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https://git.postgresql.org/git/postgresql.git
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de28dc9a04
Both plannable queries and utility commands are now always executed within Portals, which have been revamped so that they can handle the load (they used to be good only for single SELECT queries). Restructure code to push command-completion-tag selection logic out of postgres.c, so that it won't have to be duplicated between simple and extended queries. initdb forced due to addition of a field to Query nodes.
1413 lines
31 KiB
C
1413 lines
31 KiB
C
/*-------------------------------------------------------------------------
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*
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* utility.c
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* Contains functions which control the execution of the POSTGRES utility
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* commands. At one time acted as an interface between the Lisp and C
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* systems.
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*
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* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.198 2003/05/02 20:54:35 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "access/heapam.h"
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#include "catalog/catalog.h"
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#include "catalog/namespace.h"
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#include "catalog/pg_shadow.h"
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#include "commands/async.h"
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#include "commands/cluster.h"
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#include "commands/comment.h"
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#include "commands/copy.h"
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#include "commands/conversioncmds.h"
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#include "commands/dbcommands.h"
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#include "commands/defrem.h"
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#include "commands/explain.h"
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#include "commands/lockcmds.h"
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#include "commands/portalcmds.h"
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#include "commands/prepare.h"
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#include "commands/proclang.h"
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#include "commands/schemacmds.h"
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#include "commands/sequence.h"
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#include "commands/tablecmds.h"
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#include "commands/trigger.h"
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#include "commands/typecmds.h"
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#include "commands/user.h"
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#include "commands/vacuum.h"
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#include "commands/view.h"
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#include "miscadmin.h"
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#include "nodes/makefuncs.h"
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#include "parser/parse_clause.h"
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#include "parser/parse_expr.h"
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#include "parser/parse_type.h"
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#include "rewrite/rewriteDefine.h"
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#include "rewrite/rewriteRemove.h"
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#include "tcop/utility.h"
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#include "utils/acl.h"
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#include "utils/guc.h"
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#include "utils/lsyscache.h"
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#include "utils/syscache.h"
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#include "access/xlog.h"
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/*
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* Error-checking support for DROP commands
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*/
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struct kindstrings
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{
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char kind;
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char *indef_article;
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char *name;
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char *command;
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};
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static struct kindstrings kindstringarray[] = {
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{RELKIND_RELATION, "a", "table", "TABLE"},
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{RELKIND_SEQUENCE, "a", "sequence", "SEQUENCE"},
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{RELKIND_VIEW, "a", "view", "VIEW"},
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{RELKIND_INDEX, "an", "index", "INDEX"},
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{RELKIND_COMPOSITE_TYPE, "a", "type", "TYPE"},
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{'\0', "a", "???", "???"}
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};
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static void
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DropErrorMsg(char *relname, char wrongkind, char rightkind)
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{
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struct kindstrings *rentry;
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struct kindstrings *wentry;
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for (rentry = kindstringarray; rentry->kind != '\0'; rentry++)
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if (rentry->kind == rightkind)
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break;
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Assert(rentry->kind != '\0');
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for (wentry = kindstringarray; wentry->kind != '\0'; wentry++)
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if (wentry->kind == wrongkind)
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break;
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/* wrongkind could be something we don't have in our table... */
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if (wentry->kind != '\0')
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elog(ERROR, "\"%s\" is not %s %s. Use DROP %s to remove %s %s",
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relname, rentry->indef_article, rentry->name,
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wentry->command, wentry->indef_article, wentry->name);
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else
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elog(ERROR, "\"%s\" is not %s %s",
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relname, rentry->indef_article, rentry->name);
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}
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static void
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CheckDropPermissions(RangeVar *rel, char rightkind)
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{
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struct kindstrings *rentry;
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Oid relOid;
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HeapTuple tuple;
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Form_pg_class classform;
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for (rentry = kindstringarray; rentry->kind != '\0'; rentry++)
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if (rentry->kind == rightkind)
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break;
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Assert(rentry->kind != '\0');
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relOid = RangeVarGetRelid(rel, true);
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if (!OidIsValid(relOid))
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elog(ERROR, "%s \"%s\" does not exist", rentry->name, rel->relname);
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tuple = SearchSysCache(RELOID,
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ObjectIdGetDatum(relOid),
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0, 0, 0);
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if (!HeapTupleIsValid(tuple))
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elog(ERROR, "%s \"%s\" does not exist", rentry->name, rel->relname);
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classform = (Form_pg_class) GETSTRUCT(tuple);
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if (classform->relkind != rightkind)
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DropErrorMsg(rel->relname, classform->relkind, rightkind);
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/* Allow DROP to either table owner or schema owner */
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if (!pg_class_ownercheck(relOid, GetUserId()) &&
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!pg_namespace_ownercheck(classform->relnamespace, GetUserId()))
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aclcheck_error(ACLCHECK_NOT_OWNER, rel->relname);
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if (!allowSystemTableMods && IsSystemClass(classform))
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elog(ERROR, "%s \"%s\" is a system %s",
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rentry->name, rel->relname, rentry->name);
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ReleaseSysCache(tuple);
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}
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static void
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CheckOwnership(RangeVar *rel, bool noCatalogs)
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{
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Oid relOid;
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HeapTuple tuple;
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relOid = RangeVarGetRelid(rel, false);
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tuple = SearchSysCache(RELOID,
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ObjectIdGetDatum(relOid),
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0, 0, 0);
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if (!HeapTupleIsValid(tuple))
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elog(ERROR, "Relation \"%s\" does not exist", rel->relname);
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if (!pg_class_ownercheck(relOid, GetUserId()))
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aclcheck_error(ACLCHECK_NOT_OWNER, rel->relname);
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if (noCatalogs)
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{
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if (!allowSystemTableMods &&
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IsSystemClass((Form_pg_class) GETSTRUCT(tuple)))
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elog(ERROR, "relation \"%s\" is a system catalog",
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rel->relname);
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}
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ReleaseSysCache(tuple);
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}
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static void
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check_xact_readonly(Node *parsetree)
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{
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if (!XactReadOnly)
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return;
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/*
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* Note: Commands that need to do more complicated checking are
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* handled elsewhere.
