text: /*-------------------------------------------------------------------------
   *
   * dbcommands.h
   *		Database management commands (create/drop database).
   *
   *
   * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
   * Portions Copyright (c) 1994, Regents of the University of California
   *
   * src/include/commands/dbcommands.h
   *
   *-------------------------------------------------------------------------
   */
  #ifndef DBCOMMANDS_H
  #define DBCOMMANDS_H
  
  #include "access/xlogreader.h"
  #include "catalog/objectaddress.h"
  #include "lib/stringinfo.h"
  #include "nodes/parsenodes.h"
  
  extern Oid	createdb(ParseState *pstate, const CreatedbStmt *stmt);
  extern void dropdb(const char *dbname, bool missing_ok, bool force);
  extern void DropDatabase(ParseState *pstate, DropdbStmt *stmt);
  extern ObjectAddress RenameDatabase(const char *oldname, const char *newname);
  extern Oid	AlterDatabase(ParseState *pstate, AlterDatabaseStmt *stmt, bool isTopLevel);
  extern Oid	AlterDatabaseSet(AlterDatabaseSetStmt *stmt);
  extern ObjectAddress AlterDatabaseOwner(const char *dbname, Oid newOwnerId);
  
  extern Oid	get_database_oid(const char *dbname, bool missing_ok);
  extern char *get_database_name(Oid dbid);
  
  extern void check_encoding_locale_matches(int encoding, const char *collate, const char *ctype);
  
  #endif							/* DBCOMMANDS_H */
  