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pg_catalog.go
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// Copyright 2016 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/binary"
"fmt"
"hash"
"hash/fnv"
"strings"
"time"
"unicode"
"github.com/cockroachdb/cockroach/pkg/keys"
"github.com/cockroachdb/cockroach/pkg/security/username"
"github.com/cockroachdb/cockroach/pkg/sql/catalog"
"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/descpb"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/schemaexpr"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/tabledesc"
"github.com/cockroachdb/cockroach/pkg/sql/catalog/typedesc"
"github.com/cockroachdb/cockroach/pkg/sql/pgwire/pgcode"
"github.com/cockroachdb/cockroach/pkg/sql/pgwire/pgerror"
"github.com/cockroachdb/cockroach/pkg/sql/privilege"
"github.com/cockroachdb/cockroach/pkg/sql/sem/builtins"
"github.com/cockroachdb/cockroach/pkg/sql/sem/builtins/builtinsregistry"
"github.com/cockroachdb/cockroach/pkg/sql/sem/cast"
"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/sem/tree/treecmp"
"github.com/cockroachdb/cockroach/pkg/sql/sem/volatility"
"github.com/cockroachdb/cockroach/pkg/sql/sessiondata"
"github.com/cockroachdb/cockroach/pkg/sql/sqlerrors"
"github.com/cockroachdb/cockroach/pkg/sql/types"
"github.com/cockroachdb/cockroach/pkg/sql/vtable"
"github.com/cockroachdb/cockroach/pkg/util/log"
"github.com/cockroachdb/errors"
"github.com/lib/pq/oid"
"golang.org/x/text/collate"
)
var (
oidZero = tree.NewDOid(0)
zeroVal = tree.DZero
negOneVal = tree.NewDInt(-1)
passwdStarString = tree.NewDString("********")
)
const (
indexTypeForwardIndex = "prefix"
indexTypeInvertedIndex = "inverted"
)
// Bitmasks for pg_index.indoption. Each column in the index has a bitfield
// indicating how the columns are indexed. The constants below are the same as
// the ones in Postgres:
// https://github.com/postgres/postgres/blob/b6423e92abfadaa1ed9642319872aa1654403cd6/src/include/catalog/pg_index.h#L70-L76
const (
// indoptionDesc indicates that the values in the index are in reverse order.
indoptionDesc = 0x01
// indoptionNullsFirst indicates that NULLs appear first in the index.
indoptionNullsFirst = 0x02
)
// RewriteEvTypes could be a enumeration if rewrite rules gets implemented
type RewriteEvTypes string
const evTypeSelect RewriteEvTypes = "1"
// PGShDependType is an enumeration that lists pg_shdepend deptype column values
type PGShDependType string
const (
// sharedDependencyOwner is a deptype used to reference an object with the
// owner of the dependent object.
sharedDependencyOwner PGShDependType = "o"
// sharedDependencyACL in postgres The referenced object is mentioned in the
// ACL (access control list, i.e., privileges list) of the dependent object.
// (A SHARED_DEPENDENCY_ACL entry is not made for the owner of the object,
// since the owner will have a SHARED_DEPENDENCY_OWNER entry anyway.)
// For cockroachDB deptype is sharedDependencyACL if the role is not the
// owner neither a pinned role.
sharedDependencyACL PGShDependType = "a"
// sharedDependencyPin in postgres for this deptype there is no dependent
// object; this type of entry is a signal that the system itself depends on
// the referenced object, and so that object must never be deleted. Entries
// of this type are created only by initdb.
// In cockroachDB the similar roles are root and admin.
sharedDependencyPin PGShDependType = "p"
)
var forwardIndexOid = stringOid(indexTypeForwardIndex)
var invertedIndexOid = stringOid(indexTypeInvertedIndex)
// pgCatalog contains a set of system tables mirroring PostgreSQL's pg_catalog schema.
// This code attempts to comply as closely as possible to the system catalogs documented
// in https://www.postgresql.org/docs/9.6/static/catalogs.html.
