Class Reference
IRIS for UNIX 2019.2
InterSystems: The power behind what matters   
Documentation  Search
  [%SYS] >  [INFORMATION] >  [SCHEMA] >  [STATEMENTS]
Private  Storage   

persistent class INFORMATION.SCHEMA.STATEMENTS extends %Library.Persistent, %XML.Adaptor

SQL Table Name: STATEMENTS

Contains SQL Statement Index entries that can be accessed by the current user in the current namespace.

Inventory

Parameters Properties Methods Queries Indices ForeignKeys Triggers
1 29


Summary

Properties
Children Days DefaultSchema Error
Frozen FrozenDifferent Hash Locations
NaturalQuery Packages ParentHash Plan
PrivilegeRelations Relations SQLSchemaPath SqlComp
StatAverage StatCount StatFirst StatStdDev
StatTotal StatVariance Statement Switch
Timestamp Version

Methods
%AddToSaveSet %AddToSyncSet %CheckConstraints %CheckConstraintsForExtent
%ClassIsLatestVersion %ClassName %ComposeOid %ConstructClone
%Delete %DeleteExtent %DeleteId %DispatchClassMethod
%DispatchGetModified %DispatchGetProperty %DispatchMethod %DispatchSetModified
%DispatchSetMultidimProperty %DispatchSetProperty %Exists %ExistsId
%Extends %GUID %GUIDSet %GetLock
%GetParameter %GetSwizzleObject %Id %IsA
%IsModified %IsNull %KillExtent %LockExtent
%LockId %New %NormalizeObject %ObjectIsNull
%ObjectModified %Oid %OnBeforeAddToSync %OnDetermineClass
%Open %OpenId %OriginalNamespace %PackageName
%PurgeIndices %Reload %RemoveFromSaveSet %ResolveConcurrencyConflict
%RollBack %Save %SaveDirect %SerializeObject
%SetModified %SortBegin %SortEnd %SyncObjectIn
%SyncTransport %UnlockExtent %UnlockId %ValidateIndices
%ValidateObject XMLDTD XMLExport XMLExportToStream
XMLExportToString XMLNew XMLSchema XMLSchemaNamespace
XMLSchemaType


Parameters

• parameter READONLY = 1;
READONLY = 1 means that objects can be created, opened but not saved or deleted. Tables are projected to SQL as READONLY.

Properties

• relationship Children as INFORMATION.SCHEMA.STATEMENTCHILDREN [ Inverse = Statement,Cardinality = children ];
• relationship Days as INFORMATION.SCHEMA.STATEMENTDAILYSTATS(XMLPROJECTION="NONE") [ Inverse = Statement,Cardinality = children ];
Breakdown of light weight SQL stats per day
• property DefaultSchema as %Library.List;
Value of %defschema when the statement was compiled
• property Error as %String(MAXLEN=4096);
Error string recorded for this plan
• property Frozen as %Integer;
0/1/2/3 flag which defines if the statement plan Unfrozen (0), Frozen/Explicit (1), Frozen/Upgrade (2), or Unfrozen/Parallel (3)
• property FrozenDifferent as %Boolean;
True if the frozen plan is different to what we would use if the plan was not frozen
• property Hash as %String(MAXLEN=32) [ Required ];
Internal unique statement hash used as the ID for the statement.
• relationship Locations as INFORMATION.SCHEMA.STATEMENTLOCATIONS(XMLPROJECTION="NONE") [ Inverse = Statement,Cardinality = children ];
• property NaturalQuery as %Boolean;
Set to true for 'natural' queries which are already maximally efficient and for which we do not collect any statistics as the overhead of statistical collection would have a significant impact on the statement performance.
• property Packages as %Library.List;
Value of packages argument passed to SQL compiler when the statement was compiled
• property ParentHash as %String(MAXLEN=32) [ Required ];
Hash of this statement's parent statement. Only defined if this is a recursive compile for %PARALLEL statements. This references the root parent's hash.
• property Plan as list of %Binary(MAXLEN=65536);
Query plan
• relationship PrivilegeRelations as INFORMATION.SCHEMA.STATEMENTPRIVOBJECTS [ Inverse = Statements,Cardinality = children ];
• relationship Relations as INFORMATION.SCHEMA.STATEMENTRELATIONS [ Inverse = Statement,Cardinality = children ];
• property SQLSchemaPath as %Library.List;
Value of %sqlSchemaPath when the statement was compiled
• property SqlComp as %String(MAXLEN=32);
SQL Compilation mode, Logical, Odbc, Display, Runtime, etc., when the statement was compiled
• property StatAverage as %Double [ Calculated ];
Average time spent running this query
• property StatCount as %Integer;
Total number of times we have recorded this query being run
• property StatFirst as %Date;
First day we recorded statistics from running this query
• property StatStdDev as %Double [ Calculated ];
Standard deviation of the time measurement for this query
• property StatTotal as %Double;
Total time spent running this query
• property StatVariance as %Double;
Variance in time from running this query
• property Statement as %String(COLLATION="SQLSTRING(150)",MAXLEN=262144);
• property Switch as %String(MAXLEN=32);
Value of %switch when the statement was compiled
• property Timestamp as %TimeStamp;
Timestamp value for when the plan was saved.
• property Version as %String(MAXLEN=200);
$zversion string for when the plan was saved.


Copyright (c) 2019 by InterSystems Corporation. Cambridge, Massachusetts, U.S.A. All rights reserved. Confidential property of InterSystems Corporation.