[CALCITE-2713] JDBC adapter may generate casts on PostgreSQL for VARCHAR type exceeding max length

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.18.0
• Component/s: jdbc-adapter
• Assignee: Jesús Camacho Rodríguez
• Reporter: Jesús Camacho Rodríguez
• Created: 28/Nov/18 03:22
• Updated: 27/Feb/24 22:24
• Resolved: 04/Dec/18 00:21

Description

Varchar length in PostgreSQL cannot exceed 10485760, however Calcite may generate a cast with length larger than that number, resulting in an exception.

org.postgresql.util.PSQLException: ERROR: length for type varchar cannot exceed 10485760

From htup_details.h in postgresql:

* MaxAttrSize is a somewhat arbitrary upper limit on the declared size of
* data fields of char(n) and similar types.  It need not have anything
* directly to do with the *actual* upper limit of varlena values, which
* is currently 1Gb (see TOAST structures in postgres.h).  I've set it
* at 10Mb which seems like a reasonable number --- tgl 8/6/00. */

Issue Links

• is depended upon by: CALCITE-2575 Release Calcite 1.18.0
• links to: CALCITE-2713