var pgCatalog = virtualSchema{
name: pgCatalogName,
undefinedTables: buildStringSet(
// Generated with:
// select distinct '"'||table_name||'",' from information_schema.tables
// where table_schema='pg_catalog' order by table_name;
"pg_pltemplate",
),
tableDefs: map[descpb.ID]virtualSchemaDef{
catconstants.PgCatalogAggregateTableID: pgCatalogAggregateTable,
catconstants.PgCatalogAmTableID: pgCatalogAmTable,
catconstants.PgCatalogAmopTableID: pgCatalogAmopTable,
catconstants.PgCatalogAmprocTableID: pgCatalogAmprocTable,
catconstants.PgCatalogAttrDefTableID: pgCatalogAttrDefTable,
catconstants.PgCatalogAttributeTableID: pgCatalogAttributeTable,
catconstants.PgCatalogAuthIDTableID: pgCatalogAuthIDTable,
catconstants.PgCatalogAuthMembersTableID: pgCatalogAuthMembersTable,
catconstants.PgCatalogAvailableExtensionVersionsTableID: pgCatalogAvailableExtensionVersionsTable,
catconstants.PgCatalogAvailableExtensionsTableID: pgCatalogAvailableExtensionsTable,
catconstants.PgCatalogCastTableID: pgCatalogCastTable,
catconstants.PgCatalogClassTableID: pgCatalogClassTable,
catconstants.PgCatalogCollationTableID: pgCatalogCollationTable,
catconstants.PgCatalogConfigTableID: pgCatalogConfigTable,
catconstants.PgCatalogConstraintTableID: pgCatalogConstraintTable,
catconstants.PgCatalogConversionTableID: pgCatalogConversionTable,
catconstants.PgCatalogCursorsTableID: pgCatalogCursorsTable,
catconstants.PgCatalogDatabaseTableID: pgCatalogDatabaseTable,
catconstants.PgCatalogDbRoleSettingTableID: pgCatalogDbRoleSettingTable,
catconstants.PgCatalogDefaultACLTableID: pgCatalogDefaultACLTable,
catconstants.PgCatalogDependTableID: pgCatalogDependTable,
catconstants.PgCatalogDescriptionTableID: pgCatalogDescriptionTable,
catconstants.PgCatalogEnumTableID: pgCatalogEnumTable,
catconstants.PgCatalogEventTriggerTableID: pgCatalogEventTriggerTable,
catconstants.PgCatalogExtensionTableID: pgCatalogExtensionTable,
catconstants.PgCatalogFileSettingsTableID: pgCatalogFileSettingsTable,
catconstants.PgCatalogForeignDataWrapperTableID: pgCatalogForeignDataWrapperTable,
catconstants.PgCatalogForeignServerTableID: pgCatalogForeignServerTable,
catconstants.PgCatalogForeignTableTableID: pgCatalogForeignTableTable,
catconstants.PgCatalogGroupTableID: pgCatalogGroupTable,
catconstants.PgCatalogHbaFileRulesTableID: pgCatalogHbaFileRulesTable,
catconstants.PgCatalogIndexTableID: pgCatalogIndexTable,
catconstants.PgCatalogIndexesTableID: pgCatalogIndexesTable,
catconstants.PgCatalogInheritsTableID: pgCatalogInheritsTable,
catconstants.PgCatalogInitPrivsTableID: pgCatalogInitPrivsTable,
catconstants.PgCatalogLanguageTableID: pgCatalogLanguageTable,
catconstants.PgCatalogLargeobjectMetadataTableID: pgCatalogLargeobjectMetadataTable,
catconstants.PgCatalogLargeobjectTableID: pgCatalogLargeobjectTable,
catconstants.PgCatalogLocksTableID: pgCatalogLocksTable,
catconstants.PgCatalogMatViewsTableID: pgCatalogMatViewsTable,
catconstants.PgCatalogNamespaceTableID: pgCatalogNamespaceTable,
catconstants.PgCatalogOpclassTableID: pgCatalogOpclassTable,
catconstants.PgCatalogOperatorTableID: pgCatalogOperatorTable,
catconstants.PgCatalogOpfamilyTableID: pgCatalogOpfamilyTable,
catconstants.PgCatalogPartitionedTableTableID: pgCatalogPartitionedTableTable,
catconstants.PgCatalogPoliciesTableID: pgCatalogPoliciesTable,
catconstants.PgCatalogPolicyTableID: pgCatalogPolicyTable,
catconstants.PgCatalogPreparedStatementsTableID: pgCatalogPreparedStatementsTable,
catconstants.PgCatalogPreparedXactsTableID: pgCatalogPreparedXactsTable,
catconstants.PgCatalogProcTableID: pgCatalogProcTable,
catconstants.PgCatalogPublicationRelTableID: pgCatalogPublicationRelTable,
catconstants.PgCatalogPublicationTableID: pgCatalogPublicationTable,
catconstants.PgCatalogPublicationTablesTableID: pgCatalogPublicationTablesTable,
catconstants.PgCatalogRangeTableID: pgCatalogRangeTable,
catconstants.PgCatalogReplicationOriginStatusTableID: pgCatalogReplicationOriginStatusTable,
catconstants.PgCatalogReplicationOriginTableID: pgCatalogReplicationOriginTable,
catconstants.PgCatalogReplicationSlotsTableID: pgCatalogReplicationSlotsTable,
catconstants.PgCatalogRewriteTableID: pgCatalogRewriteTable,
catconstants.PgCatalogRolesTableID: pgCatalogRolesTable,
catconstants.PgCatalogRulesTableID: pgCatalogRulesTable,
catconstants.PgCatalogSecLabelsTableID: pgCatalogSecLabelsTable,
catconstants.PgCatalogSecurityLabelTableID: pgCatalogSecurityLabelTable,
catconstants.PgCatalogSequenceTableID: pgCatalogSequenceTable,
catconstants.PgCatalogSequencesTableID: pgCatalogSequencesTable,
catconstants.PgCatalogSettingsTableID: pgCatalogSettingsTable,
catconstants.PgCatalogShadowTableID: pgCatalogShadowTable,
catconstants.PgCatalogSharedDescriptionTableID: pgCatalogSharedDescriptionTable,
catconstants.PgCatalogSharedSecurityLabelTableID: pgCatalogSharedSecurityLabelTable,
