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crdb_internal.go
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// Copyright 2017 The Cockroach Authors.
//
// Use of this software is governed by the Business Source License
// included in the file licenses/BSL.txt.
//
// As of the Change Date specified in that file, in accordance with
// the Business Source License, use of this software will be governed
// by the Apache License, Version 2.0, included in the file
// licenses/APL.txt.
package sql
import (
"bytes"
"context"
"encoding/hex"
"fmt"
"net"
"net/url"
"sort"
"strconv"
"strings"
"time"
"github.com/cockroachdb/cockroach/pkg/base"
"github.com/cockroachdb/cockroach/pkg/build"
"github.com/cockroachdb/cockroach/pkg/clusterversion"
"github.com/cockroachdb/cockroach/pkg/config/zonepb"
"github.com/cockroachdb/cockroach/pkg/gossip"
"github.com/cockroachdb/cockroach/pkg/jobs"
"github.com/cockroachdb/cockroach/pkg/jobs/jobsauth"
"github.com/cockroachdb/cockroach/pkg/jobs/jobspb"
"github.com/cockroachdb/cockroach/pkg/keys"
"github.com/cockroachdb/cockroach/pkg/kv"
"github.com/cockroachdb/cockroach/pkg/kv/kvclient/kvcoord"
"github.com/cockroachdb/cockroach/pkg/kv/kvpb"
"github.com/cockroachdb/cockroach/pkg/kv/kvserver/concurrency/lock"
"github.com/cockroachdb/cockroach/pkg/kv/kvserver/liveness/livenesspb"
"github.com/cockroachdb/cockroach/pkg/multitenant/tenantcapabilities"
"github.com/cockroachdb/cockroach/pkg/multitenant/tenantcapabilities/tenantcapabilitiespb"
"github.com/cockroachdb/cockroach/pkg/roachpb"
"github.com/cockroachdb/cockroach/pkg/security/username"
"github.com/cockroachdb/cockroach/pkg/server/serverpb"
"github.com/cockroachdb/cockroach/pkg/server/status/statuspb"
"github.com/cockroachdb/cockroach/pkg/server/telemetry"
"github.com/cockroachdb/cockroach/pkg/settings"
"github.com/cockroachdb/cockroach/pkg/sql/appstatspb"
"github.com/cockroachdb/cockroach/pkg/sql/catalog"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/catalogkeys"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/catenumpb"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/catformat"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/catpb"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/catprivilege"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/colinfo"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/descpb"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/descs"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/multiregion"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/nstree"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/schemaexpr"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/systemschema"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/typedesc"
"github.com/cockroachdb/cockroach/pkg/sql/clusterunique"
"github.com/cockroachdb/cockroach/pkg/sql/contentionpb"
"github.com/cockroachdb/cockroach/pkg/sql/idxusage"
"github.com/cockroachdb/cockroach/pkg/sql/isql"
"github.com/cockroachdb/cockroach/pkg/sql/parser"
"github.com/cockroachdb/cockroach/pkg/sql/pgwire/pgcode"
"github.com/cockroachdb/cockroach/pkg/sql/pgwire/pgerror"
"github.com/cockroachdb/cockroach/pkg/sql/pgwire/pgnotice"
"github.com/cockroachdb/cockroach/pkg/sql/privilege"
"github.com/cockroachdb/cockroach/pkg/sql/protoreflect"
"github.com/cockroachdb/cockroach/pkg/sql/roleoption"
"github.com/cockroachdb/cockroach/pkg/sql/rowenc"
"github.com/cockroachdb/cockroach/pkg/sql/rowinfra"
"github.com/cockroachdb/cockroach/pkg/sql/sem/builtins"
"github.com/cockroachdb/cockroach/pkg/sql/sem/builtins/builtinsregistry"
"github.com/cockroachdb/cockroach/pkg/sql/sem/catconstants"
"github.com/cockroachdb/cockroach/pkg/sql/sem/catid"
"github.com/cockroachdb/cockroach/pkg/sql/sem/eval"
"github.com/cockroachdb/cockroach/pkg/sql/sem/tree"
"github.com/cockroachdb/cockroach/pkg/sql/sessiondata"
"github.com/cockroachdb/cockroach/pkg/sql/sqlliveness"
"github.com/cockroachdb/cockroach/pkg/sql/sqlstats"
"github.com/cockroachdb/cockroach/pkg/sql/sqlstats/persistedsqlstats"
"github.com/cockroachdb/cockroach/pkg/sql/sqlstats/persistedsqlstats/sqlstatsutil"
"github.com/cockroachdb/cockroach/pkg/sql/sqlstats/sslocal"
"github.com/cockroachdb/cockroach/pkg/sql/syntheticprivilege"
"github.com/cockroachdb/cockroach/pkg/sql/types"
"github.com/cockroachdb/cockroach/pkg/util/duration"
"github.com/cockroachdb/cockroach/pkg/util/errorutil"
"github.com/cockroachdb/cockroach/pkg/util/json"
"github.com/cockroachdb/cockroach/pkg/util/log"
"github.com/cockroachdb/cockroach/pkg/util/mon"
"github.com/cockroachdb/cockroach/pkg/util/protoutil"
"github.com/cockroachdb/cockroach/pkg/util/stop"
"github.com/cockroachdb/cockroach/pkg/util/timeutil"
"github.com/cockroachdb/cockroach/pkg/util/tracing"
"github.com/cockroachdb/cockroach/pkg/util/tracing/collector"
"github.com/cockroachdb/cockroach/pkg/util/tracing/tracingpb"
"github.com/cockroachdb/errors"
)
// CrdbInternalName is the name of the crdb_internal schema.
const CrdbInternalName = catconstants.CRDBInternalSchemaName
// Naming convention:
// - if the response is served from memory, prefix with node_
// - if the response is served via a kv request, prefix with kv_
// - if the response is not from kv requests but is cluster-wide (i.e. the
// answer isn't specific to the sql connection being used, prefix with cluster_.
