

lib/typing/decimal/details.go

@@ -72,7 +72,7 @@ func (d Details) RedshiftKind() string {
 // BigQueryKind - is inferring logic from: https://cloud.google.com/bigquery/docs/reference/standard-sql/data-types#decimal_types
 func (d Details) BigQueryKind(numericTypeForVariableNumeric bool) string {
 	if numericTypeForVariableNumeric && d.precision == PrecisionNotSpecified {
-		return "NUMERIC"
+		return "BIGNUMERIC"
 	}
 
 	if d.isNumeric() {

lib/typing/decimal/details_test.go

@@ -15,7 +15,7 @@ func TestDetails_BigQueryKind(t *testing.T) {
 	}
 	{
 		// numericTypeForVariableNumeric = true
-		assert.Equal(t, "NUMERIC", details.BigQueryKind(true))
+		assert.Equal(t, "BIGNUMERIC", details.BigQueryKind(true))
 	}
 }