catconstants.PgCatalogShdependTableID: pgCatalogShdependTable,
catconstants.PgCatalogShmemAllocationsTableID: pgCatalogShmemAllocationsTable,
catconstants.PgCatalogStatActivityTableID: pgCatalogStatActivityTable,
catconstants.PgCatalogStatAllIndexesTableID: pgCatalogStatAllIndexesTable,
catconstants.PgCatalogStatAllTablesTableID: pgCatalogStatAllTablesTable,
catconstants.PgCatalogStatArchiverTableID: pgCatalogStatArchiverTable,
catconstants.PgCatalogStatBgwriterTableID: pgCatalogStatBgwriterTable,
catconstants.PgCatalogStatDatabaseConflictsTableID: pgCatalogStatDatabaseConflictsTable,
catconstants.PgCatalogStatDatabaseTableID: pgCatalogStatDatabaseTable,
catconstants.PgCatalogStatGssapiTableID: pgCatalogStatGssapiTable,
catconstants.PgCatalogStatProgressAnalyzeTableID: pgCatalogStatProgressAnalyzeTable,
catconstants.PgCatalogStatProgressBasebackupTableID: pgCatalogStatProgressBasebackupTable,
catconstants.PgCatalogStatProgressClusterTableID: pgCatalogStatProgressClusterTable,
catconstants.PgCatalogStatProgressCreateIndexTableID: pgCatalogStatProgressCreateIndexTable,
catconstants.PgCatalogStatProgressVacuumTableID: pgCatalogStatProgressVacuumTable,
catconstants.PgCatalogStatReplicationTableID: pgCatalogStatReplicationTable,
catconstants.PgCatalogStatSlruTableID: pgCatalogStatSlruTable,
catconstants.PgCatalogStatSslTableID: pgCatalogStatSslTable,
catconstants.PgCatalogStatSubscriptionTableID: pgCatalogStatSubscriptionTable,
catconstants.PgCatalogStatSysIndexesTableID: pgCatalogStatSysIndexesTable,
catconstants.PgCatalogStatSysTablesTableID: pgCatalogStatSysTablesTable,
catconstants.PgCatalogStatUserFunctionsTableID: pgCatalogStatUserFunctionsTable,
catconstants.PgCatalogStatUserIndexesTableID: pgCatalogStatUserIndexesTable,
catconstants.PgCatalogStatUserTablesTableID: pgCatalogStatUserTablesTable,
catconstants.PgCatalogStatWalReceiverTableID: pgCatalogStatWalReceiverTable,
catconstants.PgCatalogStatXactAllTablesTableID: pgCatalogStatXactAllTablesTable,
catconstants.PgCatalogStatXactSysTablesTableID: pgCatalogStatXactSysTablesTable,
catconstants.PgCatalogStatXactUserFunctionsTableID: pgCatalogStatXactUserFunctionsTable,
catconstants.PgCatalogStatXactUserTablesTableID: pgCatalogStatXactUserTablesTable,
catconstants.PgCatalogStatioAllIndexesTableID: pgCatalogStatioAllIndexesTable,
catconstants.PgCatalogStatioAllSequencesTableID: pgCatalogStatioAllSequencesTable,
catconstants.PgCatalogStatioAllTablesTableID: pgCatalogStatioAllTablesTable,
catconstants.PgCatalogStatioSysIndexesTableID: pgCatalogStatioSysIndexesTable,
catconstants.PgCatalogStatioSysSequencesTableID: pgCatalogStatioSysSequencesTable,
catconstants.PgCatalogStatioSysTablesTableID: pgCatalogStatioSysTablesTable,
catconstants.PgCatalogStatioUserIndexesTableID: pgCatalogStatioUserIndexesTable,
catconstants.PgCatalogStatioUserSequencesTableID: pgCatalogStatioUserSequencesTable,
catconstants.PgCatalogStatioUserTablesTableID: pgCatalogStatioUserTablesTable,
catconstants.PgCatalogStatisticExtDataTableID: pgCatalogStatisticExtDataTable,
catconstants.PgCatalogStatisticExtTableID: pgCatalogStatisticExtTable,
catconstants.PgCatalogStatisticTableID: pgCatalogStatisticTable,
catconstants.PgCatalogStatsExtTableID: pgCatalogStatsExtTable,
catconstants.PgCatalogStatsTableID: pgCatalogStatsTable,
catconstants.PgCatalogSubscriptionRelTableID: pgCatalogSubscriptionRelTable,
catconstants.PgCatalogSubscriptionTableID: pgCatalogSubscriptionTable,
catconstants.PgCatalogTablesTableID: pgCatalogTablesTable,
catconstants.PgCatalogTablespaceTableID: pgCatalogTablespaceTable,
catconstants.PgCatalogTimezoneAbbrevsTableID: pgCatalogTimezoneAbbrevsTable,
catconstants.PgCatalogTimezoneNamesTableID: pgCatalogTimezoneNamesTable,
catconstants.PgCatalogTransformTableID: pgCatalogTransformTable,
catconstants.PgCatalogTriggerTableID: pgCatalogTriggerTable,
catconstants.PgCatalogTsConfigMapTableID: pgCatalogTsConfigMapTable,
catconstants.PgCatalogTsConfigTableID: pgCatalogTsConfigTable,
catconstants.PgCatalogTsDictTableID: pgCatalogTsDictTable,
catconstants.PgCatalogTsParserTableID: pgCatalogTsParserTable,
catconstants.PgCatalogTsTemplateTableID: pgCatalogTsTemplateTable,
catconstants.PgCatalogTypeTableID: pgCatalogTypeTable,
catconstants.PgCatalogUserMappingTableID: pgCatalogUserMappingTable,
catconstants.PgCatalogUserMappingsTableID: pgCatalogUserMappingsTable,
catconstants.PgCatalogUserTableID: pgCatalogUserTable,
catconstants.PgCatalogViewsTableID: pgCatalogViewsTable,
},
// Postgres's catalogs are ill-defined when there is no current
// database set. Simply reject any attempts to use them in that
// case.
validWithNoDatabaseContext: false,
containsTypes: true,
}
// The catalog pg_am stores information about relation access methods.
// It's important to note that this table changed drastically between Postgres
// versions 9.5 and 9.6. We currently support both versions of this table.