//
// Adding something new here will require an update to `pkg/cli` for inclusion in
// a `debug zip`; the unit tests will guide you.
//
// Many existing tables don't follow the conventions above, but please apply
// them to future additions.
var crdbInternal = virtualSchema{
name: CrdbInternalName,
tableDefs: map[descpb.ID]virtualSchemaDef{
catconstants.CrdbInternalBackwardDependenciesTableID: crdbInternalBackwardDependenciesTable,
catconstants.CrdbInternalBuildInfoTableID: crdbInternalBuildInfoTable,
catconstants.CrdbInternalBuiltinFunctionsTableID: crdbInternalBuiltinFunctionsTable,
catconstants.CrdbInternalCatalogCommentsTableID: crdbInternalCatalogCommentsTable,
catconstants.CrdbInternalCatalogDescriptorTableID: crdbInternalCatalogDescriptorTable,
catconstants.CrdbInternalCatalogNamespaceTableID: crdbInternalCatalogNamespaceTable,
catconstants.CrdbInternalCatalogZonesTableID: crdbInternalCatalogZonesTable,
catconstants.CrdbInternalClusterContendedIndexesViewID: crdbInternalClusterContendedIndexesView,
catconstants.CrdbInternalClusterContendedKeysViewID: crdbInternalClusterContendedKeysView,
catconstants.CrdbInternalClusterContendedTablesViewID: crdbInternalClusterContendedTablesView,
catconstants.CrdbInternalClusterContentionEventsTableID: crdbInternalClusterContentionEventsTable,
catconstants.CrdbInternalClusterDistSQLFlowsTableID: crdbInternalClusterDistSQLFlowsTable,
catconstants.CrdbInternalClusterExecutionInsightsTableID: crdbInternalClusterExecutionInsightsTable,
catconstants.CrdbInternalClusterTxnExecutionInsightsTableID: crdbInternalClusterTxnExecutionInsightsTable,
catconstants.CrdbInternalClusterLocksTableID: crdbInternalClusterLocksTable,
catconstants.CrdbInternalClusterQueriesTableID: crdbInternalClusterQueriesTable,
catconstants.CrdbInternalClusterTransactionsTableID: crdbInternalClusterTxnsTable,
catconstants.CrdbInternalClusterSessionsTableID: crdbInternalClusterSessionsTable,
catconstants.CrdbInternalClusterSettingsTableID: crdbInternalClusterSettingsTable,
catconstants.CrdbInternalClusterStmtStatsTableID: crdbInternalClusterStmtStatsTable,
catconstants.CrdbInternalCreateFunctionStmtsTableID: crdbInternalCreateFunctionStmtsTable,
catconstants.CrdbInternalCreateSchemaStmtsTableID: crdbInternalCreateSchemaStmtsTable,
catconstants.CrdbInternalCreateStmtsTableID: crdbInternalCreateStmtsTable,
catconstants.CrdbInternalCreateTypeStmtsTableID: crdbInternalCreateTypeStmtsTable,
catconstants.CrdbInternalDatabasesTableID: crdbInternalDatabasesTable,
catconstants.CrdbInternalDroppedRelationsViewID: crdbInternalDroppedRelationsView,
catconstants.CrdbInternalSuperRegions: crdbInternalSuperRegions,
catconstants.CrdbInternalFeatureUsageID: crdbInternalFeatureUsage,
catconstants.CrdbInternalForwardDependenciesTableID: crdbInternalForwardDependenciesTable,
catconstants.CrdbInternalGossipNodesTableID: crdbInternalGossipNodesTable,
catconstants.CrdbInternalKVNodeLivenessTableID: crdbInternalKVNodeLivenessTable,
catconstants.CrdbInternalGossipAlertsTableID: crdbInternalGossipAlertsTable,
catconstants.CrdbInternalGossipLivenessTableID: crdbInternalGossipLivenessTable,
catconstants.CrdbInternalGossipNetworkTableID: crdbInternalGossipNetworkTable,
catconstants.CrdbInternalTransactionContentionEvents: crdbInternalTransactionContentionEventsTable,
catconstants.CrdbInternalIndexColumnsTableID: crdbInternalIndexColumnsTable,
catconstants.CrdbInternalIndexSpansTableID: crdbInternalIndexSpansTable,
catconstants.CrdbInternalIndexUsageStatisticsTableID: crdbInternalIndexUsageStatistics,
catconstants.CrdbInternalInflightTraceSpanTableID: crdbInternalInflightTraceSpanTable,
catconstants.CrdbInternalJobsTableID: crdbInternalJobsTable,
catconstants.CrdbInternalSystemJobsTableID: crdbInternalSystemJobsTable,
catconstants.CrdbInternalKVNodeStatusTableID: crdbInternalKVNodeStatusTable,
catconstants.CrdbInternalKVStoreStatusTableID: crdbInternalKVStoreStatusTable,
catconstants.CrdbInternalLeasesTableID: crdbInternalLeasesTable,