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*/
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switch (nodeTag(parsetree))
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{
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case T_AlterDatabaseSetStmt:
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case T_AlterDomainStmt:
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case T_AlterGroupStmt:
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case T_AlterSeqStmt:
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case T_AlterTableStmt:
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case T_RenameStmt:
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case T_AlterUserStmt:
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case T_AlterUserSetStmt:
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case T_CommentStmt:
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case T_DefineStmt:
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case T_CreateCastStmt:
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case T_CreateConversionStmt:
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case T_CreatedbStmt:
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case T_CreateDomainStmt:
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case T_CreateFunctionStmt:
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case T_CreateGroupStmt:
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case T_IndexStmt:
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case T_CreatePLangStmt:
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case T_CreateOpClassStmt:
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case T_RuleStmt:
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case T_CreateSchemaStmt:
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case T_CreateSeqStmt:
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case T_CreateStmt:
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case T_CreateTrigStmt:
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case T_CompositeTypeStmt:
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case T_CreateUserStmt:
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case T_ViewStmt:
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case T_RemoveAggrStmt:
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case T_DropCastStmt:
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case T_DropStmt:
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case T_DropdbStmt:
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case T_RemoveFuncStmt:
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case T_DropGroupStmt:
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case T_DropPLangStmt:
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case T_RemoveOperStmt:
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case T_RemoveOpClassStmt:
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case T_DropPropertyStmt:
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case T_DropUserStmt:
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case T_GrantStmt:
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case T_TruncateStmt:
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elog(ERROR, "transaction is read-only");
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break;
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default:
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/*nothing*/;
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}
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}
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/*
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* ProcessUtility
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* general utility function invoker
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*
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* parsetree: the parse tree for the utility statement
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* dest: where to send results
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* completionTag: points to a buffer of size COMPLETION_TAG_BUFSIZE
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* in which to store a command completion status string.
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*
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* completionTag is only set nonempty if we want to return a nondefault
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* status (currently, only used for MOVE/FETCH).
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*
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* completionTag may be NULL if caller doesn't want a status string.
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*/
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void
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ProcessUtility(Node *parsetree,
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CommandDest dest,
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char *completionTag)
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{
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check_xact_readonly(parsetree);
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if (completionTag)
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completionTag[0] = '\0';
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switch (nodeTag(parsetree))
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{
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/*
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* ******************** transactions ********************
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*/
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case T_TransactionStmt:
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{
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TransactionStmt *stmt = (TransactionStmt *) parsetree;
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switch (stmt->kind)
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{
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case TRANS_STMT_BEGIN:
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BeginTransactionBlock();
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break;
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/*
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* START TRANSACTION, as defined by SQL99:
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* Identical to BEGIN, except that it takes a few
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* additional options.
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*/
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case TRANS_STMT_START:
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{
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BeginTransactionBlock();
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if (stmt->options)
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{
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List *head;
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foreach(head, stmt->options)
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{
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DefElem *item = (DefElem *) lfirst(head);
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if (strcmp(item->defname, "transaction_isolation")==0)
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SetPGVariable("transaction_isolation",
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makeList1(item->arg), false);
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else if (strcmp(item->defname, "transaction_read_only")==0)
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SetPGVariable("transaction_read_only",
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makeList1(item->arg), false);
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}
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}
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}
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break;
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case TRANS_STMT_COMMIT:
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EndTransactionBlock();
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break;
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case TRANS_STMT_ROLLBACK:
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UserAbortTransactionBlock();
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break;
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}
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}
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break;
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/*
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* Portal (cursor) manipulation
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*/
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case T_DeclareCursorStmt:
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PerformCursorOpen((DeclareCursorStmt *) parsetree, dest);
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break;
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case T_ClosePortalStmt:
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{
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ClosePortalStmt *stmt = (ClosePortalStmt *) parsetree;
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PerformPortalClose(stmt->portalname);
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}
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break;
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case T_FetchStmt:
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PerformPortalFetch((FetchStmt *) parsetree, dest,
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completionTag);
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break;
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/*
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* relation and attribute manipulation
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*/
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case T_CreateSchemaStmt:
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CreateSchemaCommand((CreateSchemaStmt *) parsetree);
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break;
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case T_CreateStmt:
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{
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Oid relOid;
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relOid = DefineRelation((CreateStmt *) parsetree,
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RELKIND_RELATION);
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/*
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* Let AlterTableCreateToastTable decide if this one needs
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* a secondary relation too.
