innodb_foreign.cc

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   it under the terms of the GNU General Public License, version 2.0,
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#include "sql/dd/impl/system_views/innodb_foreign.h"

namespace dd {
namespace system_views {

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

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

  m_target_def.add_field(
      FIELD_FOREIGN_ID, "ID",
      "CONCAT(sch.name, '/', fk.name)" + m_target_def.fs_name_collation());
  m_target_def.add_field(FIELD_FOREIGN_NAME, "FOR_NAME",
                         "CONCAT(sch.name, '/', tbl.name)");
  m_target_def.add_field(
      FIELD_REF_NAME, "REF_NAME",
      "CONCAT(fk.referenced_table_schema, '/', fk.referenced_table_name)");
  m_target_def.add_field(FIELD_N_COLS, "N_COLS", "COUNT(*)");
  m_target_def.add_field(FIELD_TYPE, "TYPE",
                         "IF(fk.delete_rule='CASCADE',1,0)|"
                         "IF(fk.delete_rule='SET NULL',2,0)|"
                         "IF(fk.update_rule='CASCADE',4,0)|"
                         "IF(fk.update_rule='SET NULL',8,0)|"
                         "IF(fk.delete_rule='NO ACTION',16,0)|"
                         "IF(fk.update_rule='NO ACTION',32,0)");

  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.foreign_key_column_usage col "
      "ON fk.id=col.foreign_key_id");

  m_target_def.add_where("NOT tbl.type = 'VIEW'");
  m_target_def.add_where("AND tbl.hidden = 'Visible'");
  m_target_def.add_where("AND tbl.se_private_id IS NOT NULL");
  m_target_def.add_where("AND tbl.engine='INNODB'");
  m_target_def.add_where("GROUP BY fk.id");
}

}  // namespace system_views
}  // namespace dd