24841571249

Committed 23 Apr 2026 02:44PM UTC coverage: 85.275% (-4.0%) from 89.306%

Build # 24841571249

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)

Coverage Stats

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

119 existing lines in 18 files now uncovered.

44597 of 52298 relevant lines covered (85.27%)

127591.66 hits per line

Source File
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89.47

/pkg/pgsql/sys/pg_collation.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"

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

// pg_collation: collation metadata. immudb has no collation support
// (the default byte-wise comparison is always in effect), so this
// table is always empty. Registered non-empty-schema purely so the
// dispatcher's allPgRefsRegistered passthrough accepts psql's `\d`
// collation subquery:
//
//        (SELECT c.collname FROM pg_catalog.pg_collation c, pg_catalog.pg_type t
//         WHERE c.oid = a.attcollation AND t.oid = a.atttypid
//               AND a.attcollation <> t.typcollation) AS attcollation
//
// With the table registered empty the subquery correlates to zero
// rows and psql shows an empty "Collation" column — correct for
// immudb which has no per-column collation concept.
func init() {
        sql.RegisterSystemTable(&sql.SystemTableDef{
                Name: "pg_collation",
                Columns: []sql.SystemTableColumn{
                        {Name: "oid", Type: sql.IntegerType},
                        {Name: "collname", Type: sql.VarcharType, MaxLen: 64},
                        {Name: "collnamespace", Type: sql.IntegerType},
                        {Name: "collowner", Type: sql.IntegerType},
                        {Name: "collprovider", Type: sql.VarcharType, MaxLen: 1},
                        {Name: "collisdeterministic", Type: sql.BooleanType},
                        {Name: "collencoding", Type: sql.IntegerType},
                        {Name: "collcollate", Type: sql.VarcharType, MaxLen: 64},
                        {Name: "collctype", Type: sql.VarcharType, MaxLen: 64},
                        {Name: "collversion", Type: sql.VarcharType, MaxLen: 64},
                },
                PKColumn: "oid",
                Scan: func(ctx context.Context, tx *sql.SQLTx) ([]*sql.Row, error) {
                        return nil, nil
                },
        })
}

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
22	"github.com/codenotary/immudb/embedded/sql"
23	)
24
25	// pg_collation: collation metadata. immudb has no collation support
26	// (the default byte-wise comparison is always in effect), so this
27	// table is always empty. Registered non-empty-schema purely so the
28	// dispatcher's allPgRefsRegistered passthrough accepts psql's `\d`
29	// collation subquery:
30	//
31	// (SELECT c.collname FROM pg_catalog.pg_collation c, pg_catalog.pg_type t
32	// WHERE c.oid = a.attcollation AND t.oid = a.atttypid
33	// AND a.attcollation <> t.typcollation) AS attcollation
34	//
35	// With the table registered empty the subquery correlates to zero
36	// rows and psql shows an empty "Collation" column — correct for
37	// immudb which has no per-column collation concept.
38	func init() {	13✔
39	sql.RegisterSystemTable(&sql.SystemTableDef{	13✔
40	Name: "pg_collation",	13✔
41	Columns: []sql.SystemTableColumn{	13✔
42	{Name: "oid", Type: sql.IntegerType},	13✔
43	{Name: "collname", Type: sql.VarcharType, MaxLen: 64},	13✔
44	{Name: "collnamespace", Type: sql.IntegerType},	13✔
45	{Name: "collowner", Type: sql.IntegerType},	13✔
46	{Name: "collprovider", Type: sql.VarcharType, MaxLen: 1},	13✔
47	{Name: "collisdeterministic", Type: sql.BooleanType},	13✔
48	{Name: "collencoding", Type: sql.IntegerType},	13✔
49	{Name: "collcollate", Type: sql.VarcharType, MaxLen: 64},	13✔
50	{Name: "collctype", Type: sql.VarcharType, MaxLen: 64},	13✔
51	{Name: "collversion", Type: sql.VarcharType, MaxLen: 64},	13✔
52	},	13✔
53	PKColumn: "oid",	13✔
54	Scan: func(ctx context.Context, tx sql.SQLTx) ([]sql.Row, error) {	13✔
NEW 55	return nil, nil	×
NEW 56	},	×
57	})
58	}

codenotary / immudb / 24841571249

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