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*/
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CommandCounterIncrement();
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AlterTableCreateToastTable(relOid, true);
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}
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break;
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case T_DropStmt:
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{
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DropStmt *stmt = (DropStmt *) parsetree;
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List *arg;
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foreach(arg, stmt->objects)
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{
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List *names = (List *) lfirst(arg);
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RangeVar *rel;
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switch (stmt->removeType)
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{
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case DROP_TABLE:
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rel = makeRangeVarFromNameList(names);
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CheckDropPermissions(rel, RELKIND_RELATION);
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RemoveRelation(rel, stmt->behavior);
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break;
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case DROP_SEQUENCE:
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rel = makeRangeVarFromNameList(names);
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CheckDropPermissions(rel, RELKIND_SEQUENCE);
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RemoveRelation(rel, stmt->behavior);
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break;
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case DROP_VIEW:
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rel = makeRangeVarFromNameList(names);
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CheckDropPermissions(rel, RELKIND_VIEW);
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RemoveView(rel, stmt->behavior);
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break;
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case DROP_INDEX:
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rel = makeRangeVarFromNameList(names);
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CheckDropPermissions(rel, RELKIND_INDEX);
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RemoveIndex(rel, stmt->behavior);
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break;
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case DROP_TYPE:
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/* RemoveType does its own permissions checks */
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RemoveType(names, stmt->behavior);
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break;
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case DROP_DOMAIN:
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/*
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* RemoveDomain does its own permissions
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* checks
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*/
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RemoveDomain(names, stmt->behavior);
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break;
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case DROP_CONVERSION:
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DropConversionCommand(names, stmt->behavior);
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break;
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case DROP_SCHEMA:
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/*
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* RemoveSchema does its own permissions
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* checks
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*/
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RemoveSchema(names, stmt->behavior);
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break;
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}
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/*
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* We used to need to do CommandCounterIncrement()
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* here, but now it's done inside performDeletion().
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*/
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}
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}
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break;
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case T_TruncateStmt:
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{
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TruncateStmt *stmt = (TruncateStmt *) parsetree;
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TruncateRelation(stmt->relation);
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}
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break;
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case T_CommentStmt:
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CommentObject((CommentStmt *) parsetree);
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break;
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case T_CopyStmt:
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DoCopy((CopyStmt *) parsetree);
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break;
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case T_PrepareStmt:
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PrepareQuery((PrepareStmt *) parsetree);
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break;
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case T_ExecuteStmt:
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ExecuteQuery((ExecuteStmt *) parsetree, dest);
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break;
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case T_DeallocateStmt:
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DeallocateQuery((DeallocateStmt *) parsetree);
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break;
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/*
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* schema
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*/
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case T_RenameStmt:
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{
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RenameStmt *stmt = (RenameStmt *) parsetree;
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Oid relid;
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CheckOwnership(stmt->relation, true);
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relid = RangeVarGetRelid(stmt->relation, false);
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switch (stmt->renameType)
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{
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case RENAME_TABLE:
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{
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/*
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* RENAME TABLE requires that we (still) hold
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* CREATE rights on the containing namespace,
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* as well as ownership of the table.
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*/
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Oid namespaceId = get_rel_namespace(relid);
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AclResult aclresult;
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aclresult = pg_namespace_aclcheck(namespaceId,
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GetUserId(),
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ACL_CREATE);
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if (aclresult != ACLCHECK_OK)
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aclcheck_error(aclresult,
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get_namespace_name(namespaceId));
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renamerel(relid, stmt->newname);
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break;
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}
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case RENAME_COLUMN:
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renameatt(relid,
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stmt->oldname, /* old att name */
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stmt->newname, /* new att name */
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interpretInhOption(stmt->relation->inhOpt), /* recursive? */
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false); /* recursing already? */
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break;
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case RENAME_TRIGGER:
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renametrig(relid,
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stmt->oldname, /* old att name */
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stmt->newname); /* new att name */
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break;
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case RENAME_RULE:
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elog(ERROR, "ProcessUtility: Invalid type for RENAME: %d",
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stmt->renameType);
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break;
|
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default:
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elog(ERROR, "ProcessUtility: Invalid type for RENAME: %d",
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stmt->renameType);
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}
|
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}
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break;
|
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|
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/* various Alter Table forms */
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|
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case T_AlterTableStmt:
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{
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AlterTableStmt *stmt = (AlterTableStmt *) parsetree;
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Oid relid;
|
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|
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relid = RangeVarGetRelid(stmt->relation, false);
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|
|
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/*
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|
* Some or all of these functions are recursive to cover
|
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* inherited things, so permission checks are done there.
