Syntax error in compiled SQL: A dbt macro or Jinja template renders invalid SQL at compile time — for example a missing comma after a CTE block, a trailing comma before FROM, or an unsupported function alias syntax. The error fires on the compiled query, not the template, so you need to inspect the file in target/compiled/.. Insufficient privilege on the target object: The pipeline service account has SELECT on a table but not EXECUTE on a function it calls, or lacks USAGE on the schema that owns the object. PostgreSQL checks privileges per object and the error message names the specific object that was denied.. Row-level security policy blocking the statement: RLS is enabled on a table and no policy matches the current role. PostgreSQL returns 42000 (or the subcode 42501) rather than returning zero rows, so the pipeline sees a hard failure instead of an empty result set.. Reserved keyword used as identifier without quoting: A column or table named 'user', 'value', 'order', or 'select' causes a parse error when referenced without double-quotes. This is common when column names are generated programmatically or imported from another system.. Function or operator does not exist for the given argument types: Calling a function with mismatched argument types (e.g. passing a varchar where timestamptz is expected) can surface as a 42000-class error rather than the more specific 42883, depending on the PostgreSQL version and driver.. Unsupported SQL construct in the target PostgreSQL version: A query written for PostgreSQL 15 uses a MERGE statement or a new window function syntax not available in the PostgreSQL 12 instance it runs against. The parser rejects it outright.. Security definer function called by an unprivileged role: A SECURITY DEFINER function runs as its owner, but if the calling role lacks EXECUTE on the function itself, PostgreSQL blocks the call before even entering the function body and raises 42000.

Step 1: Read the full error detail. The message format is 'ERROR: DETAIL: HINT: '. The DETAIL line names either the exact syntax position (character N in the statement) or the specific object and privilege that was denied. Do not skip this line.. Step 2: For syntax errors, extract the compiled SQL and run it directly. In dbt, find the file under target/compiled/ / .sql and run it in psql or pgAdmin against the target schema. psql will show the caret (^) pointing at the offending token: `psql -h -U -d -f target/compiled/ / .sql`. Step 3: Check the privilege matrix for the service account. Run `\dp . ` in psql, or query the information schema: `SELECT grantee, privilege_type, is_grantable FROM information_schema.role_table_grants WHERE table_name = ' ';` Verify SELECT, USAGE on schema, and EXECUTE on any called functions.. Step 4: Check whether RLS is active on the relevant table and whether a policy covers the pipeline role: `SELECT tablename, rowsecurity FROM pg_tables WHERE tablename = ' '; SELECT polname, polroles, polcmd, polqual FROM pg_policy WHERE polrelid = ' . '::regclass;` If no policy covers the role, either add one or grant BYPASSRLS (use with care).. Step 5: Verify reserved keyword collisions. If the error message says 'syntax error at or near "user"' (or another keyword), double-quote the identifier in the query: `SELECT "user", "order" FROM public.events;` Update the dbt model or ADF query to use quoted identifiers consistently.. Step 6: Confirm the PostgreSQL server version supports the SQL construct you are using: `SELECT version();` Cross-check against the PostgreSQL release notes for the version on your server. Downgrade the SQL syntax if needed or upgrade the server.. Step 7: Grant the missing privilege with the least-privilege principle. Example for a missing EXECUTE: `GRANT EXECUTE ON FUNCTION public.calculate_margin(numeric, numeric) TO pipeline_user;` For schema USAGE: `GRANT USAGE ON SCHEMA analytics TO pipeline_user;` Re-run the pipeline after each grant to confirm resolution.

Medium severitypermissions

PostgreSQL Error:
42000

Impact

When 42000 appears in a scheduled ADF pipeline or dbt job, every downstream model or dataset that depends on the failed step gets stale data without any alert unless your orchestrator is configured to propagate failures. If the failed table is part of a daily SLA report, the report will silently show yesterday's numbers.

A 42000 error causes an immediate hard abort — no rows are written, no partial commit occurs. ADF marks the activity as Failed and stops the pipeline unless a failure path is configured. dbt marks the model as ERROR and skips all models that ref() it, leaving downstream tables with their previous data. Because the error is deterministic (not transient), retry logic offers no benefit and will exhaust retry budgets without resolving the issue, delaying detection of the real problem.

What does this error mean?

SQLSTATE 42000 is PostgreSQL's catch-all error class for statements that fail before execution due to either a syntax problem or a privilege check. The server parsed the SQL but rejected it — either because the grammar is invalid (a missing keyword, misplaced parenthesis, or unsupported function call) or because the executing role lacks the required privilege (SELECT, EXECUTE, USAGE, or a row-level security policy blocks access). In a data pipeline this surfaces as a hard failure: the ADF activity, dbt model run, or COPY job aborts immediately with no rows written and no retry helping unless the underlying SQL or permission is fixed first.

