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66 lines
2.5 KiB
Protocol Buffer
66 lines
2.5 KiB
Protocol Buffer
// Copyright 2025 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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syntax = "proto3";
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package google.cloud.bigquery.v2;
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import "google/api/field_behavior.proto";
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import "google/cloud/bigquery/v2/table_reference.proto";
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option go_package = "cloud.google.com/go/bigquery/v2/apiv2/bigquerypb;bigquerypb";
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option java_outer_classname = "TableConstraintsProto";
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option java_package = "com.google.cloud.bigquery.v2";
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// Represents the primary key constraint on a table's columns.
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message PrimaryKey {
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// Required. The columns that are composed of the primary key constraint.
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repeated string columns = 1 [(google.api.field_behavior) = REQUIRED];
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}
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// The pair of the foreign key column and primary key column.
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message ColumnReference {
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// Required. The column that composes the foreign key.
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string referencing_column = 1 [(google.api.field_behavior) = REQUIRED];
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// Required. The column in the primary key that are referenced by the
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// referencing_column.
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string referenced_column = 2 [(google.api.field_behavior) = REQUIRED];
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}
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// Represents a foreign key constraint on a table's columns.
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message ForeignKey {
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// Optional. Set only if the foreign key constraint is named.
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string name = 1 [(google.api.field_behavior) = OPTIONAL];
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// Required. The table that holds the primary key and is referenced by this
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// foreign key.
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TableReference referenced_table = 2 [(google.api.field_behavior) = REQUIRED];
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// Required. The columns that compose the foreign key.
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repeated ColumnReference column_references = 3
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[(google.api.field_behavior) = REQUIRED];
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}
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// The TableConstraints defines the primary key and foreign key.
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message TableConstraints {
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// Optional. Represents a primary key constraint on a table's columns.
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// Present only if the table has a primary key.
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// The primary key is not enforced.
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PrimaryKey primary_key = 1 [(google.api.field_behavior) = OPTIONAL];
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// Optional. Present only if the table has a foreign key.
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// The foreign key is not enforced.
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repeated ForeignKey foreign_keys = 2 [(google.api.field_behavior) = OPTIONAL];
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}
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