24841644892

Committed 23 Apr 2026 02:44PM UTC coverage: 85.279% (-4.0%) from 89.306%

Build # 24841644892

Build Type

push

gh-ci

Committed by

web-flow

Commit Message

feat: v1.11.0 PostgreSQL compatibility and SQL feature expansion (#2090)

* Add structured audit logging with immutable audit trail

Introduces a new --audit-log flag that records all gRPC operations as
structured JSON events in immudb's tamper-proof KV store. Events are
stored under the audit: key prefix in systemdb, queryable via Scan and
verifiable via VerifiableGet. An async buffered writer ensures minimal
latency impact. Configurable event filtering (all/write/admin) via
--audit-log-events flag.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Add PostgreSQL ORM compatibility layer and verification functions

Extend the pgsql wire protocol with immudb verification functions
(immudb_state, immudb_verify_row, immudb_verify_tx, immudb_history,
immudb_tx) accessible via standard SQL SELECT statements.

Add pg_catalog resolvers (pg_attribute, pg_index, pg_constraint,
pg_type, pg_settings, pg_description) and information_schema
resolvers (tables, columns, schemata, key_column_usage) to support
ORM introspection from Django, SQLAlchemy, GORM, and ActiveRecord.

Add PostgreSQL compatibility functions: current_database,
current_schema, current_user, format_type, pg_encoding_to_char,
pg_get_expr, pg_get_constraintdef, obj_description, col_description,
has_table_privilege, has_schema_privilege, and others.

Add SHOW statement emulation for common ORM config queries and
schema-qualified name stripping for information_schema and public
schema references.

* Implement EXISTS and IN subquery support in SQL engine

Replace the previously stubbed ExistsBoolExp and InSubQueryExp
implementations with working non-correlated subquery execution.

EXISTS subqueries resolve the inner SELECT and check if any rows
are returned. IN subqueries resolve the inner SELECT, iterate the
result set, and compare each value against the outer expression.
Both support NOT variants (NOT EXISTS, NOT IN).

Correlated subqueries (referencing outer query columns) ar... (continued)

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7254 of 10471 new or added lines in 124 files covered. (69.28%)

115 existing lines in 18 files now uncovered.

44599 of 52298 relevant lines covered (85.28%)

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97.53

/pkg/pgsql/sys/pg_index.go

/*
Copyright 2026 Codenotary Inc. All rights reserved.

SPDX-License-Identifier: BUSL-1.1
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    https://mariadb.com/bsl11/

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package sys

import (
        "context"
        "strconv"
        "strings"

        "github.com/codenotary/immudb/embedded/sql"
)

// pg_index: one row per index on a user table. indexrelid points at
// the pg_class row for the index (relkind='i'); indrelid points at
// the pg_class row for the table the index is on.
//
// indkey in real PG is an int2vector — a space-separated list of
// attnums the index covers. We emit the same textual form as varchar
// because immudb SQL doesn't have a native int2vector, and every
// client we've seen treats indkey as text anyway (psql parses it as a
// space-separated list of ints).
func init() {
        sql.RegisterSystemTable(&sql.SystemTableDef{
                Name: "pg_index",
                Columns: []sql.SystemTableColumn{
                        {Name: "indexrelid", Type: sql.IntegerType},
                        {Name: "indrelid", Type: sql.IntegerType},
                        {Name: "indnatts", Type: sql.IntegerType},
                        {Name: "indnkeyatts", Type: sql.IntegerType},
                        {Name: "indisunique", Type: sql.BooleanType},
                        {Name: "indisprimary", Type: sql.BooleanType},
                        {Name: "indisexclusion", Type: sql.BooleanType},
                        {Name: "indimmediate", Type: sql.BooleanType},
                        {Name: "indisclustered", Type: sql.BooleanType},
                        {Name: "indisvalid", Type: sql.BooleanType},
                        {Name: "indcheckxmin", Type: sql.BooleanType},
                        {Name: "indisready", Type: sql.BooleanType},
                        {Name: "indislive", Type: sql.BooleanType},
                        {Name: "indisreplident", Type: sql.BooleanType},
                        {Name: "indkey", Type: sql.VarcharType, MaxLen: 256},
                        {Name: "indcollation", Type: sql.VarcharType, MaxLen: 256},
                        {Name: "indclass", Type: sql.VarcharType, MaxLen: 256},
                        {Name: "indoption", Type: sql.VarcharType, MaxLen: 256},
                        {Name: "indexprs", Type: sql.VarcharType, MaxLen: 1},
                        {Name: "indpred", Type: sql.VarcharType, MaxLen: 1},
                },
                PKColumn: "indexrelid",
                Scan: func(ctx context.Context, tx *sql.SQLTx) ([]*sql.Row, error) {
                        cat := tx.Catalog()
                        if cat == nil {
                                return nil, nil
                        }
                        tables := cat.GetTables()
                        rows := make([]*sql.Row, 0, len(tables)*2)

