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This adjusts the expression evaluation code for CoerceViaIO and CoerceToDomain to handle errors softly if needed. For CoerceViaIo, this means using InputFunctionCallSafe(), which provides the option to handle errors softly, instead of calling the type input function directly. For CoerceToDomain, this simply entails replacing the ereport() in ExecEvalConstraintCheck() by errsave(). In both cases, the ErrorSaveContext to be used when evaluating the expression is stored by ExecInitExprRec() in the expression's struct in the expression's ExprEvalStep. The ErrorSaveContext is passed by setting ExprState.escontext to point to it when calling ExecInitExprRec() on the expression whose errors are to be handled softly. Note that no call site of ExecInitExprRec() has been changed in this commit, so there's no functional change. This is intended for implementing new SQL/JSON expression nodes in future commits that will use to it suppress errors that may occur during type coercions. Reviewed-by: Álvaro Herrera Discussion: https://postgr.es/m/CA+HiwqE4XTdfb1nW=Ojoy_tQSRhYt-q_kb6i5d4xcKyrLC1Nbg@mail.gmail.com |
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| configure | ||
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| README | ||
| README.git | ||
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/.