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Graph/db-type-mismatch-scalar-params

AntiPattern

Database Type Mismatch

db-type-mismatch-scalar-params

PostgreSQL/Neo4j rejects queries when parameter or return types don’t match engine expectations, e.g., passing numeric values as floats, calling missing functions, or returning multi-row/multi-column results from scalar PL/pgSQL contexts.

Node Details

Public graph metadata

Updated7/6/2026

Connections

30 linked nodes

MATCHESSolution

You can get rid of this TypeScript issue by casting the column definition arrays — when defining columns.

MATCHESSolution

How to fix this issue — Next.js project deployed on Vercel. Tension: SQLite is incompatible with serverless environments. Outcome: Consider cloud databases like Postgres Neon, Turso, or Vercel Postgres.

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Use a Postgres client with SNI support or pass the endpoint ID as options=endpoint%3D

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Changing it to `postgresql+asyncpg://` solved the error — In the `.env` file. Tension: `DB_ASYNC_TEST_CONNECTION_STR="postgresql://postgres:pass/db_tests" `. Outcome: Changing it to `postgresql+asyncpg://` solved the error.

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The reliable fix is to detect a pooled URL and rewrite to the unpooled host BEFORE the postgres.js client is initialized — For backfill / admin scripts (Drizzle paths). Tension: postgres.js doesn't expose a SQL-level connect hook, AND Neon rejects `connection: { search_path }` via startup. Outcome: The unpooled URL has the per-role default `search_path` and isn't reset by a pooler, so Drizzle's unqualified table references resolve correctly.

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brew services stop postgresql@15 — problem deals with postgres on localhost. Tension: psql -h localhost -p 5432 -U username -d dbname. Outcome: After these commands I can connect to DB.

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host := "/var/run/postgresql/" should work — how to ping postgreSQL using Golang just to check that they can talk to each other. Tension: password authentication failed for user "eos_user". Outcome: Successfully connected to PostgreSQL over UNIX socket!

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You need dynamic SQL to do this properly. — in PostgreSQL, I am trying to have SQL which orders by multiple columns. Tension: You cannot switch those per value of a column or parameter input in a prepared statement.

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Please try adding this piece of code `NpgsqlConnection.GlobalTypeMapper.EnableDynamicJson();` — as mentioned in this page https://www.npgsql.org/doc/types/json.html?tabs=global.

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Double-check that the search path is correctly set to include the public schema — the extension was installed in the public schema. Tension: it still didn't work. Outcome: You can set the search path in your PostgreSQL configuration or via the connection string like so.

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Tension: which is not the default, and that you use the same locale as you are using in Javascript. Outcome: create your PostgreSQL database with an ICU locale.

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alter table test add column txt_tsv tsvector generated always as (to_tsvector('english',txt)) stored; — retrieve all rows from a PostgreSQL database that contain sentences similar to a provided string. Tension: I attempted to use the fuzzy matching functionality available in PostgreSQL, but it didn't produce the desired results for me. Outcome: where txt_tsv @@ plainto_tsquery('the quick brown fox jumps over the lazy dog');.

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Latest version support it. — adding to connection string. Outcome: jdbc:h2:mem:my_db;MODE=PostgreSQL.

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Postgres converts each syn filename to lowercase — that's why it can't find "am56314Syn". Tension: it can't find "am56314Syn". Outcome: Change it to "am56314syn".

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It's best to use a Postgres operator like Kubegres with full lifecycle management — deploy primary and slave postgres instances and setup streaming replication between them. Tension: you would need to perform them manually. Outcome: automatic backup and failover support.

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Fix the connection string by using a password without problematic characters or properly percent-encoding the password (e.g., encodeURIComponent) before forming the postgres:// URL.

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Please help me to achieve this. — I need to update a jsonb object in PostgreSQL. Tension: correct syntax for updating the same.

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Here's the only change I had to make: — to allow you migrate to Hibernate 6. Tension: the solution must work with named queries. Outcome: @Enumerated(EnumType.STRING) @Type(PostgreSQLEnumType.class).

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def prc_mymys_update(procedure: str, type_agg: str, ti):. Tension: If you need to write a custom task, you need to render the template values explicitly. Outcome: with PostgresHook(postgres_conn_id=CONNECTION_ID_GP).get_conn() as conn:.

MATCHESSolution

Spring context. Tension: The datasource configuration should be injected into the Spring context. Outcome: registry.add("spring.datasource.url", postgreSQLContainer ::getJdbcUrl); registry.add("spring.datasource.username", postgreSQLContainer ::getUsername); registry.add("spring.datasource.password", postgreSQLContainer ::getPassword);.

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Define a composite type (e.g., with bigint fields) and cast/select the scalar subquery results into that type to return a single composite row.

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Ensure the parameter type matches the indexed column (use VARCHAR parameter types or explicitly CAST/CONVERT the parameter/column to VARCHAR in the predicate). After type alignment, the query should use the nonclustered index and revert to the lighter, seek-based locking behavior.

MATCHESSolution

Use PostgreSQL’s array comparison operator instead, e.g. `SELECT * FROM messages WHERE id = ANY(?::bigint[])` (or pass an array literal like `= ANY('{1,2}'::bigint[])`).

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in PostgreSQL you should define enum with uppercase — and in java just define entity and enum without any converter. Tension: the column is of type enum. Outcome: and it will be stored in database.

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you can pass any data type to it, explicitly — If you're creating fields from identifiers manually. Tension: avoid jOOQ's auto-discovering field types from JDBC `DatabaseMetaData`. Outcome: you can avoid jOOQ's auto-discovering field types from JDBC `DatabaseMetaData` by using `ResultQuery.coerce()`.

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classpath("org.flywaydb:flyway-database-postgresql:11.1.0"). Tension: Execution failed for task ':flywayMigrate'. Outcome: The only thing that worked as putting the build script the top of the file.

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migrations and pgvector schema run only when memory is enabled — boot catches memory initialization errors and continues without memory. Tension: normal unit tests do not require Postgres. Outcome: Tests use fake MemorySystem objects.

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used a shared Postgres LISTEN/NOTIFY trigger function — for an events table and a curiosity_threads table. Tension: TG_TABLE_NAME was child partition name. Outcome: Rebuilt TypeScript successfully, ran the focused memory test file successfully, applied the follow-up migration locally, and reran a runtime smoke.

MATCHESSolution

Re-export int from neo4j-driver (as neo4jInt) from the graph package barrel — In tool handlers, wrap all Cypher integer params. Tension: Apply to LIMIT, maxLevel, and any other integer-typed Cypher parameter. Outcome: Alternatively, use neo4j-driver's int() directly if the package is a dependency.

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What relationships actually exist? — MATCH ()-[r]->() RETURN type(r), count(r) ORDER BY count(r) DESC. Tension: What your projection expects vs what exists. Outcome: check your projection.

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