catconstants.CrdbInternalLocalContentionEventsTableID: crdbInternalLocalContentionEventsTable,
catconstants.CrdbInternalLocalDistSQLFlowsTableID: crdbInternalLocalDistSQLFlowsTable,
catconstants.CrdbInternalLocalQueriesTableID: crdbInternalLocalQueriesTable,
catconstants.CrdbInternalLocalTransactionsTableID: crdbInternalLocalTxnsTable,
catconstants.CrdbInternalLocalSessionsTableID: crdbInternalLocalSessionsTable,
catconstants.CrdbInternalLocalMetricsTableID: crdbInternalLocalMetricsTable,
catconstants.CrdbInternalNodeExecutionInsightsTableID: crdbInternalNodeExecutionInsightsTable,
catconstants.CrdbInternalNodeMemoryMonitorsTableID: crdbInternalNodeMemoryMonitors,
catconstants.CrdbInternalNodeStmtStatsTableID: crdbInternalNodeStmtStatsTable,
catconstants.CrdbInternalNodeTxnExecutionInsightsTableID: crdbInternalNodeTxnExecutionInsightsTable,
catconstants.CrdbInternalNodeTxnStatsTableID: crdbInternalNodeTxnStatsTable,
catconstants.CrdbInternalPartitionsTableID: crdbInternalPartitionsTable,
catconstants.CrdbInternalRangesNoLeasesTableID: crdbInternalRangesNoLeasesTable,
catconstants.CrdbInternalRangesViewID: crdbInternalRangesView,
catconstants.CrdbInternalRuntimeInfoTableID: crdbInternalRuntimeInfoTable,
catconstants.CrdbInternalSchemaChangesTableID: crdbInternalSchemaChangesTable,
catconstants.CrdbInternalSessionTraceTableID: crdbInternalSessionTraceTable,
catconstants.CrdbInternalSessionVariablesTableID: crdbInternalSessionVariablesTable,
catconstants.CrdbInternalStmtActivityTableID: crdbInternalStmtActivityView,
catconstants.CrdbInternalStmtStatsTableID: crdbInternalStmtStatsView,
catconstants.CrdbInternalStmtStatsPersistedTableID: crdbInternalStmtStatsPersistedView,
catconstants.CrdbInternalStmtStatsPersistedV22_2TableID: crdbInternalStmtStatsPersistedViewV22_2,
catconstants.CrdbInternalTableColumnsTableID: crdbInternalTableColumnsTable,
catconstants.CrdbInternalTableIndexesTableID: crdbInternalTableIndexesTable,
catconstants.CrdbInternalTableSpansTableID: crdbInternalTableSpansTable,
catconstants.CrdbInternalTablesTableLastStatsID: crdbInternalTablesTableLastStats,
catconstants.CrdbInternalTablesTableID: crdbInternalTablesTable,
catconstants.CrdbInternalClusterTxnStatsTableID: crdbInternalClusterTxnStatsTable,
catconstants.CrdbInternalTxnActivityTableID: crdbInternalTxnActivityView,
catconstants.CrdbInternalTxnStatsTableID: crdbInternalTxnStatsView,
catconstants.CrdbInternalTxnStatsPersistedTableID: crdbInternalTxnStatsPersistedView,
catconstants.CrdbInternalTxnStatsPersistedV22_2TableID: crdbInternalTxnStatsPersistedViewV22_2,
catconstants.CrdbInternalTransactionStatsTableID: crdbInternalTransactionStatisticsTable,
catconstants.CrdbInternalZonesTableID: crdbInternalZonesTable,
catconstants.CrdbInternalInvalidDescriptorsTableID: crdbInternalInvalidDescriptorsTable,
catconstants.CrdbInternalClusterDatabasePrivilegesTableID: crdbInternalClusterDatabasePrivilegesTable,
catconstants.CrdbInternalCrossDbRefrences: crdbInternalCrossDbReferences,
catconstants.CrdbInternalLostTableDescriptors: crdbLostTableDescriptors,
catconstants.CrdbInternalClusterInflightTracesTable: crdbInternalClusterInflightTracesTable,
catconstants.CrdbInternalRegionsTable: crdbInternalRegionsTable,
catconstants.CrdbInternalDefaultPrivilegesTable: crdbInternalDefaultPrivilegesTable,
catconstants.CrdbInternalActiveRangeFeedsTable: crdbInternalActiveRangeFeedsTable,
catconstants.CrdbInternalTenantUsageDetailsViewID: crdbInternalTenantUsageDetailsView,
catconstants.CrdbInternalPgCatalogTableIsImplementedTableID: crdbInternalPgCatalogTableIsImplementedTable,
catconstants.CrdbInternalShowTenantCapabilitiesCacheTableID: crdbInternalShowTenantCapabilitiesCache,
catconstants.CrdbInternalInheritedRoleMembersTableID: crdbInternalInheritedRoleMembers,
},
validWithNoDatabaseContext: true,
}
var crdbInternalBuildInfoTable = virtualSchemaTable{
comment: `detailed identification strings (RAM, local node only)`,
schema: `