|
|
*/
|
|
switch (stmt->subtype)
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{
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case 'A': /* ADD COLUMN */
|
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|
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/*
|
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* Recursively add column to table and, if
|
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* requested, to descendants
|
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*/
|
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AlterTableAddColumn(relid,
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interpretInhOption(stmt->relation->inhOpt),
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(ColumnDef *) stmt->def);
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break;
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case 'T': /* ALTER COLUMN DEFAULT */
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/*
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* Recursively alter column default for table and,
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* if requested, for descendants
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*/
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AlterTableAlterColumnDefault(relid,
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interpretInhOption(stmt->relation->inhOpt),
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stmt->name,
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stmt->def);
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break;
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case 'N': /* ALTER COLUMN DROP NOT NULL */
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AlterTableAlterColumnDropNotNull(relid,
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interpretInhOption(stmt->relation->inhOpt),
|
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stmt->name);
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break;
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case 'n': /* ALTER COLUMN SET NOT NULL */
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AlterTableAlterColumnSetNotNull(relid,
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interpretInhOption(stmt->relation->inhOpt),
|
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stmt->name);
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break;
|
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case 'S': /* ALTER COLUMN STATISTICS */
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case 'M': /* ALTER COLUMN STORAGE */
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|
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/*
|
|
* Recursively alter column statistics for table
|
|
* and, if requested, for descendants
|
|
*/
|
|
AlterTableAlterColumnFlags(relid,
|
|
interpretInhOption(stmt->relation->inhOpt),
|
|
stmt->name,
|
|
stmt->def,
|
|
&(stmt->subtype));
|
|
break;
|
|
case 'D': /* DROP COLUMN */
|
|
|
|
/*
|
|
* Recursively drop column from table and, if
|
|
* requested, from descendants
|
|
*/
|
|
AlterTableDropColumn(relid,
|
|
interpretInhOption(stmt->relation->inhOpt),
|
|
false,
|
|
stmt->name,
|
|
stmt->behavior);
|
|
break;
|
|
case 'C': /* ADD CONSTRAINT */
|
|
|
|
/*
|
|
* Recursively add constraint to table and, if
|
|
* requested, to descendants
|
|
*/
|
|
AlterTableAddConstraint(relid,
|
|
interpretInhOption(stmt->relation->inhOpt),
|
|
(List *) stmt->def);
|
|
break;
|
|
case 'X': /* DROP CONSTRAINT */
|
|
|
|
/*
|
|
* Recursively drop constraint from table and, if
|
|
* requested, from descendants
|
|
*/
|
|
AlterTableDropConstraint(relid,
|
|
interpretInhOption(stmt->relation->inhOpt),
|
|
stmt->name,
|
|
stmt->behavior);
|
|
break;
|
|
case 'E': /* CREATE TOAST TABLE */
|
|
AlterTableCreateToastTable(relid, false);
|
|
break;
|
|
case 'U': /* ALTER OWNER */
|
|
/* check that we are the superuser */
|
|
if (!superuser())
|
|
elog(ERROR, "ALTER TABLE: permission denied");
|
|
/* get_usesysid raises an error if no such user */
|
|
AlterTableOwner(relid,
|
|
get_usesysid(stmt->name));
|
|
break;
|
|
case 'L': /* CLUSTER ON */
|
|
AlterTableClusterOn(relid, stmt->name);
|
|
break;
|
|
case 'o': /* ADD OIDS */
|
|
AlterTableAlterOids(relid,
|
|
interpretInhOption(stmt->relation->inhOpt),
|
|
false);
|
|
break;
|
|
default: /* oops */
|
|
elog(ERROR, "ProcessUtility: Invalid type for AlterTableStmt: %d",
|
|
stmt->subtype);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case T_AlterDomainStmt:
|
|
{
|
|
AlterDomainStmt *stmt = (AlterDomainStmt *) parsetree;
|
|
|
|
/*
|
|
* Some or all of these functions are recursive to cover
|
|
* inherited things, so permission checks are done there.
|
|
*/
|
|
