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2f02d4a2b9
Teach get_expr_result_type() to manufacture a tuple descriptor directly from a RowExpr node. If the RowExpr has type RECORD, this is the only way to get a tupdesc for its result, since even if the rowtype has been blessed, we don't have its typmod available at this point. (If the RowExpr has some named composite type, we continue to let the existing code handle it, since the RowExpr might well not have the correct column names embedded in it.) This fixes assorted corner cases illustrated by the added regression tests. This is a back-patch of the v13-era commit8b7a0f1d1into previous branches. At the time I'd judged it not important enough to back-patch, but the upcoming fix for bug #18077 includes a test case that depends on this working correctly; and8b7a0f1d1has now aged long enough to have good confidence that it won't break anything. Discussion: https://postgr.es/m/10872.1572202006@sss.pgh.pa.us Discussion: https://postgr.es/m/3607145.1694803130@sss.pgh.pa.us
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.