CREATE TABLE crdb_internal.node_build_info (
node_id INT NOT NULL,
field STRING NOT NULL,
value STRING NOT NULL
)`,
populate: func(_ context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
execCfg := p.ExecCfg()
nodeID, _ := execCfg.NodeInfo.NodeID.OptionalNodeID() // zero if not available
info := build.GetInfo()
for k, v := range map[string]string{
"Name": "CockroachDB",
"ClusterID": execCfg.NodeInfo.LogicalClusterID().String(),
"Organization": execCfg.Organization(),
"Build": info.Short(),
"Version": info.Tag,
"Channel": info.Channel,
} {
if err := addRow(
tree.NewDInt(tree.DInt(nodeID)),
tree.NewDString(k),
tree.NewDString(v),
); err != nil {
return err
}
}
return nil
},
}
var crdbInternalRuntimeInfoTable = virtualSchemaTable{
comment: `server parameters, useful to construct connection URLs (RAM, local node only)`,
schema: `
CREATE TABLE crdb_internal.node_runtime_info (
node_id INT NOT NULL,
component STRING NOT NULL,
field STRING NOT NULL,
value STRING NOT NULL
)`,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
if err := p.RequireAdminRole(ctx, "access the node runtime information"); err != nil {
return err
}
node := p.ExecCfg().NodeInfo
nodeID, _ := node.NodeID.OptionalNodeID() // zero if not available
dbURL, err := node.PGURL(url.User(username.RootUser))
if err != nil {
return err
}
for _, item := range []struct {
component string
url *url.URL
}{
{"DB", dbURL.ToPQ()}, {"UI", node.AdminURL()},
} {
var user string
if item.url.User != nil {
user = item.url.User.String()
}
host, port, err := net.SplitHostPort(item.url.Host)
if err != nil {
return err
}
for _, kv := range [][2]string{
{"URL", item.url.String()},
{"Scheme", item.url.Scheme},
{"User", user},
{"Host", host},
{"Port", port},
{"URI", item.url.RequestURI()},
} {
k, v := kv[0], kv[1]
if err := addRow(
tree.NewDInt(tree.DInt(nodeID)),
tree.NewDString(item.component),
tree.NewDString(k),
tree.NewDString(v),
); err != nil {
return err
}
}
}
return nil
},
}
var crdbInternalDatabasesTable = virtualSchemaTable{
comment: `databases accessible by the current user (KV scan)`,
schema: `
CREATE TABLE crdb_internal.databases (
id INT NOT NULL,
name STRING NOT NULL,
owner NAME NOT NULL,
primary_region STRING,
secondary_region STRING,
regions STRING[],
survival_goal STRING,
placement_policy STRING,
create_statement STRING NOT NULL
)`,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
return forEachDatabaseDesc(ctx, p, nil /* all databases */, true, /* requiresPrivileges */
func(db catalog.DatabaseDescriptor) error {
var survivalGoal = tree.DNull
var primaryRegion = tree.DNull
var secondaryRegion = tree.DNull
var placement = tree.DNull
regions := tree.NewDArray(types.String)
createNode := tree.CreateDatabase{}
createNode.ConnectionLimit = -1
createNode.Name = tree.Name(db.GetName())
if db.IsMultiRegion() {
primaryRegion = tree.NewDString(string(db.GetRegionConfig().PrimaryRegion))
createNode.PrimaryRegion = tree.Name(db.GetRegionConfig().PrimaryRegion)
secondaryRegion = tree.NewDString(string(db.GetRegionConfig().SecondaryRegion))
createNode.SecondaryRegion = tree.Name(db.GetRegionConfig().SecondaryRegion)
regionConfig, err := SynthesizeRegionConfig(ctx, p.txn, db.GetID(), p.Descriptors())
if err != nil {
return err
}
createNode.Regions = make(tree.NameList, len(regionConfig.Regions()))
for i, region := range regionConfig.Regions() {
if err := regions.Append(tree.NewDString(string(region))); err != nil {
return err
}
createNode.Regions[i] = tree.Name(region)
}
if db.GetRegionConfig().Placement == descpb.DataPlacement_RESTRICTED {
placement = tree.NewDString("restricted")
createNode.Placement = tree.DataPlacementRestricted
} else {
placement = tree.NewDString("default")
// We can't differentiate between a database that was created with
// unspecified and default, and we don't want to expose PLACEMENT
// unless we know the user wants to use PLACEMENT. Therefore, we
// only add a PLACEMENT clause if the database was configured with
// restricted placement.