switch (stmt->subtype)
|
|
{
|
|
case 'T': /* ALTER COLUMN DEFAULT */
|
|
|
|
/*
|
|
* Recursively alter column default for table and,
|
|
* if requested, for descendants
|
|
*/
|
|
AlterDomainDefault(stmt->typename,
|
|
stmt->def);
|
|
break;
|
|
case 'N': /* ALTER COLUMN DROP NOT NULL */
|
|
AlterDomainNotNull(stmt->typename,
|
|
false);
|
|
break;
|
|
case 'O': /* ALTER COLUMN SET NOT NULL */
|
|
AlterDomainNotNull(stmt->typename,
|
|
true);
|
|
break;
|
|
case 'C': /* ADD CONSTRAINT */
|
|
AlterDomainAddConstraint(stmt->typename,
|
|
stmt->def);
|
|
break;
|
|
case 'X': /* DROP CONSTRAINT */
|
|
AlterDomainDropConstraint(stmt->typename,
|
|
stmt->name,
|
|
stmt->behavior);
|
|
break;
|
|
case 'U': /* OWNER TO */
|
|
/* check that we are the superuser */
|
|
if (!superuser())
|
|
elog(ERROR, "ALTER DOMAIN: permission denied");
|
|
/* get_usesysid raises an error if no such user */
|
|
AlterTypeOwner(stmt->typename,
|
|
get_usesysid(stmt->name));
|
|
break;
|
|
default: /* oops */
|
|
elog(ERROR, "ProcessUtility: Invalid type for AlterDomainStmt: %d",
|
|
stmt->subtype);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
|
|
case T_GrantStmt:
|
|
ExecuteGrantStmt((GrantStmt *) parsetree);
|
|
break;
|
|
|
|
/*
|
|
* ******************************** object creation /
|
|
* destruction ********************************
|
|
*
|
|
*/
|
|
case T_DefineStmt:
|
|
{
|
|
DefineStmt *stmt = (DefineStmt *) parsetree;
|
|
|
|
switch (stmt->kind)
|
|
{
|
|
case DEFINE_STMT_AGGREGATE:
|
|
DefineAggregate(stmt->defnames, stmt->definition);
|
|
break;
|
|
case DEFINE_STMT_OPERATOR:
|
|
DefineOperator(stmt->defnames, stmt->definition);
|
|
break;
|
|
case DEFINE_STMT_TYPE:
|
|
DefineType(stmt->defnames, stmt->definition);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case T_CompositeTypeStmt: /* CREATE TYPE (composite) */
|
|
{
|
|
CompositeTypeStmt *stmt = (CompositeTypeStmt *) parsetree;
|
|
|
|
DefineCompositeType(stmt->typevar, stmt->coldeflist);
|
|
}
|
|
break;
|
|
|
|
case T_ViewStmt: /* CREATE VIEW */
|
|
{
|
|
ViewStmt *stmt = (ViewStmt *) parsetree;
|
|
|
|
DefineView(stmt->view, stmt->query, stmt->replace);
|
|
}
|
|
break;
|
|
|
|
case T_CreateFunctionStmt: /* CREATE FUNCTION */
|
|
CreateFunction((CreateFunctionStmt *) parsetree);
|
|
break;
|
|
|
|
case T_IndexStmt: /* CREATE INDEX */
|
|
{
|
|
IndexStmt *stmt = (IndexStmt *) parsetree;
|
|
|
|
CheckOwnership(stmt->relation, true);
|
|
|
|
DefineIndex(stmt->relation, /* relation */
|
|
stmt->idxname, /* index name */
|
|
stmt->accessMethod, /* am name */
|
|
stmt->indexParams, /* parameters */
|
|
stmt->unique,
|
|
stmt->primary,
|
|
stmt->isconstraint,
|
|
(Expr *) stmt->whereClause,
|
|
stmt->rangetable);
|
|
}
|
|
break;
|
|
|
|
case T_RuleStmt: /* CREATE RULE */
|
|
DefineQueryRewrite((RuleStmt *) parsetree);
|
|
break;
|
|
|
|
case T_CreateSeqStmt:
|
|
DefineSequence((CreateSeqStmt *) parsetree);
|
|
break;
|
|
|
|
case T_AlterSeqStmt:
|
|
AlterSequence((AlterSeqStmt *) parsetree);
|
|
break;
|
|
|
|
case T_RemoveAggrStmt:
|
|
RemoveAggregate((RemoveAggrStmt *) parsetree);
|
|
break;
|
|
|
|
case T_RemoveFuncStmt:
|
|
RemoveFunction((RemoveFuncStmt *) parsetree);
|
|
break;
|
|
|
|
case T_RemoveOperStmt:
|
|
RemoveOperator((RemoveOperStmt *) parsetree);
|
|
break;
|
|
|
|
case T_CreatedbStmt:
|
|
createdb((CreatedbStmt *) parsetree);
|
|
break;
|
|
|
|
case T_AlterDatabaseSetStmt:
|
|
AlterDatabaseSet((AlterDatabaseSetStmt *) parsetree);
|
|
break;
|
|
|
|
case T_DropdbStmt:
|
|
{
|
|
DropdbStmt *stmt = (DropdbStmt *) parsetree;
|
|
|
|
dropdb(stmt->dbname);
|
|
}
|
|
break;
|
|
|
|
/* Query-level asynchronous notification */
|
|
case T_NotifyStmt:
|
|
{
|
|
NotifyStmt *stmt = (NotifyStmt *) parsetree;
|
|
|
|
Async_Notify(stmt->relation->relname);
|
|
}
|
|
break;
|
|
|
|
case T_ListenStmt:
|
|
{
|
|
ListenStmt *stmt = (ListenStmt *) parsetree;
|
|
|
|
Async_Listen(stmt->relation->relname, MyProcPid);
|
|
}
|
|
break;
|
|
|
|
case T_UnlistenStmt:
|
|
{
|
|
UnlistenStmt *stmt = (UnlistenStmt *) parsetree;
|
|
|
|
Async_Unlisten(stmt->relation->relname, MyProcPid);
|
|
}
|
|
break;
|
|
|
|
case T_LoadStmt:
|
|
{
|
|
LoadStmt *stmt = (LoadStmt *) parsetree;
|
|
|
|
closeAllVfds(); /* probably not necessary... */
|
|
load_file(stmt->filename);
|
|
}
|
|
break;
|
|
|
|
case T_ClusterStmt:
|
|
cluster((ClusterStmt *) parsetree);
|
|
break;
|
|
|
|
case T_VacuumStmt:
|
|
vacuum((VacuumStmt *) parsetree);
|
|
break;
|
|
|
|
case T_ExplainStmt:
|
|
ExplainQuery((ExplainStmt *) parsetree, dest);
|
|
break;
|
|
|
|
case T_VariableSetStmt:
|
|
{
|
|
VariableSetStmt *n = (VariableSetStmt *) parsetree;
|
|
|
|
/*
|
|
* Special cases for special SQL syntax that
|
|
* effectively sets more than one variable per
|
|
* statement.
