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Introduce the 'force' option for the Drop Database command.

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This new option terminates the other sessions connected to the target
database and then drop it.  To terminate other sessions, the current user
must have desired permissions (same as pg_terminate_backend()).  We don't
allow to terminate the sessions if prepared transactions, active logical
replication slots or subscriptions are present in the target database.

Author: Pavel Stehule with changes by me
Reviewed-by: Dilip Kumar, Vignesh C, Ibrar Ahmed, Anthony Nowocien,
Ryan Lambert and Amit Kapila
Discussion: https://postgr.es/m/CAP_rwwmLJJbn70vLOZFpxGw3XD7nLB_7+NKz46H5EOO2k5H7OQ@mail.gmail.com
This commit is contained in:
Amit Kapila
2019-11-12 11:06:13 +05:30
parent 112caf9039
commit 1379fd537f
13 changed files with 248 additions and 14 deletions
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3
src/include/commands/dbcommands.h
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@ -20,7 +20,8 @@
#include "nodes/parsenodes.h"
extern Oid createdb(ParseState *pstate, const CreatedbStmt *stmt);
extern void dropdb(const char *dbname, bool missing_ok);
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);