createNode.Placement = tree.DataPlacementUnspecified
}
createNode.SurvivalGoal = tree.SurvivalGoalDefault
switch db.GetRegionConfig().SurvivalGoal {
case descpb.SurvivalGoal_ZONE_FAILURE:
survivalGoal = tree.NewDString("zone")
createNode.SurvivalGoal = tree.SurvivalGoalZoneFailure
case descpb.SurvivalGoal_REGION_FAILURE:
survivalGoal = tree.NewDString("region")
createNode.SurvivalGoal = tree.SurvivalGoalRegionFailure
default:
return errors.Newf("unknown survival goal: %d", db.GetRegionConfig().SurvivalGoal)
}
}
owner, err := p.getOwnerOfPrivilegeObject(ctx, db)
if err != nil {
return err
}
return addRow(
tree.NewDInt(tree.DInt(db.GetID())), // id
tree.NewDString(db.GetName()), // name
tree.NewDName(owner.Normalized()), // owner
primaryRegion, // primary_region
secondaryRegion, // secondary_region
regions, // regions
survivalGoal, // survival_goal
placement, // data_placement
tree.NewDString(createNode.String()), // create_statement
)
})
},
}
var crdbInternalSuperRegions = virtualSchemaTable{
comment: `list super regions of databases visible to the current user`,
schema: `
CREATE TABLE crdb_internal.super_regions (
id INT NOT NULL,
database_name STRING NOT NULL,
super_region_name STRING NOT NULL,
regions STRING[]
)`,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
return forEachDatabaseDesc(ctx, p, nil /* all databases */, true, /* requiresPrivileges */
func(db catalog.DatabaseDescriptor) error {
if !db.IsMultiRegion() {
return nil
}
typeID, err := db.MultiRegionEnumID()
if err != nil {
return err
}
typeDesc, err := p.Descriptors().ByIDWithLeased(p.txn).WithoutNonPublic().Get().Type(ctx, typeID)
if err != nil {
return err
}
regionDesc := typeDesc.AsRegionEnumTypeDescriptor()
if regionDesc == nil {
return errors.AssertionFailedf("expected region enum type, not %s for type %q (%d)",
typeDesc.GetKind(), typeDesc.GetName(), typeDesc.GetID())
}
return regionDesc.ForEachSuperRegion(func(superRegion string) error {
regionList := tree.NewDArray(types.String)
if err := regionDesc.ForEachRegionInSuperRegion(superRegion, func(region catpb.RegionName) error {
return regionList.Append(tree.NewDString(region.String()))
}); err != nil {
return err
}
return addRow(
tree.NewDInt(tree.DInt(db.GetID())), // id
tree.NewDString(db.GetName()), // database_name
tree.NewDString(superRegion), // super_region_name
regionList, // regions
)
})
})
},
}
func makeCrdbInternalTablesAddRowFn(
p *planner, pusher func(...tree.Datum) error,
) func(table catalog.TableDescriptor, dbName tree.Datum, scName string) error {
row := make(tree.Datums, 14)
return func(table catalog.TableDescriptor, dbName tree.Datum, scName string) (err error) {
dropTimeDatum := tree.DNull
if dropTime := table.GetDropTime(); dropTime != 0 {
dropTimeDatum, err = tree.MakeDTimestamp(
timeutil.Unix(0, dropTime), time.Nanosecond,
)
if err != nil {
return err
}
}
locality := tree.DNull
if c := table.GetLocalityConfig(); c != nil {
f := p.EvalContext().FmtCtx(tree.FmtSimple)
if err := multiregion.FormatTableLocalityConfig(c, f); err != nil {
return err
}
locality = tree.NewDString(f.String())
}
row = row[:0]
row = append(row,
tree.NewDInt(tree.DInt(int64(table.GetID()))),
tree.NewDInt(tree.DInt(int64(table.GetParentID()))),
tree.NewDString(table.GetName()),
dbName,
tree.NewDInt(tree.DInt(int64(table.GetVersion()))),
eval.TimestampToInexactDTimestamp(table.GetModificationTime()),
eval.TimestampToDecimalDatum(table.GetModificationTime()),
tree.NewDString(table.GetFormatVersion().String()),
tree.NewDString(table.GetState().String()),
tree.DNull, // sc_lease_node_id is deprecated
tree.DNull, // sc_lease_expiration_time is deprecated
dropTimeDatum,
tree.NewDString(table.GetAuditMode().String()),
tree.NewDString(scName),
tree.NewDInt(tree.DInt(int64(table.GetParentSchemaID()))),
locality,
)
return pusher(row...)
}
}
// TODO(tbg): prefix with kv_.
var crdbInternalTablesTable = virtualSchemaTable{
comment: `table descriptors accessible by current user, including non-public and virtual (KV scan; expensive!)`,
schema: `
CREATE TABLE crdb_internal.tables (
table_id INT8 NOT NULL,
parent_id INT8 NOT NULL,
name STRING NOT NULL,
database_name STRING,
version INT8 NOT NULL,
mod_time TIMESTAMP NOT NULL,
mod_time_logical DECIMAL NOT NULL,
format_version STRING NOT NULL,
state STRING NOT NULL,
sc_lease_node_id INT8,
sc_lease_expiration_time TIMESTAMP,
drop_time TIMESTAMP,
audit_mode STRING NOT NULL,
schema_name STRING NOT NULL,
parent_schema_id INT8 NOT NULL,
locality STRING,
INDEX (parent_id) WHERE drop_time IS NULL,
INDEX (database_name) WHERE drop_time IS NULL
);`,
indexes: []virtualIndex{
{
// INDEX(parent_id) WHERE drop_time IS NULL
populate: func(ctx context.Context, unwrappedConstraint tree.Datum, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) (matched bool, err error) {
dbID := descpb.ID(tree.MustBeDInt(unwrappedConstraint))
db, err := p.byIDGetterBuilder().WithoutDropped().Get().Database(ctx, dbID)
if err != nil {
return false, err
}
return crdbInternalTablesDatabaseLookupFunc(ctx, p, db, addRow)
},
},
{
// INDEX(database_name) WHERE drop_time IS NULL
populate: func(ctx context.Context, unwrappedConstraint tree.Datum, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) (matched bool, err error) {
dbName := string(tree.MustBeDString(unwrappedConstraint))
db, err := p.byNameGetterBuilder().WithOffline().MaybeGet().Database(ctx, dbName)
if db == nil || err != nil {
return false, err
}
return crdbInternalTablesDatabaseLookupFunc(ctx, p, db, addRow)
},
},
},
populate: func(ctx context.Context, p *planner, db catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
all, err := p.Descriptors().GetAllDescriptors(ctx, p.txn)
if err != nil {
return err
}
descs := all.OrderedDescriptors()
dbNames := make(map[descpb.ID]string)
scNames := make(map[descpb.ID]string)
// TODO(richardjcai): Remove this case for keys.PublicSchemaID in 22.2.
scNames[keys.PublicSchemaID] = catconstants.PublicSchemaName
// Record database descriptors for name lookups.