|
|
*/
|
|
if (strcmp(n->name, "TRANSACTION")==0)
|
|
{
|
|
List *head;
|
|
|
|
foreach(head, n->args)
|
|
{
|
|
DefElem *item = (DefElem *) lfirst(head);
|
|
|
|
if (strcmp(item->defname, "transaction_isolation")==0)
|
|
SetPGVariable("transaction_isolation",
|
|
makeList1(item->arg), n->is_local);
|
|
else if (strcmp(item->defname, "transaction_read_only")==0)
|
|
SetPGVariable("transaction_read_only",
|
|
makeList1(item->arg), n->is_local);
|
|
}
|
|
}
|
|
else if (strcmp(n->name, "SESSION CHARACTERISTICS")==0)
|
|
{
|
|
List *head;
|
|
|
|
foreach(head, n->args)
|
|
{
|
|
DefElem *item = (DefElem *) lfirst(head);
|
|
|
|
if (strcmp(item->defname, "transaction_isolation")==0)
|
|
SetPGVariable("default_transaction_isolation",
|
|
makeList1(item->arg), n->is_local);
|
|
else if (strcmp(item->defname, "transaction_read_only")==0)
|
|
SetPGVariable("default_transaction_read_only",
|
|
makeList1(item->arg), n->is_local);
|
|
}
|
|
}
|
|
else
|
|
SetPGVariable(n->name, n->args, n->is_local);
|
|
}
|
|
break;
|
|
|
|
case T_VariableShowStmt:
|
|
{
|
|
VariableShowStmt *n = (VariableShowStmt *) parsetree;
|
|
|
|
GetPGVariable(n->name);
|
|
}
|
|
break;
|
|
|
|
case T_VariableResetStmt:
|
|
{
|
|
VariableResetStmt *n = (VariableResetStmt *) parsetree;
|
|
|
|
ResetPGVariable(n->name);
|
|
}
|
|
break;
|
|
|
|
case T_CreateTrigStmt:
|
|
CreateTrigger((CreateTrigStmt *) parsetree, false);
|
|
break;
|
|
|
|
case T_DropPropertyStmt:
|
|
{
|
|
DropPropertyStmt *stmt = (DropPropertyStmt *) parsetree;
|
|
Oid relId;
|
|
|
|
relId = RangeVarGetRelid(stmt->relation, false);
|
|
|
|
switch (stmt->removeType)
|
|
{
|
|
case DROP_RULE:
|
|
/* RemoveRewriteRule checks permissions */
|
|
RemoveRewriteRule(relId, stmt->property,
|
|
stmt->behavior);
|
|
break;
|
|
case DROP_TRIGGER:
|
|
/* DropTrigger checks permissions */
|
|
DropTrigger(relId, stmt->property,
|
|
stmt->behavior);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case T_CreatePLangStmt:
|
|
CreateProceduralLanguage((CreatePLangStmt *) parsetree);
|
|
break;
|
|
|
|
case T_DropPLangStmt:
|
|
DropProceduralLanguage((DropPLangStmt *) parsetree);
|
|
break;
|
|
|
|
/*
|
|
* ******************************** DOMAIN statements ****
|
|
*/
|
|
case T_CreateDomainStmt:
|
|
DefineDomain((CreateDomainStmt *) parsetree);
|
|
break;
|
|
|
|
/*
|
|
* ******************************** USER statements ****
|
|
*/
|
|
case T_CreateUserStmt:
|
|
CreateUser((CreateUserStmt *) parsetree);
|
|
break;
|
|
|
|
case T_AlterUserStmt:
|
|
AlterUser((AlterUserStmt *) parsetree);
|
|
break;
|
|
|
|
case T_AlterUserSetStmt:
|
|
AlterUserSet((AlterUserSetStmt *) parsetree);
|
|
break;
|
|
|
|
case T_DropUserStmt:
|
|
DropUser((DropUserStmt *) parsetree);
|
|
break;
|
|
|
|
case T_LockStmt:
|
|
LockTableCommand((LockStmt *) parsetree);
|
|
break;
|
|
|
|
case T_ConstraintsSetStmt:
|
|
DeferredTriggerSetState((ConstraintsSetStmt *) parsetree);
|
|
break;
|
|
|
|
case T_CreateGroupStmt:
|
|
CreateGroup((CreateGroupStmt *) parsetree);
|
|
break;
|
|
|
|
case T_AlterGroupStmt:
|
|
AlterGroup((AlterGroupStmt *) parsetree, "ALTER GROUP");
|
|
break;
|
|
|
|
case T_DropGroupStmt:
|
|
DropGroup((DropGroupStmt *) parsetree);
|
|
break;
|
|
|
|
case T_CheckPointStmt:
|
|
if (!superuser())
|
|
elog(ERROR, "CHECKPOINT: permission denied");
|
|
CreateCheckPoint(false, false);
|
|
break;
|
|
|
|
case T_ReindexStmt:
|
|
{
|
|
ReindexStmt *stmt = (ReindexStmt *) parsetree;
|
|
|
|
switch (stmt->kind)
|
|
{
|
|
case REINDEX_INDEX:
|
|
CheckOwnership(stmt->relation, false);
|
|
ReindexIndex(stmt->relation, stmt->force);
|
|
break;
|
|
case REINDEX_TABLE:
|
|
CheckOwnership(stmt->relation, false);
|
|
ReindexTable(stmt->relation, stmt->force);
|
|
break;
|
|
case REINDEX_DATABASE:
|
|
ReindexDatabase(stmt->name, stmt->force, false);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case T_CreateConversionStmt:
|
|
CreateConversionCommand((CreateConversionStmt *) parsetree);
|
|
break;
|
|
|
|
case T_CreateCastStmt:
|
|
CreateCast((CreateCastStmt *) parsetree);
|
|
break;
|
|
|
|
case T_DropCastStmt:
|
|
DropCast((DropCastStmt *) parsetree);
|
|
break;
|
|
|
|
case T_CreateOpClassStmt:
|
|
DefineOpClass((CreateOpClassStmt *) parsetree);
|
|
break;
|
|
|
|
case T_RemoveOpClassStmt:
|
|
RemoveOpClass((RemoveOpClassStmt *) parsetree);
|
|
break;
|
|
|
|
default:
|
|
elog(ERROR, "ProcessUtility: command #%d unsupported",
|
|
nodeTag(parsetree));
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* CreateCommandTag
|
|
* utility to get a string representation of the
|
|
* command operation, given a raw (un-analyzed) parsetree.
|
|
*
|
|
* This must handle all raw command types, but since the vast majority
|
|
* of 'em are utility commands, it seems sensible to keep it here.