                        for _, t := range tables {
                                tableOID := relOID("public", t.Name())
                                for _, idx := range t.GetIndexes() {
                                        rows = append(rows, rowPgIndex(tableOID, t, idx))
                                }
                        }
                        return rows, nil
                },
        })
}

func rowPgIndex(tableOID int64, t *sql.Table, idx *sql.Index) *sql.Row {
        cols := idx.Cols()

        // Build indkey: space-separated attnum list.
        parts := make([]string, len(cols))
        for i, c := range cols {
                parts[i] = strconv.Itoa(int(c.ID()))
        }
        indkey := strings.Join(parts, " ")

        // indcollation, indclass, indoption: vectors of the same length as
        // indkey, each a zero-value. psql's \d reads them but tolerates all
        // zeros (= default collation / default opclass / default options).
        zeros := make([]string, len(cols))
        for i := range zeros {
                zeros[i] = "0"
        }
        zerosJoined := strings.Join(zeros, " ")

        return &sql.Row{ValuesByPosition: []sql.TypedValue{
                sql.NewInteger(relOID("public", idx.Name())),
                sql.NewInteger(tableOID),
                sql.NewInteger(int64(len(cols))),
                sql.NewInteger(int64(len(cols))), // indnkeyatts — we have no INCLUDE cols
                sql.NewBool(idx.IsUnique()),
                sql.NewBool(idx.IsPrimary()),
                sql.NewBool(false), // indisexclusion
                sql.NewBool(true),  // indimmediate — always; we don't support DEFERRABLE
                sql.NewBool(false),
                sql.NewBool(true), // indisvalid
                sql.NewBool(false),
                sql.NewBool(true),
                sql.NewBool(true),
                sql.NewBool(idx.IsPrimary()), // indisreplident mirrors PK for simplicity
                sql.NewVarchar(indkey),
                sql.NewVarchar(zerosJoined),
                sql.NewVarchar(zerosJoined),
                sql.NewVarchar(zerosJoined),
                sql.NewNull(sql.VarcharType),
                sql.NewNull(sql.VarcharType),
        }}
}