for _, desc := range descs {
if dbDesc, ok := desc.(catalog.DatabaseDescriptor); ok {
dbNames[dbDesc.GetID()] = dbDesc.GetName()
}
if scDesc, ok := desc.(catalog.SchemaDescriptor); ok {
scNames[scDesc.GetID()] = scDesc.GetName()
}
}
addDesc := makeCrdbInternalTablesAddRowFn(p, addRow)
// Note: we do not use forEachTableDesc() here because we want to
// include added and dropped descriptors.
for _, desc := range descs {
table, isTable := desc.(catalog.TableDescriptor)
if !isTable {
continue
}
if ok, err := p.HasAnyPrivilege(ctx, table); err != nil {
return err
} else if !ok {
continue
}
dbName := dbNames[table.GetParentID()]
if dbName == "" {
// The parent database was deleted. This is possible e.g. when
// a database is dropped with CASCADE, and someone queries
// this virtual table before the dropped table descriptors are
// effectively deleted.
dbName = fmt.Sprintf("[%d]", table.GetParentID())
}
schemaName := scNames[table.GetParentSchemaID()]
if schemaName == "" {
// The parent schema was deleted, possibly due to reasons mentioned above.
schemaName = fmt.Sprintf("[%d]", table.GetParentSchemaID())
}
if err := addDesc(table, tree.NewDString(dbName), schemaName); err != nil {
return err
}
}
// Also add all the virtual descriptors.
vt := p.getVirtualTabler()
vSchemas := vt.getSchemas()
for _, virtSchemaName := range vt.getSchemaNames() {
e := vSchemas[virtSchemaName]
for _, tName := range e.orderedDefNames {
vTableEntry := e.defs[tName]
if err := addDesc(vTableEntry.desc, tree.DNull, virtSchemaName); err != nil {
return err
}
}
}
return nil
},
}
func crdbInternalTablesDatabaseLookupFunc(
ctx context.Context, p *planner, db catalog.DatabaseDescriptor, addRow func(...tree.Datum) error,
) (bool, error) {
var descs nstree.Catalog
var err error
if useIndexLookupForDescriptorsInDatabase.Get(&p.EvalContext().Settings.SV) {
descs, err = p.Descriptors().GetAllDescriptorsForDatabase(ctx, p.Txn(), db)
} else {
descs, err = p.Descriptors().GetAllDescriptors(ctx, p.Txn())
}
if err != nil {
return false, err
}
scNames := make(map[descpb.ID]string)
// TODO(richardjcai): Remove this case for keys.PublicSchemaID in 22.2.
scNames[keys.PublicSchemaID] = catconstants.PublicSchemaName
// Record database descriptors for name lookups.
dbID := db.GetID()
_ = descs.ForEachDescriptor(func(desc catalog.Descriptor) error {
if desc.GetParentID() != dbID {
return nil
}
if scDesc, ok := desc.(catalog.SchemaDescriptor); ok {
scNames[scDesc.GetID()] = scDesc.GetName()
}
return nil
})
rf := makeCrdbInternalTablesAddRowFn(p, addRow)
var seenAny bool
if err := descs.ForEachDescriptor(func(desc catalog.Descriptor) error {
if desc.GetParentID() != dbID {
return nil
}
table, isTable := desc.(catalog.TableDescriptor)
if !isTable {
return nil
}
if ok, err := p.HasAnyPrivilege(ctx, table); err != nil {
return err
} else if !ok {
return nil
}
seenAny = true
schemaName := scNames[table.GetParentSchemaID()]
if schemaName == "" {
// The parent schema was deleted, possibly due to reasons mentioned above.
schemaName = fmt.Sprintf("[%d]", table.GetParentSchemaID())
}
return rf(table, tree.NewDString(db.GetName()), schemaName)
}); err != nil {
return false, err
}
return seenAny, nil
}
var crdbInternalPgCatalogTableIsImplementedTable = virtualSchemaTable{
comment: `which entries of pg_catalog are implemented in this version of CockroachDB`,
schema: `
CREATE TABLE crdb_internal.pg_catalog_table_is_implemented (
name STRING NOT NULL,
implemented BOOL
)`,
generator: func(ctx context.Context, p *planner, dbDesc catalog.DatabaseDescriptor, stopper *stop.Stopper) (virtualTableGenerator, cleanupFunc, error) {
row := make(tree.Datums, 14)
worker := func(ctx context.Context, pusher rowPusher) error {
addDesc := func(table *virtualDefEntry, dbName tree.Datum, scName string) error {
tableDesc := table.desc
row = row[:0]
row = append(row,
tree.NewDString(tableDesc.GetName()),
tree.MakeDBool(tree.DBool(table.unimplemented)),
)
return pusher.pushRow(row...)
}
vt := p.getVirtualTabler()
vSchemas := vt.getSchemas()
e := vSchemas["pg_catalog"]
for _, tName := range e.orderedDefNames {
vTableEntry := e.defs[tName]
if err := addDesc(vTableEntry, tree.DNull, "pg_catalog"); err != nil {
return err
}
}
return nil
}
return setupGenerator(ctx, worker, stopper)
},
}
// statsAsOfTimeClusterMode controls the cluster setting for the duration which
// is used to define the AS OF time for querying the system.table_statistics
// table when building crdb_internal.table_row_statistics.