|
|
*
|
|
* NB: all result strings must be shorter than COMPLETION_TAG_BUFSIZE.
|
|
* Also, the result must point at a true constant (permanent storage).
|
|
*/
|
|
const char *
|
|
CreateCommandTag(Node *parsetree)
|
|
{
|
|
const char *tag;
|
|
|
|
switch (nodeTag(parsetree))
|
|
{
|
|
case T_InsertStmt:
|
|
tag = "INSERT";
|
|
break;
|
|
|
|
case T_DeleteStmt:
|
|
tag = "DELETE";
|
|
break;
|
|
|
|
case T_UpdateStmt:
|
|
tag = "UPDATE";
|
|
break;
|
|
|
|
case T_SelectStmt:
|
|
tag = "SELECT";
|
|
break;
|
|
|
|
case T_TransactionStmt:
|
|
{
|
|
TransactionStmt *stmt = (TransactionStmt *) parsetree;
|
|
|
|
switch (stmt->kind)
|
|
{
|
|
case TRANS_STMT_BEGIN:
|
|
tag = "BEGIN";
|
|
break;
|
|
|
|
case TRANS_STMT_START:
|
|
tag = "START TRANSACTION";
|
|
break;
|
|
|
|
case TRANS_STMT_COMMIT:
|
|
tag = "COMMIT";
|
|
break;
|
|
|
|
case TRANS_STMT_ROLLBACK:
|
|
tag = "ROLLBACK";
|
|
break;
|
|
|
|
default:
|
|
tag = "???";
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case T_DeclareCursorStmt:
|
|
tag = "DECLARE CURSOR";
|
|
break;
|
|
|
|
case T_ClosePortalStmt:
|
|
tag = "CLOSE CURSOR";
|
|
break;
|
|
|
|
case T_FetchStmt:
|
|
{
|
|
FetchStmt *stmt = (FetchStmt *) parsetree;
|
|
|
|
tag = (stmt->ismove) ? "MOVE" : "FETCH";
|
|
}
|
|
break;
|
|
|
|
case T_CreateDomainStmt:
|
|
tag = "CREATE DOMAIN";
|
|
break;
|
|
|
|
case T_CreateSchemaStmt:
|
|
tag = "CREATE SCHEMA";
|
|
break;
|
|
|
|
case T_CreateStmt:
|
|
tag = "CREATE TABLE";
|
|
break;
|
|
|
|
case T_DropStmt:
|
|
switch (((DropStmt *) parsetree)->removeType)
|
|
{
|
|
case DROP_TABLE:
|
|
tag = "DROP TABLE";
|
|
break;
|
|
case DROP_SEQUENCE:
|
|
tag = "DROP SEQUENCE";
|
|
break;
|
|
case DROP_VIEW:
|
|
tag = "DROP VIEW";
|
|
break;
|
|
case DROP_INDEX:
|
|
tag = "DROP INDEX";
|
|
break;
|
|
case DROP_TYPE:
|
|
tag = "DROP TYPE";
|
|
break;
|
|
case DROP_DOMAIN:
|
|
tag = "DROP DOMAIN";
|
|
break;
|
|
case DROP_CONVERSION:
|
|
tag = "DROP CONVERSION";
|
|
break;
|
|
case DROP_SCHEMA:
|
|
tag = "DROP SCHEMA";
|
|
break;
|
|
default:
|
|
tag = "???";
|
|
}
|
|
break;
|
|
|
|
case T_TruncateStmt:
|
|
tag = "TRUNCATE TABLE";
|
|
break;
|
|
|
|
case T_CommentStmt:
|
|
tag = "COMMENT";
|
|
break;
|
|
|
|
case T_CopyStmt:
|
|
tag = "COPY";
|
|
break;
|
|
|
|
case T_RenameStmt:
|
|
if (((RenameStmt *) parsetree)->renameType == RENAME_TRIGGER)
|
|
tag = "ALTER TRIGGER";
|
|
else
|
|
tag = "ALTER TABLE";
|
|
break;
|
|
|
|
case T_AlterTableStmt:
|
|
tag = "ALTER TABLE";
|
|
break;
|
|
|
|
case T_AlterDomainStmt:
|
|
tag = "ALTER DOMAIN";
|
|
break;
|
|
|
|
case T_GrantStmt:
|
|
{
|
|
GrantStmt *stmt = (GrantStmt *) parsetree;
|
|
|
|
tag = (stmt->is_grant) ? "GRANT" : "REVOKE";
|
|
}
|
|
break;
|
|
|
|
case T_DefineStmt:
|
|
switch (((DefineStmt *) parsetree)->kind)
|
|
{
|
|
case DEFINE_STMT_AGGREGATE:
|
|
tag = "CREATE AGGREGATE";
|
|
break;
|
|
case DEFINE_STMT_OPERATOR:
|
|
tag = "CREATE OPERATOR";
|
|
break;
|
|
case DEFINE_STMT_TYPE:
|
|
tag = "CREATE TYPE";
|
|
break;
|
|
default:
|
|
tag = "???";
|
|
}
|
|
break;
|
|
|
|
case T_CompositeTypeStmt:
|
|
tag = "CREATE TYPE";
|
|
break;
|
|
|
|
case T_ViewStmt:
|
|
tag = "CREATE VIEW";
|
|
break;
|
|
|
|
case T_CreateFunctionStmt:
|
|
tag = "CREATE FUNCTION";
|
|
break;
|
|
|
|
