Issues · memgraph/memgraph · GitHub

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`Correlated EXISTS { ... } in WHERE may trigger internal error "Expected to generate all filters!"`

#4070

· Silence6666668 opened

on Apr 23, 2026

`List comprehension over nullable relationship properties after OPTIONAL MATCH filters out rows`

#4069

· Silence6666668 opened

on Apr 23, 2026

`UNION after MERGE may emit a spurious null row from a later OPTIONAL MATCH branch`

#4068

· Silence6666668 opened

on Apr 23, 2026

`UNION ALL with a limited read branch followed by a matched write branch hangs`

#4067

· Silence6666668 opened

on Apr 23, 2026

Memory not freed after a workload

#4060

· Josipmrden opened

on Apr 22, 2026

complex UNION + MERGE query can crash Memgraph or hang indefinitely

#4059

· d1zzy126 opened

on Apr 22, 2026

Seeking clarification: should this equivalent OPTIONAL MATCH anonymous-pattern reorder change row count only under a CALL subquery wrapper?

#4048

· d1zzy126 opened

on Apr 19, 2026

Seeking clarification: is this `OPTIONAL MATCH ... WHERE exists(variable-length pattern)` rewrite expected to cause such a large timeout regression?

#4046

· d1zzy126 opened

on Apr 19, 2026

Question: should these two single-MATCH query forms be equivalent, or is the observed result difference expected?

#4045

· d1zzy126 opened

on Apr 19, 2026

Support JSON log format

Capability - ease of use

Effort - Medium

Frequency - Monthly

Priority - Later

#4037

· orlandothoeny opened

on Apr 15, 2026

DROP GRAPH requires manual mode switch and constraint removal instead of handling cleanup itself

Capability - constraints

Capability - cypher

Capability - ease of use

Frequency - Monthly

Priority - Later

#4036

· Ana-Marija-design opened

on Apr 14, 2026

Repeated replay of preserved gdbmeter setup batches causes Memgraph RSS growth despite cleanup

Capability - memory management

Capability - stability

Effort - Unknown

Frequency - Monthly

#4024

· d1zzy126 opened

on Apr 12, 2026