var statsAsOfTimeClusterMode = settings.RegisterDurationSetting(
settings.TenantWritable,
"sql.crdb_internal.table_row_statistics.as_of_time",
"historical query time used to build the crdb_internal.table_row_statistics table",
-10*time.Second,
)
var crdbInternalTablesTableLastStats = virtualSchemaTable{
comment: "stats for all tables accessible by current user in current database as of 10s ago",
schema: `
CREATE TABLE crdb_internal.table_row_statistics (
table_id INT NOT NULL,
table_name STRING NOT NULL,
estimated_row_count INT
)`,
populate: func(ctx context.Context, p *planner, db catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
// Collect the statistics for all tables AS OF 10 seconds ago to avoid
// contention on the stats table. We pass a nil transaction so that the AS
// OF clause can be independent of any outer query.
query := fmt.Sprintf(`
SELECT s."tableID", max(s."rowCount")
FROM system.table_statistics AS s
JOIN (
SELECT "tableID", max("createdAt") AS last_dt
FROM system.table_statistics
GROUP BY "tableID"
) AS l ON l."tableID" = s."tableID" AND l.last_dt = s."createdAt"
AS OF SYSTEM TIME '%s'
GROUP BY s."tableID"`, statsAsOfTimeClusterMode.String(&p.ExecCfg().Settings.SV))
statRows, err := p.ExtendedEvalContext().ExecCfg.InternalDB.Executor().QueryBufferedEx(
ctx, "crdb-internal-statistics-table", nil,
sessiondata.RootUserSessionDataOverride,
query)
if err != nil {
// This query is likely to cause errors due to SHOW TABLES being run less
// than 10 seconds after cluster startup (10s is the default AS OF time
// for the query), causing the error "descriptor not found". We should
// tolerate this error and return nil.
if errors.Is(err, catalog.ErrDescriptorNotFound) {
return nil
}
return err
}
// Convert statistics into map: tableID -> rowCount.
statMap := make(map[tree.DInt]tree.Datum, len(statRows))
for _, r := range statRows {
statMap[tree.MustBeDInt(r[0])] = r[1]
}
// Walk over all available tables and show row count for each of them
// using collected statistics.
return forEachTableDescAll(ctx, p, db, virtualMany,
func(db catalog.DatabaseDescriptor, _ catalog.SchemaDescriptor, table catalog.TableDescriptor) error {
tableID := tree.DInt(table.GetID())
rowCount := tree.DNull
// For Virtual Tables report NULL row count.
if !table.IsVirtualTable() {
rowCount = tree.NewDInt(0)
if cnt, ok := statMap[tableID]; ok {
rowCount = cnt
}
}
return addRow(
tree.NewDInt(tableID),
tree.NewDString(table.GetName()),
rowCount,
)
},
)
},
}
// TODO(tbg): prefix with kv_.
var crdbInternalSchemaChangesTable = virtualSchemaTable{
comment: `ongoing schema changes, across all descriptors accessible by current user (KV scan; expensive!)`,
schema: `
CREATE TABLE crdb_internal.schema_changes (
table_id INT NOT NULL,
parent_id INT NOT NULL,
name STRING NOT NULL,
type STRING NOT NULL,
target_id INT,
target_name STRING,
state STRING NOT NULL,
direction STRING NOT NULL
)`,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
all, err := p.Descriptors().GetAllDescriptors(ctx, p.txn)
if err != nil {
return err
}
descs := all.OrderedDescriptors()
// Note: we do not use forEachTableDesc() here because we want to
// include added and dropped descriptors.
for _, desc := range descs {
table, isTable := desc.(catalog.TableDescriptor)
if !isTable {
continue
}
if ok, err := p.HasAnyPrivilege(ctx, table); err != nil {
return err
} else if !ok {
continue
}
tableID := tree.NewDInt(tree.DInt(int64(table.GetID())))
parentID := tree.NewDInt(tree.DInt(int64(table.GetParentID())))
tableName := tree.NewDString(table.GetName())
for _, mut := range table.TableDesc().Mutations {
mutType := "UNKNOWN"
targetID := tree.DNull
targetName := tree.DNull
switch d := mut.Descriptor_.(type) {
case *descpb.DescriptorMutation_Column:
mutType = "COLUMN"
targetID = tree.NewDInt(tree.DInt(int64(d.Column.ID)))
targetName = tree.NewDString(d.Column.Name)
case *descpb.DescriptorMutation_Index:
mutType = "INDEX"
targetID = tree.NewDInt(tree.DInt(int64(d.Index.ID)))
targetName = tree.NewDString(d.Index.Name)
case *descpb.DescriptorMutation_Constraint:
mutType = "CONSTRAINT VALIDATION"
targetName = tree.NewDString(d.Constraint.Name)
}
if err := addRow(
tableID,
parentID,
tableName,
tree.NewDString(mutType),
targetID,
targetName,
tree.NewDString(mut.State.String()),
tree.NewDString(mut.Direction.String()),
); err != nil {
return err
}
}
}
return nil
},
}
// TODO(tbg): prefix with node_.
