referential_constraints.cc

/* Copyright (c) 2017, 2023, Oracle and/or its affiliates.

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   it under the terms of the GNU General Public License, version 2.0,
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#include "sql/dd/impl/system_views/referential_constraints.h"

namespace dd {
namespace system_views {

const Referential_constraints &Referential_constraints::instance() {
  static Referential_constraints *s_instance = new Referential_constraints();
  return *s_instance;
}

Referential_constraints::Referential_constraints() {
  m_target_def.set_view_name(view_name());

  m_target_def.add_field(FIELD_CONSTRAINT_CATALOG, "CONSTRAINT_CATALOG",
                         "cat.name");
  m_target_def.add_field(FIELD_CONSTRAINT_SCHEMA, "CONSTRAINT_SCHEMA",
                         "sch.name");
  m_target_def.add_field(FIELD_CONSTRAINT_NAME, "CONSTRAINT_NAME",
                         "fk.name COLLATE utf8mb3_tolower_ci");
  m_target_def.add_field(FIELD_UNIQUE_CONSTRAINT_CATALOG,
                         "UNIQUE_CONSTRAINT_CATALOG",
                         "fk.referenced_table_catalog");
  m_target_def.add_field(FIELD_UNIQUE_CONSTRAINT_SCHEMA,
                         "UNIQUE_CONSTRAINT_SCHEMA",
                         "fk.referenced_table_schema");
  m_target_def.add_field(FIELD_UNIQUE_CONSTRAINT_NAME, "UNIQUE_CONSTRAINT_NAME",
                         "fk.unique_constraint_name");
  m_target_def.add_field(FIELD_MATCH_OPTION, "MATCH_OPTION", "fk.match_option");
  m_target_def.add_field(FIELD_UPDATE_RULE, "UPDATE_RULE", "fk.update_rule");
  m_target_def.add_field(FIELD_DELETE_RULE, "DELETE_RULE", "fk.delete_rule");
  m_target_def.add_field(FIELD_TABLE_NAME, "TABLE_NAME", "tbl.name");
  m_target_def.add_field(FIELD_REFERENCED_TABLE_NAME, "REFERENCED_TABLE_NAME",
                         "fk.referenced_table_name");

  m_target_def.add_from("mysql.foreign_keys fk");
  m_target_def.add_from("JOIN mysql.tables tbl ON fk.table_id = tbl.id");
  m_target_def.add_from("JOIN mysql.schemata sch ON fk.schema_id= sch.id");
  m_target_def.add_from("JOIN mysql.catalogs cat ON cat.id=sch.catalog_id");

  m_target_def.add_where("CAN_ACCESS_TABLE(sch.name, tbl.name)");
  m_target_def.add_where("AND IS_VISIBLE_DD_OBJECT(tbl.hidden)");
}

}  // namespace system_views
}  // namespace dd