<p>The error appears when a view references a NOT NULL table column with no default value and you try to insert or update through that view.</p>
<p>MySQL Error 1423 ER_NO_DEFAULT_FOR_VIEW_FIELD arises when a view maps to a NOT NULL column that lacks a default value. Provide a default, allow NULL, or avoid inserting through the view to eliminate the error.</p>
Field of view '%s.%s' underlying table doesn't have a
MySQL raises error 1423 when a statement tries to insert into or update a view but at least one underlying table column is NOT NULL and has no default value. Because the view does not supply that column, the server cannot create a valid row.
The failure protects data integrity. Without a supplied or default value, the base table would store undefined data, breaking referential and business rules.
The root cause is a mismatch between the view definition and the base table definition. The view omits a mandatory column, yet the application attempts to write through the view.
It most often appears in ETL jobs, ORM generated SQL, or ad-hoc inserts where developers assume the view behaves like the table.
Option 1 - add a DEFAULT clause to the missing table column so MySQL can supply a fallback value automatically.
Option 2 - alter the column to allow NULL and insert NULL from the view.
Option 3 - modify the view to include the column and pass a value in every insert.
Option 4 - stop inserting through the view and instead write directly to the base table with complete column lists.
Reporting views that intentionally hide audit columns often break bulk-load scripts. Add defaults such as CURRENT_TIMESTAMP to audit columns.
ORM frameworks that build INSERT INTO view (colA,colB) VALUES (...) fail when the view hides required foreign keys. Expose those keys or switch the ORM mapping to the table.
Design views as read-only unless every NOT NULL column is exposed or has a default. Document write restrictions in the schema.
During code review, verify that insertable views call out mandatory columns. Use automated tests that attempt a dummy insert to catch the error early.
Error 1364 Field 'col' doesn't have a default value - occurs on direct table inserts; fix by adding defaults or values.
Error 1288 HY000 The target table of the INSERT is not insertable-into - triggered by aggregate or UNION views; resolve by writing to the table instead.
Created_at or updated_at columns are NOT NULL but lack DEFAULT CURRENT_TIMESTAMP, and the view hides them.
A view omits a mandatory foreign key required by the base table, so inserts via the view fail.
ORM treats a view like a table and omits columns it does not know about, exposing the mismatch.
After adding NOT NULL columns to a table, existing views were not updated, resulting in new insert failures.
Direct table insert missing a NOT NULL column. Add a value or default.
Number of supplied values differs from column count. Align lists.
Attempt to insert into a non-insertable view like one with GROUP BY or UNION.
No. Ignoring it leaves your data load incomplete and may hide bigger schema mismatches.
No. Adding a DEFAULT only affects future inserts and leaves current rows unchanged.
Only simple views without aggregates, UNION, DISTINCT, or subqueries are insertable. Others are read-only.
Galaxy highlights NOT NULL columns during view creation and warns when you run inserts that omit required columns, letting you fix the issue before execution.
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