case T_IndexStmt:
|
|
tag = "CREATE INDEX";
|
|
break;
|
|
|
|
case T_RuleStmt:
|
|
tag = "CREATE RULE";
|
|
break;
|
|
|
|
case T_CreateSeqStmt:
|
|
tag = "CREATE SEQUENCE";
|
|
break;
|
|
|
|
case T_AlterSeqStmt:
|
|
tag = "ALTER SEQUENCE";
|
|
break;
|
|
|
|
case T_RemoveAggrStmt:
|
|
tag = "DROP AGGREGATE";
|
|
break;
|
|
|
|
case T_RemoveFuncStmt:
|
|
tag = "DROP FUNCTION";
|
|
break;
|
|
|
|
case T_RemoveOperStmt:
|
|
tag = "DROP OPERATOR";
|
|
break;
|
|
|
|
case T_CreatedbStmt:
|
|
tag = "CREATE DATABASE";
|
|
break;
|
|
|
|
case T_AlterDatabaseSetStmt:
|
|
tag = "ALTER DATABASE";
|
|
break;
|
|
|
|
case T_DropdbStmt:
|
|
tag = "DROP DATABASE";
|
|
break;
|
|
|
|
case T_NotifyStmt:
|
|
tag = "NOTIFY";
|
|
break;
|
|
|
|
case T_ListenStmt:
|
|
tag = "LISTEN";
|
|
break;
|
|
|
|
case T_UnlistenStmt:
|
|
tag = "UNLISTEN";
|
|
break;
|
|
|
|
case T_LoadStmt:
|
|
tag = "LOAD";
|
|
break;
|
|
|
|
case T_ClusterStmt:
|
|
tag = "CLUSTER";
|
|
break;
|
|
|
|
case T_VacuumStmt:
|
|
if (((VacuumStmt *) parsetree)->vacuum)
|
|
tag = "VACUUM";
|
|
else
|
|
tag = "ANALYZE";
|
|
break;
|
|
|
|
case T_ExplainStmt:
|
|
tag = "EXPLAIN";
|
|
break;
|
|
|
|
case T_VariableSetStmt:
|
|
tag = "SET";
|
|
break;
|
|
|
|
case T_VariableShowStmt:
|
|
tag = "SHOW";
|
|
break;
|
|
|
|
case T_VariableResetStmt:
|
|
tag = "RESET";
|
|
break;
|
|
|
|
case T_CreateTrigStmt:
|
|
tag = "CREATE TRIGGER";
|
|
break;
|
|
|
|
case T_DropPropertyStmt:
|
|
switch (((DropPropertyStmt *) parsetree)->removeType)
|
|
{
|
|
case DROP_TRIGGER:
|
|
tag = "DROP TRIGGER";
|
|
break;
|
|
case DROP_RULE:
|
|
tag = "DROP RULE";
|
|
break;
|
|
default:
|
|
tag = "???";
|
|
}
|
|
break;
|
|
|
|
case T_CreatePLangStmt:
|
|
tag = "CREATE LANGUAGE";
|
|
break;
|
|
|
|
case T_DropPLangStmt:
|
|
tag = "DROP LANGUAGE";
|
|
break;
|
|
|
|
case T_CreateUserStmt:
|
|
tag = "CREATE USER";
|
|
break;
|
|
|
|
case T_AlterUserStmt:
|
|
tag = "ALTER USER";
|
|
break;
|
|
|
|
case T_AlterUserSetStmt:
|
|
tag = "ALTER USER";
|
|
break;
|
|
|
|
case T_DropUserStmt:
|
|
tag = "DROP USER";
|
|
break;
|
|
|
|
case T_LockStmt:
|
|
tag = "LOCK TABLE";
|
|
break;
|
|
|
|
case T_ConstraintsSetStmt:
|
|
tag = "SET CONSTRAINTS";
|
|
break;
|
|
|
|
case T_CreateGroupStmt:
|
|
tag = "CREATE GROUP";
|
|
break;
|
|
|
|
case T_AlterGroupStmt:
|
|
tag = "ALTER GROUP";
|
|
break;
|
|
|
|
case T_DropGroupStmt:
|
|
tag = "DROP GROUP";
|
|
break;
|
|
|
|
case T_CheckPointStmt:
|
|
tag = "CHECKPOINT";
|
|
break;
|
|
|
|
case T_ReindexStmt:
|
|
tag = "REINDEX";
|
|
break;
|
|
|
|
case T_CreateConversionStmt:
|
|
tag = "CREATE CONVERSION";
|
|
break;
|
|
|
|
case T_CreateCastStmt:
|
|
tag = "CREATE CAST";
|
|
break;
|
|
|
|
case T_DropCastStmt:
|
|
tag = "DROP CAST";
|
|
break;
|
|
|
|
case T_CreateOpClassStmt:
|
|
tag = "CREATE OPERATOR CLASS";
|
|
break;
|
|
|
|
case T_RemoveOpClassStmt:
|
|
tag = "DROP OPERATOR CLASS";
|
|
break;
|
|
|
|
case T_PrepareStmt:
|
|
tag = "PREPARE";
|
|
break;
|
|
|
|
case T_ExecuteStmt:
|
|
tag = "EXECUTE";
|
|
break;
|
|
|
|
case T_DeallocateStmt:
|
|
tag = "DEALLOCATE";
|
|
break;
|
|
|
|
default:
|
|
elog(LOG, "CreateCommandTag: unknown parse node type %d",
|
|
nodeTag(parsetree));
|
|
tag = "???";
|
|
break;
|
|
}
|
|
|
|
return tag;
|
|
}
|