On Wed, 2022-10-19 at 09:50 +0300, Yavuz TANRIVERDİ wrote: > i have an > "ERROR: UNION types "char" and text cannot be matched CASE WHEN indisprimary THEN" > error from > https://github.com/yiisoft/yii/blob/e7c298343bf1f76186d443b62ff853d2d36e19f0/framework/db/schema/pgsql/CPgsqlSchema.php#L233 > I read release notes, but can't find any related change, > It works for PostgreSQL 14.5 but fails with PostgreSQL 15.0, a test sample below. > Is this error expected ? Yes, it is. See this paragraph from the release notes (https://www.postgresql.org/docs/current/release-15.html#id-1.11.6.5.5.13): - Create a new pg_type.typcategory value for "char" (Tom Lane) Some other internal-use-only types have also been assigned to this category. Perhaps that should have been listed as a potential compatibility break, but the documentation explicity says that "char" is not intended for use by the end user (https://www.postgresql.org/docs/current/datatype-character.html): > These are not intended for general-purpose use, only for use in the internal system catalogs. You will have to add an explicit type cast. Yours, Laurenz Albe