// See: https://www.postgresql.org/docs/9.5/static/catalog-pg-am.html and
// https://www.postgresql.org/docs/9.6/static/catalog-pg-am.html.
var pgCatalogAmTable = virtualSchemaTable{
comment: `index access methods (incomplete)
https://www.postgresql.org/docs/9.5/catalog-pg-am.html`,
schema: vtable.PGCatalogAm,
populate: func(_ context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
// add row for forward indexes
if err := addRow(
forwardIndexOid, // oid - all versions
tree.NewDName(indexTypeForwardIndex), // amname - all versions
zeroVal, // amstrategies - < v9.6
zeroVal, // amsupport - < v9.6
tree.DBoolTrue, // amcanorder - < v9.6
tree.DBoolFalse, // amcanorderbyop - < v9.6
tree.DBoolTrue, // amcanbackward - < v9.6
tree.DBoolTrue, // amcanunique - < v9.6
tree.DBoolTrue, // amcanmulticol - < v9.6
tree.DBoolTrue, // amoptionalkey - < v9.6
tree.DBoolTrue, // amsearcharray - < v9.6
tree.DBoolTrue, // amsearchnulls - < v9.6
tree.DBoolFalse, // amstorage - < v9.6
tree.DBoolFalse, // amclusterable - < v9.6
tree.DBoolFalse, // ampredlocks - < v9.6
oidZero, // amkeytype - < v9.6
tree.DNull, // aminsert - < v9.6
tree.DNull, // ambeginscan - < v9.6
oidZero, // amgettuple - < v9.6
oidZero, // amgetbitmap - < v9.6
tree.DNull, // amrescan - < v9.6
tree.DNull, // amendscan - < v9.6
tree.DNull, // ammarkpos - < v9.6
tree.DNull, // amrestrpos - < v9.6
tree.DNull, // ambuild - < v9.6
tree.DNull, // ambuildempty - < v9.6
tree.DNull, // ambulkdelete - < v9.6
tree.DNull, // amvacuumcleanup - < v9.6
tree.DNull, // amcanreturn - < v9.6
tree.DNull, // amcostestimate - < v9.6
tree.DNull, // amoptions - < v9.6
tree.DNull, // amhandler - > v9.6
tree.NewDString("i"), // amtype - > v9.6
); err != nil {
return err
}
// add row for inverted indexes
if err := addRow(
invertedIndexOid, // oid - all versions
tree.NewDName(indexTypeInvertedIndex), // amname - all versions
zeroVal, // amstrategies - < v9.6
zeroVal, // amsupport - < v9.6
tree.DBoolFalse, // amcanorder - < v9.6
tree.DBoolFalse, // amcanorderbyop - < v9.6
tree.DBoolFalse, // amcanbackward - < v9.6
tree.DBoolFalse, // amcanunique - < v9.6
tree.DBoolFalse, // amcanmulticol - < v9.6
tree.DBoolFalse, // amoptionalkey - < v9.6
tree.DBoolFalse, // amsearcharray - < v9.6
tree.DBoolTrue, // amsearchnulls - < v9.6
tree.DBoolFalse, // amstorage - < v9.6
tree.DBoolFalse, // amclusterable - < v9.6
tree.DBoolFalse, // ampredlocks - < v9.6
oidZero, // amkeytype - < v9.6
tree.DNull, // aminsert - < v9.6
tree.DNull, // ambeginscan - < v9.6
oidZero, // amgettuple - < v9.6
oidZero, // amgetbitmap - < v9.6
tree.DNull, // amrescan - < v9.6
tree.DNull, // amendscan - < v9.6
tree.DNull, // ammarkpos - < v9.6
tree.DNull, // amrestrpos - < v9.6
tree.DNull, // ambuild - < v9.6
tree.DNull, // ambuildempty - < v9.6
tree.DNull, // ambulkdelete - < v9.6
tree.DNull, // amvacuumcleanup - < v9.6
tree.DNull, // amcanreturn - < v9.6
tree.DNull, // amcostestimate - < v9.6
tree.DNull, // amoptions - < v9.6
tree.DNull, // amhandler - > v9.6
tree.NewDString("i"), // amtype - > v9.6
); err != nil {
return err
}
return nil
},
}
var pgCatalogAttrDefTable = makeAllRelationsVirtualTableWithDescriptorIDIndex(
`column default values
https://www.postgresql.org/docs/9.5/catalog-pg-attrdef.html`,
vtable.PGCatalogAttrDef,
virtualMany, false, /* includesIndexEntries */
func(ctx context.Context, p *planner, h oidHasher, db catalog.DatabaseDescriptor, scName string,
table catalog.TableDescriptor,
lookup simpleSchemaResolver,
addRow func(...tree.Datum) error) error {
for _, column := range table.PublicColumns() {
if !column.HasDefault() {
// pg_attrdef only expects rows for columns with default values.
continue
}
displayExpr, err := schemaexpr.FormatExprForDisplay(
ctx, table, column.GetDefaultExpr(), &p.semaCtx, p.SessionData(), tree.FmtPGCatalog,
)
if err != nil {
return err
}
defSrc := tree.NewDString(displayExpr)
if err := addRow(
h.ColumnOid(table.GetID(), column.GetID()), // oid
tableOid(table.GetID()), // adrelid
tree.NewDInt(tree.DInt(column.GetPGAttributeNum())), // adnum
defSrc, // adbin
defSrc, // adsrc
); err != nil {
return err
}
}
return nil
})
var pgCatalogAttributeTable = makeAllRelationsVirtualTableWithDescriptorIDIndex(
`table columns (incomplete - see also information_schema.columns)
https://www.postgresql.org/docs/12/catalog-pg-attribute.html`,
vtable.PGCatalogAttribute,
virtualMany, true, /* includesIndexEntries */
func(ctx context.Context, p *planner, h oidHasher, db catalog.DatabaseDescriptor, scName string,
table catalog.TableDescriptor,
lookup simpleSchemaResolver,
addRow func(...tree.Datum) error) error {
// addColumn adds adds either a table or a index column to the pg_attribute table.