Common causes

1Syntax error in compiled SQL: A dbt macro or Jinja template renders invalid SQL at compile time — for example a missing comma after a CTE block, a trailing comma before FROM, or an unsupported function alias syntax. The error fires on the compiled query, not the template, so you need to inspect the file in target/compiled/.
2Insufficient privilege on the target object: The pipeline service account has SELECT on a table but not EXECUTE on a function it calls, or lacks USAGE on the schema that owns the object. PostgreSQL checks privileges per object and the error message names the specific object that was denied.
3Row-level security policy blocking the statement: RLS is enabled on a table and no policy matches the current role. PostgreSQL returns 42000 (or the subcode 42501) rather than returning zero rows, so the pipeline sees a hard failure instead of an empty result set.
4Reserved keyword used as identifier without quoting: A column or table named 'user', 'value', 'order', or 'select' causes a parse error when referenced without double-quotes. This is common when column names are generated programmatically or imported from another system.
5Function or operator does not exist for the given argument types: Calling a function with mismatched argument types (e.g. passing a varchar where timestamptz is expected) can surface as a 42000-class error rather than the more specific 42883, depending on the PostgreSQL version and driver.
6Unsupported SQL construct in the target PostgreSQL version: A query written for PostgreSQL 15 uses a MERGE statement or a new window function syntax not available in the PostgreSQL 12 instance it runs against. The parser rejects it outright.
7Security definer function called by an unprivileged role: A SECURITY DEFINER function runs as its owner, but if the calling role lacks EXECUTE on the function itself, PostgreSQL blocks the call before even entering the function body and raises 42000.

How to fix it

1Step 1: Read the full error detail. The message format is 'ERROR: <message> DETAIL: <detail> HINT: <hint>'. The DETAIL line names either the exact syntax position (character N in the statement) or the specific object and privilege that was denied. Do not skip this line.
2Step 2: For syntax errors, extract the compiled SQL and run it directly. In dbt, find the file under target/compiled/<project>/<model>.sql and run it in psql or pgAdmin against the target schema. psql will show the caret (^) pointing at the offending token: `psql -h <host> -U <user> -d <db> -f target/compiled/<project>/<model>.sql`
3Step 3: Check the privilege matrix for the service account. Run `\dp <schema>.<table>` in psql, or query the information schema: `SELECT grantee, privilege_type, is_grantable FROM information_schema.role_table_grants WHERE table_name = '<table>';` Verify SELECT, USAGE on schema, and EXECUTE on any called functions.
4Step 4: Check whether RLS is active on the relevant table and whether a policy covers the pipeline role: `SELECT tablename, rowsecurity FROM pg_tables WHERE tablename = '<table>'; SELECT polname, polroles, polcmd, polqual FROM pg_policy WHERE polrelid = '<schema>.<table>'::regclass;` If no policy covers the role, either add one or grant BYPASSRLS (use with care).
5Step 5: Verify reserved keyword collisions. If the error message says 'syntax error at or near "user"' (or another keyword), double-quote the identifier in the query: `SELECT "user", "order" FROM public.events;` Update the dbt model or ADF query to use quoted identifiers consistently.
6Step 6: Confirm the PostgreSQL server version supports the SQL construct you are using: `SELECT version();` Cross-check against the PostgreSQL release notes for the version on your server. Downgrade the SQL syntax if needed or upgrade the server.
7Step 7: Grant the missing privilege with the least-privilege principle. Example for a missing EXECUTE: `GRANT EXECUTE ON FUNCTION public.calculate_margin(numeric, numeric) TO pipeline_user;` For schema USAGE: `GRANT USAGE ON SCHEMA analytics TO pipeline_user;` Re-run the pipeline after each grant to confirm resolution.

Example log output

ERROR:  permission denied for table dim_customers
DETAIL:  User "pipeline_svc" requires SELECT privilege on relation public.dim_customers.
CONTEXT:  SQL function "get_active_customers" during inlining

Frequently asked questions

42000 postgres fix — where do I start?

Start with the DETAIL line in the error message: it tells you whether this is a syntax issue (look for 'syntax error at or near' and a character position) or a privilege issue (look for 'permission denied for'). Syntax errors require fixing the SQL in the compiled query file; privilege errors require a GRANT statement run by a superuser or the object owner.

SQLSTATE 42000 retry — will retrying fix it?

No. SQLSTATE 42000 is a deterministic error — the same SQL with the same role will always fail until either the SQL is corrected or the privilege is granted. Configuring retries in ADF or Airflow will not help and will slow down detection. Disable retries for this error class and route to a failure notification instead.

42000 dbt model — how do I find the bad SQL?

Run `dbt compile` to generate target/compiled/<project_name>/models/<path>/<model>.sql without executing it. Open that file and paste it into psql or pgAdmin connected to your target database. The database will report the exact line and character position of the syntax error, which is much easier to read than the dbt error output.

Syntax error or access rule violation — how do I tell which one it is?

The two subtypes appear in the error message text. Syntax errors say 'syntax error at or near "<token>"' and include a character offset. Access rule violations say 'permission denied for table/function/schema <name>' or 'new row violates row-level security policy'. If the message is ambiguous, check pg_last_error() or the PostgreSQL log at log_min_messages = ERROR for the full context line.

Source · www.postgresql.org/docs/current/errcodes-appendix.html