Common SQL Errors

MySQL Error 1163 ER_TABLE_CANT_HANDLE_BLOB: The used table type doesn't support BLOB/TEXT columns - How to Fix and Prevent

Galaxy Team
August 5, 2025

The error arises when you create or alter a table with BLOB or TEXT columns while using a storage engine that lacks support for these large object types.

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What is MySQL error 1163 ER_TABLE_CANT_HANDLE_BLOB?

MySQL Error 1163 ER_TABLE_CANT_HANDLE_BLOB occurs when you define BLOB or TEXT columns on a table that uses an engine without large-object support. Change the table to InnoDB or another compatible engine, or convert the column to a smaller VARCHAR/VARBINARY to resolve the problem.

Error Highlights

Typical Error Message

The used table type doesn't support BLOB/TEXT columns

Error Type

Storage Engine Limitation

Language

MySQL

Symbol

ER_TABLE_CANT_HANDLE_BLOB

Error Code

1163

SQL State

Explanation

Table of Contents

What is MySQL Error 1163 ER_TABLE_CANT_HANDLE_BLOB?

MySQL throws “The used table type doesn't support BLOB/TEXT columns” with SQL STATE 42000 when a statement references a BLOB or TEXT column on a table that uses an incompatible storage engine such as MEMORY or older MyISAM versions.

The error stops CREATE TABLE, ALTER TABLE, and some LOAD DATA operations.

It safeguards engines that cannot reliably store variable-length large objects.

When does the error appear?

The message surfaces during table creation, column addition, online schema change, or engine conversion if the chosen engine lacks BLOB/TEXT support.

It also fires when importing a dump into a server where the default storage engine cannot handle LOBs.

Developers often meet it after copying statements from another environment or when migrating tables to MEMORY for speed without checking datatype limits.

Why is it critical to fix quickly?

Ignoring the error leaves the table uncreated or altered, blocking application features that rely on LOB data such as images, logs, or JSON blobs. Fast resolution restores application functionality and keeps migrations on schedule.

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Common Causes

Cause 1: MEMORY engine limitation

MEMORY stores rows in RAM and only supports fixed-length types.

Any BLOB or TEXT definition triggers Error 1163.

Cause 2: MyISAM compiled without BLOB support

Rare custom builds or very old MyISAM variants may disable large object handling and raise the error.

Cause 3: Explicit ENGINE clause

Developers sometimes force ENGINE=MEMORY or ENGINE=MyISAM in scripts copied across projects, unaware of datatype restrictions.

Cause 4: Implicit default engine

Servers with default_storage_engine set to MEMORY on temporary databases cause silent mismatches that surface only at execution time.

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Related Errors

FAQs

Can I store BLOB data in MEMORY tables?

No. MEMORY cannot save variable-length BLOB or TEXT fields. Use InnoDB or store the file path instead.

Will converting to VARBINARY affect performance?

For small payloads under 64 KB, VARBINARY offers better in-row storage and indexing than BLOB. Larger data still needs BLOB.

Does MariaDB show the same error code?

Yes. MariaDB retains MySQL error code 1163 and identical wording for this limitation.

How can Galaxy help avoid this?

Galaxy’s schema-aware linting flags unsupported datatypes during query composition and suggests compliant engines before execution.

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