addColumn := func(column catalog.Column, attRelID tree.Datum, attNum uint32) error {
colTyp := column.GetType()
// Sets the attgenerated column to 's' if the column is generated/
// computed stored, "v" if virtual, zero byte otherwise.
var isColumnComputed string
if column.IsComputed() && !column.IsVirtual() {
isColumnComputed = "s"
} else if column.IsComputed() {
isColumnComputed = "v"
} else {
isColumnComputed = ""
}
// Sets the attidentity column to 'a' if the column is generated
// always as identity, "b" if generated by default as identity,
// zero byte otherwise.
var generatedAsIdentityType string
if column.IsGeneratedAsIdentity() {
if column.IsGeneratedAlwaysAsIdentity() {
generatedAsIdentityType = "a"
} else if column.IsGeneratedByDefaultAsIdentity() {
generatedAsIdentityType = "b"
} else {
return errors.AssertionFailedf(
"column %s is of wrong generated as identity type (neither ALWAYS nor BY DEFAULT)",
column.GetName(),
)
}
} else {
generatedAsIdentityType = ""
}
return addRow(
attRelID, // attrelid
tree.NewDName(column.GetName()), // attname
typOid(colTyp), // atttypid
zeroVal, // attstattarget
typLen(colTyp), // attlen
tree.NewDInt(tree.DInt(attNum)), // attnum
zeroVal, // attndims
negOneVal, // attcacheoff
tree.NewDInt(tree.DInt(colTyp.TypeModifier())), // atttypmod
tree.DNull, // attbyval (see pg_type.typbyval)
tree.DNull, // attstorage
tree.DNull, // attalign
tree.MakeDBool(tree.DBool(!column.IsNullable())), // attnotnull
tree.MakeDBool(tree.DBool(column.HasDefault())), // atthasdef
tree.NewDString(generatedAsIdentityType), // attidentity
tree.NewDString(isColumnComputed), // attgenerated
tree.DBoolFalse, // attisdropped
tree.DBoolTrue, // attislocal
zeroVal, // attinhcount
typColl(colTyp, h), // attcollation
tree.DNull, // attacl
tree.DNull, // attoptions
tree.DNull, // attfdwoptions
// These columns were automatically created by pg_catalog_test's missing column generator.
tree.DNull, // atthasmissing
// These columns were automatically created by pg_catalog_test's missing column generator.
tree.DNull, // attmissingval
)
}
// Columns for table.
for _, column := range table.AccessibleColumns() {
tableID := tableOid(table.GetID())
if err := addColumn(column, tableID, uint32(column.GetPGAttributeNum())); err != nil {
return err
}
}
// Columns for each index.
columnIdxMap := catalog.ColumnIDToOrdinalMap(table.PublicColumns())
return catalog.ForEachIndex(table, catalog.IndexOpts{}, func(index catalog.Index) error {
for i := 0; i < index.NumKeyColumns(); i++ {
colID := index.GetKeyColumnID(i)
idxID := h.IndexOid(table.GetID(), index.GetID())
column := table.PublicColumns()[columnIdxMap.GetDefault(colID)]
if err := addColumn(column, idxID, uint32(i+1)); err != nil {
return err
}
}
for i := 0; i < index.NumSecondaryStoredColumns(); i++ {
colID := index.GetStoredColumnID(i)
idxID := h.IndexOid(table.GetID(), index.GetID())
column := table.PublicColumns()[columnIdxMap.GetDefault(colID)]
if err := addColumn(column, idxID, uint32(i+1+index.NumKeyColumns())); err != nil {
return err
}
}
return nil
})
})
var pgCatalogCastTable = virtualSchemaTable{
comment: `casts (empty - needs filling out)
https://www.postgresql.org/docs/9.6/catalog-pg-cast.html`,
schema: vtable.PGCatalogCast,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
h := makeOidHasher()
cast.ForEachCast(func(src, tgt oid.Oid, cCtx cast.Context, ctxOrigin cast.ContextOrigin, _ volatility.V) {
if ctxOrigin == cast.ContextOriginPgCast {
castCtx := cCtx.PGString()
_ = addRow(
h.CastOid(src, tgt), // oid
tree.NewDOid(src), // cast source
tree.NewDOid(tgt), // casttarget
tree.DNull, // castfunc
tree.NewDString(castCtx), // castcontext
tree.DNull, // castmethod
)
}
})
return nil
},
}
func userIsSuper(
ctx context.Context, p *planner, userName username.SQLUsername,
) (tree.DBool, error) {
isSuper, err := p.UserHasAdminRole(ctx, userName)
return tree.DBool(isSuper), err
}
var pgCatalogAuthIDTable = virtualSchemaTable{
comment: `authorization identifiers - differs from postgres as we do not display passwords,
and thus do not require admin privileges for access.
https://www.postgresql.org/docs/9.5/catalog-pg-authid.html`,
schema: vtable.PGCatalogAuthID,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
h := makeOidHasher()
return forEachRole(ctx, p, func(userName username.SQLUsername, isRole bool, options roleOptions, _ tree.Datum) error {
isRoot := tree.DBool(userName.IsRootUser() || userName.IsAdminRole())
// Currently, all users and roles inherit the privileges of roles they are
// members of. See https://github.com/cockroachdb/cockroach/issues/69583.