var crdbInternalLeasesTable = virtualSchemaTable{
comment: `acquired table leases (RAM; local node only)`,
schema: `
CREATE TABLE crdb_internal.leases (
node_id INT NOT NULL,
table_id INT NOT NULL,
name STRING NOT NULL,
parent_id INT NOT NULL,
expiration TIMESTAMP NOT NULL,
deleted BOOL NOT NULL
)`,
populate: func(
ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error,
) error {
nodeID, _ := p.execCfg.NodeInfo.NodeID.OptionalNodeID() // zero if not available
var iterErr error
p.LeaseMgr().VisitLeases(func(desc catalog.Descriptor, takenOffline bool, _ int, expiration tree.DTimestamp) (wantMore bool) {
if ok, err := p.HasAnyPrivilege(ctx, desc); err != nil {
iterErr = err
return false
} else if !ok {
return true
}
if err := addRow(
tree.NewDInt(tree.DInt(nodeID)),
tree.NewDInt(tree.DInt(int64(desc.GetID()))),
tree.NewDString(desc.GetName()),
tree.NewDInt(tree.DInt(int64(desc.GetParentID()))),
&expiration,
tree.MakeDBool(tree.DBool(takenOffline)),
); err != nil {
iterErr = err
return false
}
return true
})
return iterErr
},
}
func tsOrNull(micros int64) (tree.Datum, error) {
if micros == 0 {
return tree.DNull, nil
}
ts := timeutil.Unix(0, micros*time.Microsecond.Nanoseconds())
return tree.MakeDTimestamp(ts, time.Microsecond)
}
const (
// SystemJobsAndJobInfoBaseQuery consults both the `system.jobs` and
// `system.job_info` tables to return relevant information about a job.
//
// NB: Every job on creation writes a row each for its payload and progress to
// the `system.job_info` table. For a given job there will always be at most
// one row each for its payload and progress. This is because of the
// `system.job_info` write semantics described `InfoStorage.Write`.
// Theoretically, a job could have no rows corresponding to its progress and
// so we perform a LEFT JOIN to get a NULL value when no progress row is
// found.
SystemJobsAndJobInfoBaseQuery = `
WITH
latestpayload AS (SELECT job_id, value FROM system.job_info AS payload WHERE info_key = 'legacy_payload' ORDER BY written DESC),
latestprogress AS (SELECT job_id, value FROM system.job_info AS progress WHERE info_key = 'legacy_progress' ORDER BY written DESC)
SELECT
DISTINCT(id), status, created, payload.value AS payload, progress.value AS progress,
created_by_type, created_by_id, claim_session_id, claim_instance_id, num_runs, last_run, job_type
FROM system.jobs AS j
INNER JOIN latestpayload AS payload ON j.id = payload.job_id
LEFT JOIN latestprogress AS progress ON j.id = progress.job_id
`
// systemJobsAndJobInfoBaseQueryWithIDPredicate is the same as
// systemJobsAndJobInfoBaseQuery but with a predicate on `job_id` in the CTE
// queries.
systemJobsAndJobInfoBaseQueryWithIDPredicate = `
WITH
latestpayload AS (SELECT job_id, value FROM system.job_info AS payload WHERE info_key = 'legacy_payload' AND job_id = $1 ORDER BY written DESC LIMIT 1),
latestprogress AS (SELECT job_id, value FROM system.job_info AS progress WHERE info_key = 'legacy_progress' AND job_id = $1 ORDER BY written DESC LIMIT 1)
SELECT
id, status, created, payload.value AS payload, progress.value AS progress,
created_by_type, created_by_id, claim_session_id, claim_instance_id, num_runs, last_run, job_type
FROM system.jobs AS j
INNER JOIN latestpayload AS payload ON j.id = payload.job_id
LEFT JOIN latestprogress AS progress ON j.id = progress.job_id
`
// Before clusterversion.V23_1JobInfoTableIsBackfilled, the system.job_info
// table has not been fully populated with the payload and progress of jobs in
// the cluster.
systemJobsBaseQuery = `
SELECT
id, status, created, payload, progress, created_by_type, created_by_id,
claim_session_id, claim_instance_id, num_runs, last_run, job_type
FROM system.jobs`
// TODO(jayant): remove the version gate in 24.1
// Before clusterversion.V23_1BackfillTypeColumnInJobsTable, the system.jobs table did not have
// a fully populated job_type column, so we must project it manually
// with crdb_internal.job_payload_type.
oldSystemJobsBaseQuery = `
SELECT id, status, created, payload, progress, created_by_type, created_by_id,
claim_session_id, claim_instance_id, num_runs, last_run,
crdb_internal.job_payload_type(payload) as job_type
FROM system.jobs`
systemJobsIDPredicate = ` WHERE id = $1`
systemJobsTypePredicate = ` WHERE job_type = $1`
systemJobsStatusPredicate = ` WHERE status = $1`
)
type systemJobsPredicate int
const (
noPredicate systemJobsPredicate = iota
jobID
jobType
jobStatus
)
func getInternalSystemJobsQueryFromClusterVersion(
ctx context.Context, version clusterversion.Handle, predicate systemJobsPredicate,
) string {
var baseQuery string
if version.IsActive(ctx, clusterversion.V23_1JobInfoTableIsBackfilled) {
baseQuery = SystemJobsAndJobInfoBaseQuery
if predicate == jobID {
baseQuery = systemJobsAndJobInfoBaseQueryWithIDPredicate
}
} else if version.IsActive(ctx, clusterversion.V23_1BackfillTypeColumnInJobsTable) {
baseQuery = systemJobsBaseQuery
} else {
baseQuery = oldSystemJobsBaseQuery
}
switch predicate {
case noPredicate:
return baseQuery
case jobID:
return baseQuery + systemJobsIDPredicate
case jobType:
return baseQuery + systemJobsTypePredicate
case jobStatus:
return baseQuery + systemJobsStatusPredicate
}
return ""
}
// TODO(tbg): prefix with kv_.
var crdbInternalSystemJobsTable = virtualSchemaTable{
schema: `
CREATE TABLE crdb_internal.system_jobs (
id INT8 NOT NULL,
status STRING NOT NULL,
created TIMESTAMP NOT NULL,
payload BYTES NOT NULL,
progress BYTES,
created_by_type STRING,
created_by_id INT,