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Graph/pagination-count-mis-specified

AntiPattern

Query Pagination Mis-specification

pagination-count-mis-specified

Spring-generated count queries and pagination parameters mis-handle the intended sort/filter or collection semantics, causing invalid SQL or incorrect aggregates (e.g., counts with ORDER BY, or selecting a single field for whole lists).

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Updated7/24/2026

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30 linked nodes

MATCHESSolution

don't destructure the query — To fix. Outcome: if (!filesQuery.isSuccess) return.

MATCHESSolution

Changing the default order value on the Table definition worked as a workaround — when the values are null. Tension: not retrieving false ('none' state). Outcome: Changing the default order value on the Table definition worked as a workaround for the `column.getNextSortingOrder()` function work as I expected.

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so you need to provide all 3 type parameters — const queryFn: QueryFunction>> = ({pageParam}) => ... Outcome: const queryFn: QueryFunction>, QueryKey, number> = ({pageParam}) =>.

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the existing validate.ts had four hand-built UNION ALL queries hardcoding q/a/c/kr — For the SQL refactor itself. Tension: each query has different per-table column projections. Outcome: The cleanest pattern.

MATCHESSolution

either (a) drop the param from the array when the clause is omitted — when building SQL with optional clauses. Tension: requires dynamic position recomputation, error-prone. Outcome: (b) is safer for most cases.

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More complex, multi-statement queries, or things like `insert..on conflict` and `merge`.

MATCHESSolution

Drop ORDER BY when there's no LIMIT. Tension: Salience ordering only matters when you're picking the top-K. Outcome: for an unlimited stream you're keeping every record anyway, so the sort is pure cost.

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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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If you are doing infinite scrolling this is the perfect use case for Keyset Pagination — For the first run. Tension: On the subsequent runs, add a `WHERE` predicate. Outcome: and `$4` should be the highest ID you got on the previous run.

MATCHESSolution

annotate fields(ex: id) with `sequenceGenerator` not the Entity or class — @Entity @Table(name = "ENTITY") public class ENTITY extends PanacheEntityBase. Tension: those values are inconsistent. Outcome: @Id @SequenceGenerator(name = "ID_SEQ", sequenceName = "ID_SEQ", allocationSize =100) public Integer id;.

MATCHESSolution

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).

MATCHESSolution

Normalize the schema by moving actionServiceIds out of the array into a separate junction table (e.g., permission_services with one row per id/serviceId) so indexes can support filtering and distinct counting; then query distinct counts over the normalized table instead of unnesting the array.

MATCHESSolution

Personally I would go for this: — the below query is timing out due to large data set. Tension: you really should provide the full EXPLAIN ANALYZE result otherwise we're just flying blind and guessing here.

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a workaround for this — when directly fetching objects using findById. Tension: the bug is still there. Outcome: There is an existing bug in Hibernate 6.2.

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Avoid `select('*')` and instead explicitly select only the allowed columns (e.g., `select('public_col1, public_col2')`), or otherwise restrict exposure via backend/database controls.

MATCHESSolution

Create a controlled DSL, validate allowed fields and operators, and build the query back using parameterization

MATCHESSolution

it has to come as options in the second argument when using the listBy* queries — using the listBy* queries. Outcome: client.model.Messages.listByTimestamp({ // fields you need }, { limit: 10, nextToken: nextToken, sortDirection: "DESC" });.

MATCHESSolution

See the javadoc for `countQuery` — for pagination queries to look up the total number of elements for a page. Tension: it is using the original query (including the sort) to perform the count which results in an invalid query. Outcome: add a custom count query which excludes the sort and everything should work as expected.

MATCHESSolution

is used page PageableDefault. Tension: I can succesfully use pagination `/demo?page=0&size=1` and sorting `/demo?sort=amount,desc` but I cannot use the combination `/demo?page=0&size=1&sort=amount. Outcome: it works.

MATCHESSolution

if you use derived queries.

MATCHESSolution

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

Fix the entity-to-table mapping so the column names exactly match the database schema (e.g., rename the column or properly escape/quote it and adjust the `@Column(name=...)` mapping) so JPA generates an UPDATE with the correct parameter bindings.

MATCHESSolution

After debugging the QueryRunner code — PreparedStatement.getParameterMetaData. Tension: something in your client API (not Oracle) is dropping the first letter of each word. Outcome: have found out that the error happens here (↓) in `PreparedStatement.getParameterMetaData`.

MATCHESSolution

the solution shown below — exceeding the SQL parameter limit. Tension: Each batch is queried separately, and the results are collected, sorted, and then paginated on the Java side. Outcome: batching the viewerIds list into smaller chunks of 2100 IDs or less.

MATCHESSolution

allTickets.sort(Comparator.comparing(Ticket::getSomeField));. Tension: Apply pagination on the sorted list. Outcome: return new PageImpl<>(allTickets.subList(start, end), pageable, allTickets.size()).

MATCHESSolution

Using what you have, the JPQL will be simply: `"Select sr FROM Staff s join s.adminStaffResponses sr where s.id = :staffId"` — if you wish to avoid the extra join the JPQL requires from Staff->admin_staff_responses. Tension: might not affect performance enough to be worth changing and complicating your model. Outcome: Using an intermediary class can allow you to access the admin_staff_responses table directly in JPQL.

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Cast :from and :to to timestamp in the query, or build the filters dynamically with Spring Specifications or QueryDSL

MATCHESSolution

for custom JPA configuration. Outcome: Modify to this:.

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Use the JPQL/HQL variant that adds an OVER clause with partitioning (and ordering) so Hibernate accepts ARRAY_AGG, returning the projection via a constructor expression.

MATCHESSolution

Use Django ORM aggregation to group by the two fields and filter groups with count greater than one

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