roleInherits := tree.DBool(true)
noLogin, err := options.noLogin()
if err != nil {
return err
}
roleCanLogin := !noLogin
createDB, err := options.createDB()
if err != nil {
return err
}
rolValidUntil, err := options.validUntil(p)
if err != nil {
return err
}
createRole, err := options.createRole()
if err != nil {
return err
}
isSuper, err := userIsSuper(ctx, p, userName)
if err != nil {
return err
}
return addRow(
h.UserOid(userName), // oid
tree.NewDName(userName.Normalized()), // rolname
tree.MakeDBool(isRoot || isSuper), // rolsuper
tree.MakeDBool(roleInherits), // rolinherit
tree.MakeDBool(isRoot || createRole), // rolcreaterole
tree.MakeDBool(isRoot || createDB), // rolcreatedb
tree.MakeDBool(roleCanLogin), // rolcanlogin.
tree.DBoolFalse, // rolreplication
tree.DBoolFalse, // rolbypassrls
negOneVal, // rolconnlimit
passwdStarString, // rolpassword
rolValidUntil, // rolvaliduntil
)
})
},
}
var pgCatalogAuthMembersTable = virtualSchemaTable{
comment: `role membership
https://www.postgresql.org/docs/9.5/catalog-pg-auth-members.html`,
schema: vtable.PGCatalogAuthMembers,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
h := makeOidHasher()
return forEachRoleMembership(ctx, p.ExecCfg().InternalExecutor, p.Txn(),
func(roleName, memberName username.SQLUsername, isAdmin bool) error {
return addRow(
h.UserOid(roleName), // roleid
h.UserOid(memberName), // member
tree.DNull, // grantor
tree.MakeDBool(tree.DBool(isAdmin)), // admin_option
)
})
},
}
var pgCatalogAvailableExtensionsTable = virtualSchemaTable{
comment: `available extensions
https://www.postgresql.org/docs/9.6/view-pg-available-extensions.html`,
schema: vtable.PGCatalogAvailableExtensions,
populate: func(ctx context.Context, p *planner, _ catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
// We support no extensions.
return nil
},
unimplemented: true,
}
func getOwnerOID(ctx context.Context, p eval.Planner, desc catalog.Descriptor) (tree.Datum, error) {
owner, err := getOwnerOfPrivilegeObject(ctx, p, desc)
if err != nil {
return nil, err
}
h := makeOidHasher()
return h.UserOid(owner), nil
}
func getOwnerName(
ctx context.Context, p eval.Planner, desc catalog.Descriptor,
) (tree.Datum, error) {
owner, err := getOwnerOfPrivilegeObject(ctx, p, desc)
if err != nil {
return nil, err
}
return tree.NewDName(owner.Normalized()), nil
}
var (
relKindTable = tree.NewDString("r")
relKindIndex = tree.NewDString("i")
relKindView = tree.NewDString("v")
relKindMaterializedView = tree.NewDString("m")
relKindSequence = tree.NewDString("S")
relPersistencePermanent = tree.NewDString("p")
relPersistenceTemporary = tree.NewDString("t")
)
var pgCatalogClassTable = makeAllRelationsVirtualTableWithDescriptorIDIndex(
`tables and relation-like objects (incomplete - see also information_schema.tables/sequences/views)
https://www.postgresql.org/docs/9.5/catalog-pg-class.html`,
vtable.PGCatalogClass,
virtualMany, true, /* includesIndexEntries */
func(ctx context.Context, p *planner, h oidHasher, db catalog.DatabaseDescriptor, scName string,
table catalog.TableDescriptor, _ simpleSchemaResolver, addRow func(...tree.Datum) error) error {
// The only difference between tables, views and sequences are the relkind and relam columns.
relKind := relKindTable
relAm := forwardIndexOid
if table.IsView() {
relKind = relKindView
if table.MaterializedView() {
relKind = relKindMaterializedView
}
relAm = oidZero
} else if table.IsSequence() {
relKind = relKindSequence
relAm = oidZero
}
relPersistence := relPersistencePermanent
if table.IsTemporary() {
relPersistence = relPersistenceTemporary
}
var relOptions tree.Datum = tree.DNull
if storageParams := table.GetStorageParams(false /* spaceBetweenEqual */); len(storageParams) > 0 {
relOptionsArr := tree.NewDArray(types.String)
for _, storageParam := range storageParams {
if err := relOptionsArr.Append(tree.NewDString(storageParam)); err != nil {
return err
}
}
relOptions = relOptionsArr
}
ownerOid, err := getOwnerOID(ctx, p, table)
if err != nil {
return err
}
namespaceOid := h.NamespaceOid(db, scName)
if err := addRow(
tableOid(table.GetID()), // oid
tree.NewDName(table.GetName()), // relname
namespaceOid, // relnamespace
tableIDToTypeOID(table), // reltype (PG creates a composite type in pg_type for each table)
oidZero, // reloftype (used for type tables, which is unsupported)
ownerOid, // relowner
relAm, // relam
oidZero, // relfilenode
oidZero, // reltablespace
tree.DNull, // relpages
tree.DNull, // reltuples
zeroVal, // relallvisible
oidZero, // reltoastrelid
tree.MakeDBool(tree.DBool(table.IsPhysicalTable())), // relhasindex
tree.DBoolFalse, // relisshared
relPersistence, // relpersistence
tree.MakeDBool(tree.DBool(table.IsTemporary())), // relistemp
relKind, // relkind
tree.NewDInt(tree.DInt(len(table.AccessibleColumns()))), // relnatts
tree.NewDInt(tree.DInt(len(table.GetChecks()))), // relchecks
tree.DBoolFalse, // relhasoids
tree.MakeDBool(tree.DBool(table.IsPhysicalTable())), // relhaspkey
tree.DBoolFalse, // relhasrules
tree.DBoolFalse, // relhastriggers
tree.DBoolFalse, // relhassubclass
zeroVal, // relfrozenxid
tree.DNull, // relacl
relOptions, // reloptions
// These columns were automatically created by pg_catalog_test's missing column generator.
