Informix Error -275: The Insert privilege is required for this operation.

Reasons / Common Causes

-275 covers two distinct situations: an ordinary missing-privilege case (the same family as -272/-273/-274), and a more substantial one — inserting into a view that doesn't qualify as updatable at all, regardless of privileges.

1. The account (nor PUBLIC, nor the current role) has been granted INSERT privilege on the table or column — the direct permissions cause, same shape as -272/-273/-274.

2. Attempting to INSERT into a non-updatable view. A view only qualifies as updatable when all of the following hold:

   • All columns derive from a single table.
   • No aggregate values appear in the projection list.
   • No UNIQUE or DISTINCT keywords are used.
   • No GROUP BY, UNION, INTERSECT, or MINUS operators are present.
   • No calculated or literal values are selected (see -234 for the specific computed-column restriction).

   Failing any one of these makes the view non-insertable, independent of privileges.

3. A view that satisfies every criterion except the single-table requirement — a multi-table join view — which needs a different mechanism entirely to support inserts.

Solutions / Resolution

1. For the ordinary permissions case, have the table/view owner or DBA grant INSERT privilege to the account, PUBLIC, or the relevant role.
2. For a non-updatable view, review its definition against the five criteria above — if it fails on aggregates, GROUP BY, UNIQUE/DISTINCT, set operators, or computed columns, direct insertion into the view isn't supported at all; insert into the underlying base table instead (see -234).
3. If only the single-table requirement fails (a multi-table join view), but INSERT and SELECT privileges are otherwise in place, define an INSTEAD OF trigger to handle insertions into the underlying base tables — the official guidance's specific, documented solution for this exact case.

Examples

The ordinary permissions grant

GRANT INSERT ON orders TO app_user;

A non-updatable view due to GROUP BY

CREATE VIEW region_totals AS
  SELECT region, COUNT(*) AS cnt FROM customer GROUP BY region;

INSERT INTO region_totals VALUES ('west', 10);
-- -275: this view has GROUP BY and an aggregate — not updatable
-- at all, regardless of privileges

An INSTEAD OF trigger for a multi-table view

CREATE VIEW order_details AS
  SELECT o.order_id, o.customer_id, c.name
  FROM orders o, customer c
  WHERE o.customer_id = c.customer_id;

CREATE TRIGGER order_details_ins INSTEAD OF INSERT ON order_details
REFERENCING NEW AS n
FOR EACH ROW
(
    INSERT INTO orders (order_id, customer_id) VALUES (n.order_id, n.customer_id)
);

INSERT INTO order_details (order_id, customer_id, name) VALUES (1001, 42, 'Jane Doe');
-- now succeeds — the trigger routes the insert to the base table

Diagnostic Checks

1. Check current INSERT privileges — account, PUBLIC, and current role.
2. Review the view's definition against the five updatability criteria if the target is a view rather than a base table.
3. Determine whether an INSTEAD OF trigger already exists, or needs to be created, for a multi-table view.

Related Errors / Related Topics

• -274 — "No DELETE permission for table." The closest privilege-family sibling.
• -234 — "Cannot insert into virtual column column-name." A related, more specific view- insertability restriction — one of the five criteria this error's broader view-updatability check encompasses.

Check whether the target is a view failing the updatability criteria before assuming this is purely a permissions issue — granting INSERT won't fix a structurally non-updatable view.