1	/*
2	Copyright 2026 Codenotary Inc. All rights reserved.
3
4	SPDX-License-Identifier: BUSL-1.1
5	you may not use this file except in compliance with the License.
6	You may obtain a copy of the License at
7
8	https://mariadb.com/bsl11/
9
10	Unless required by applicable law or agreed to in writing, software
11	distributed under the License is distributed on an "AS IS" BASIS,
12	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	See the License for the specific language governing permissions and
14	limitations under the License.
15	*/
16
17	package sys
18
19	import (
20	"context"
21	"strconv"
22	"strings"
23
24	"github.com/codenotary/immudb/embedded/sql"
25	)
26
27	// pg_index: one row per index on a user table. indexrelid points at
28	// the pg_class row for the index (relkind='i'); indrelid points at
29	// the pg_class row for the table the index is on.
30	//
31	// indkey in real PG is an int2vector — a space-separated list of
32	// attnums the index covers. We emit the same textual form as varchar
33	// because immudb SQL doesn't have a native int2vector, and every
34	// client we've seen treats indkey as text anyway (psql parses it as a
35	// space-separated list of ints).
36	func init() {	13✔
37	sql.RegisterSystemTable(&sql.SystemTableDef{	13✔
38	Name: "pg_index",	13✔
39	Columns: []sql.SystemTableColumn{	13✔
40	{Name: "indexrelid", Type: sql.IntegerType},	13✔
41	{Name: "indrelid", Type: sql.IntegerType},	13✔
42	{Name: "indnatts", Type: sql.IntegerType},	13✔
43	{Name: "indnkeyatts", Type: sql.IntegerType},	13✔
44	{Name: "indisunique", Type: sql.BooleanType},	13✔
45	{Name: "indisprimary", Type: sql.BooleanType},	13✔
46	{Name: "indisexclusion", Type: sql.BooleanType},	13✔
47	{Name: "indimmediate", Type: sql.BooleanType},	13✔
48	{Name: "indisclustered", Type: sql.BooleanType},	13✔
49	{Name: "indisvalid", Type: sql.BooleanType},	13✔
50	{Name: "indcheckxmin", Type: sql.BooleanType},	13✔
51	{Name: "indisready", Type: sql.BooleanType},	13✔
52	{Name: "indislive", Type: sql.BooleanType},	13✔
53	{Name: "indisreplident", Type: sql.BooleanType},	13✔
54	{Name: "indkey", Type: sql.VarcharType, MaxLen: 256},	13✔
55	{Name: "indcollation", Type: sql.VarcharType, MaxLen: 256},	13✔
56	{Name: "indclass", Type: sql.VarcharType, MaxLen: 256},	13✔
57	{Name: "indoption", Type: sql.VarcharType, MaxLen: 256},	13✔
58	{Name: "indexprs", Type: sql.VarcharType, MaxLen: 1},	13✔
59	{Name: "indpred", Type: sql.VarcharType, MaxLen: 1},	13✔
60	},	13✔
61	PKColumn: "indexrelid",	13✔
62	Scan: func(ctx context.Context, tx sql.SQLTx) ([]sql.Row, error) {	17✔
63	cat := tx.Catalog()	4✔
64	if cat == nil {	4✔
NEW 65	return nil, nil	×
NEW 66	}	×
67	tables := cat.GetTables()	4✔
68	rows := make([]sql.Row, 0, len(tables)2)	4✔
69		4✔
70	for _, t := range tables {	8✔
71	tableOID := relOID("public", t.Name())	4✔
72	for _, idx := range t.GetIndexes() {	9✔
73	rows = append(rows, rowPgIndex(tableOID, t, idx))	5✔
74	}	5✔
75	}
76	return rows, nil	4✔
77	},
78	})
79	}
80
81	func rowPgIndex(tableOID int64, t sql.Table, idx sql.Index) *sql.Row {	5✔
82	cols := idx.Cols()	5✔
83		5✔
84	// Build indkey: space-separated attnum list.	5✔
85	parts := make([]string, len(cols))	5✔
86	for i, c := range cols {	10✔
87	parts[i] = strconv.Itoa(int(c.ID()))	5✔
88	}	5✔
89	indkey := strings.Join(parts, " ")	5✔
90		5✔
91	// indcollation, indclass, indoption: vectors of the same length as	5✔
92	// indkey, each a zero-value. psql's \d reads them but tolerates all	5✔
93	// zeros (= default collation / default opclass / default options).	5✔
94	zeros := make([]string, len(cols))	5✔
95	for i := range zeros {	10✔
96	zeros[i] = "0"	5✔
97	}	5✔
98	zerosJoined := strings.Join(zeros, " ")	5✔
99		5✔
100	return &sql.Row{ValuesByPosition: []sql.TypedValue{	5✔
101	sql.NewInteger(relOID("public", idx.Name())),	5✔
102	sql.NewInteger(tableOID),	5✔
103	sql.NewInteger(int64(len(cols))),	5✔
104	sql.NewInteger(int64(len(cols))), // indnkeyatts — we have no INCLUDE cols	5✔
105	sql.NewBool(idx.IsUnique()),	5✔
106	sql.NewBool(idx.IsPrimary()),	5✔
107	sql.NewBool(false), // indisexclusion	5✔
108	sql.NewBool(true), // indimmediate — always; we don't support DEFERRABLE	5✔
109	sql.NewBool(false),	5✔
110	sql.NewBool(true), // indisvalid	5✔
111	sql.NewBool(false),	5✔
112	sql.NewBool(true),	5✔
113	sql.NewBool(true),	5✔
114	sql.NewBool(idx.IsPrimary()), // indisreplident mirrors PK for simplicity	5✔
115	sql.NewVarchar(indkey),	5✔
116	sql.NewVarchar(zerosJoined),	5✔
117	sql.NewVarchar(zerosJoined),	5✔
118	sql.NewVarchar(zerosJoined),	5✔
119	sql.NewNull(sql.VarcharType),	5✔
120	sql.NewNull(sql.VarcharType),	5✔
121	}}	5✔
122	}

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