tree.DNull, // relforcerowsecurity
tree.DNull, // relispartition
tree.DNull, // relispopulated
tree.DNull, // relreplident
tree.DNull, // relrewrite
tree.DNull, // relrowsecurity
tree.DNull, // relpartbound
// These columns were automatically created by pg_catalog_test's missing column generator.
tree.DNull, // relminmxid
); err != nil {
return err
}
// Skip adding indexes for sequences (their table descriptors have a primary
// index to make them comprehensible to backup/restore, but PG doesn't include
// an index in pg_class).
if table.IsSequence() {
return nil
}
// Indexes.
return catalog.ForEachIndex(table, catalog.IndexOpts{}, func(index catalog.Index) error {
indexType := forwardIndexOid
if index.GetType() == descpb.IndexDescriptor_INVERTED {
indexType = invertedIndexOid
}
ownerOid, err := getOwnerOID(ctx, p, table)
if err != nil {
return err
}
return addRow(
h.IndexOid(table.GetID(), index.GetID()), // oid
tree.NewDName(index.GetName()), // relname
namespaceOid, // relnamespace
oidZero, // reltype
oidZero, // reloftype
ownerOid, // relowner
indexType, // relam
oidZero, // relfilenode
oidZero, // reltablespace
tree.DNull, // relpages
tree.DNull, // reltuples
zeroVal, // relallvisible
oidZero, // reltoastrelid
tree.DBoolFalse, // relhasindex
tree.DBoolFalse, // relisshared
relPersistencePermanent, // relPersistence
tree.DBoolFalse, // relistemp
relKindIndex, // relkind
tree.NewDInt(tree.DInt(index.NumKeyColumns())), // relnatts
zeroVal, // relchecks
tree.DBoolFalse, // relhasoids
tree.DBoolFalse, // relhaspkey
tree.DBoolFalse, // relhasrules
tree.DBoolFalse, // relhastriggers
tree.DBoolFalse, // relhassubclass
zeroVal, // relfrozenxid
tree.DNull, // relacl
tree.DNull, // reloptions
// These columns were automatically created by pg_catalog_test's missing column generator.
tree.DNull, // relforcerowsecurity
tree.DNull, // relispartition
tree.DNull, // relispopulated
tree.DNull, // relreplident
tree.DNull, // relrewrite
tree.DNull, // relrowsecurity
tree.DNull, // relpartbound
// These columns were automatically created by pg_catalog_test's missing column generator.
tree.DNull, // relminmxid
)
})
})
var pgCatalogCollationTable = virtualSchemaTable{
comment: `available collations (incomplete)
https://www.postgresql.org/docs/9.5/catalog-pg-collation.html`,
schema: vtable.PGCatalogCollation,
populate: func(ctx context.Context, p *planner, dbContext catalog.DatabaseDescriptor, addRow func(...tree.Datum) error) error {
h := makeOidHasher()
return forEachDatabaseDesc(ctx, p, dbContext, false /* requiresPrivileges */, func(db catalog.DatabaseDescriptor) error {
namespaceOid := h.NamespaceOid(db, pgCatalogName)
add := func(collName string) error {
return addRow(
h.CollationOid(collName), // oid
tree.NewDString(collName), // collname
namespaceOid, // collnamespace
tree.DNull, // collowner
builtins.DatEncodingUTFId, // collencoding
// It's not clear how to translate a Go collation tag into the format
// required by LC_COLLATE and LC_CTYPE.
tree.DNull, // collcollate
tree.DNull, // collctype
// These columns were automatically created by pg_catalog_test's missing column generator.
tree.DNull, // collprovider
tree.DNull, // collversion
tree.DNull, // collisdeterministic
)
}
if err := add(tree.DefaultCollationTag); err != nil {
return err
}
for _, tag := range collate.Supported() {
collName := tag.String()
if err := add(collName); err != nil {
return err
}
}
return nil
})
},
}
var (
conTypeCheck = tree.NewDString("c")
conTypeFK = tree.NewDString("f")
conTypePKey = tree.NewDString("p")
conTypeUnique = tree.NewDString("u")
conTypeTrigger = tree.NewDString("t")
conTypeExclusion = tree.NewDString("x")
// Avoid unused warning for constants.
_ = conTypeTrigger
_ = conTypeExclusion
fkActionNone = tree.NewDString("a")
fkActionRestrict = tree.NewDString("r")
fkActionCascade = tree.NewDString("c")
fkActionSetNull = tree.NewDString("n")
fkActionSetDefault = tree.NewDString("d")
fkActionMap = map[catpb.ForeignKeyAction]tree.Datum{
catpb.ForeignKeyAction_NO_ACTION: fkActionNone,
catpb.ForeignKeyAction_RESTRICT: fkActionRestrict,
catpb.ForeignKeyAction_CASCADE: fkActionCascade,
catpb.ForeignKeyAction_SET_NULL: fkActionSetNull,
catpb.ForeignKeyAction_SET_DEFAULT: fkActionSetDefault,
}
fkMatchTypeFull = tree.NewDString("f")
fkMatchTypePartial = tree.NewDString("p")
fkMatchTypeSimple = tree.NewDString("s")
fkMatchMap = map[descpb.ForeignKeyReference_Match]tree.Datum{
descpb.ForeignKeyReference_SIMPLE: fkMatchTypeSimple,
descpb.ForeignKeyReference_FULL: fkMatchTypeFull,
descpb.ForeignKeyReference_PARTIAL: fkMatchTypePartial,
}
)
func populateTableConstraints(
ctx context.Context,
p *planner,
h oidHasher,
db catalog.DatabaseDescriptor,
scName string,
table catalog.TableDescriptor,
tableLookup simpleSchemaResolver,
addRow func(...tree.Datum) error,
) error {
conInfo, err := table.GetConstraintInfoWithLookup(tableLookup.getTableByID)
if err != nil {
return err
}
namespaceOid := h.NamespaceOid(db, scName)
tblOid := tableOid(table.GetID())
for conName, con := range conInfo {
conoid := tree.DNull
contype := tree.DNull
conindid := oidZero
confrelid := oidZero
confupdtype := tree.DNull
confdeltype := tree.DNull
confmatchtype := tree.DNull
conkey := tree.DNull
confkey := tree.DNull
consrc := tree.DNull
conbin := tree.DNull
condef := tree.DNull
// Determine constraint kind-specific fields.
var err error
switch con.Kind {
case descpb.ConstraintTypePK:
if !p.SessionData().ShowPrimaryKeyConstraintOnNotVisibleColumns {
colHiddenMap := make(map[descpb.ColumnID]bool, len(table.AllColumns()))
for i := range table.AllColumns() {
col := table.AllColumns()[i]
colHiddenMap[col.GetID()] = col.IsHidden()
}
allHidden := true
for _, colIdx := range con.Index.KeyColumnIDs {
if !colHiddenMap[colIdx] {
allHidden = false
break
}
}
if allHidden {
continue
}
}
conoid = h.PrimaryKeyConstraintOid(db.GetID(), scName, table.GetID(), con.Index)
contype = conTypePKey
conindid = h.IndexOid(table.GetID(), con.Index.ID)
var err error
if conkey, err = colIDArrayToDatum(con.Index.KeyColumnIDs); err != nil {
return err
}
condef = tree.NewDString(tabledesc.PrimaryKeyString(table))
case descpb.ConstraintTypeFK:
conoid = h.ForeignKeyConstraintOid(db.GetID(), scName, table.GetID(), con.FK)
contype = conTypeFK
// Foreign keys don't have a single linked index. Pick the first one
// that matches on the referenced table.
referencedTable, err := tableLookup.getTableByID(con.FK.ReferencedTableID)
if err != nil {
return err
}
if refConstraint, err := tabledesc.FindFKReferencedUniqueConstraint(
referencedTable, con.FK.ReferencedColumnIDs,
); err != nil {
// We couldn't find a unique constraint that matched. This shouldn't
// happen.
log.Warningf(ctx, "broken fk reference: %v", err)
} else if idx, ok := refConstraint.(*descpb.IndexDescriptor); ok {
conindid = h.IndexOid(con.ReferencedTable.ID, idx.ID)
}
confrelid = tableOid(con.ReferencedTable.ID)
if r, ok := fkActionMap[con.FK.OnUpdate]; ok {
confupdtype = r
}
if r, ok := fkActionMap[con.FK.OnDelete]; ok {
confdeltype = r
}
if r, ok := fkMatchMap[con.FK.Match]; ok {
confmatchtype = r
}
if conkey, err = colIDArrayToDatum(con.FK.OriginColumnIDs); err != nil {
return err
}
if confkey, err = colIDArrayToDatum(con.FK.ReferencedColumnIDs); err != nil {
return err
}
var buf bytes.Buffer
if err := showForeignKeyConstraint(
&buf, db.GetName(),
table, con.FK,
tableLookup,
p.extendedEvalCtx.SessionData().SearchPath,
); err != nil {
return err
}
condef = tree.NewDString(buf.String())
case descpb.ConstraintTypeUnique:
contype = conTypeUnique
f := tree.NewFmtCtx(tree.FmtSimple)
if con.Index != nil {
conoid = h.UniqueConstraintOid(db.GetID(), scName, table.GetID(), con.Index.ID)
conindid = h.IndexOid(table.GetID(), con.Index.ID)
var err error
if conkey, err = colIDArrayToDatum(con.Index.KeyColumnIDs); err != nil {
return err
}
f.WriteString("UNIQUE (")
if err := catformat.FormatIndexElements(
ctx, table, con.Index, f, p.SemaCtx(), p.SessionData(),
); err != nil {
return err
}
f.WriteByte(')')
if con.Index.IsPartial() {
pred, err := schemaexpr.FormatExprForDisplay(ctx, table, con.Index.Predicate, p.SemaCtx(), p.SessionData(), tree.FmtPGCatalog)
if err != nil {
return err
}
f.WriteString(fmt.Sprintf(" WHERE (%s)", pred))
}
} else if con.UniqueWithoutIndexConstraint != nil {
conoid = h.UniqueWithoutIndexConstraintOid(
db.GetID(), scName, table.GetID(), con.UniqueWithoutIndexConstraint,
)
f.WriteString("UNIQUE WITHOUT INDEX (")
colNames, err := table.NamesForColumnIDs(con.UniqueWithoutIndexConstraint.ColumnIDs)
if err != nil {
return err
}
f.WriteString(strings.Join(colNames, ", "))
f.WriteByte(')')
if con.UniqueWithoutIndexConstraint.Validity != descpb.ConstraintValidity_Validated {
f.WriteString(" NOT VALID")
}
if con.UniqueWithoutIndexConstraint.Predicate != "" {
pred, err := schemaexpr.FormatExprForDisplay(ctx, table, con.UniqueWithoutIndexConstraint.Predicate, p.SemaCtx(), p.SessionData(), tree.FmtPGCatalog)
if err != nil {
return err
}