Makes use of the same functionality as the legacy Session.execute() method now invokes a “bulk insert”, which A list of parameterĭictionaries sent to the parameter, separateįrom the Insert object itself, will invoke bulk INSERT modeįor the statement, which essentially means the operation will optimizeĬhanged in version 2.0: Passing an Insert construct to the ORM UPDATE and DELETE with Custom WHERE CriteriaĪ insert() construct can be constructed in terms of an ORM classĪnd passed to the Session.execute() method. ORM Bulk Insert with Per Row SQL Expressions The following table summarizes the calling forms that are discussed in this Make use of UPDATE for rows that already exist. There is also dialect-specific supportįor ORM-enabled “upserts”, which are INSERT statements that automatically In various ways which are each used to INSERT, UPDATE, or DELETE Select objects, can also accommodate ORM-enabled The Session.execute() method, in addition to handling ORM-enabled Mappings shown in the section Mapping Class Inheritance Hierarchies. SQLAlchemy Unified Tutorial, shown in the sectionĭeclaring Mapped Classes, as well as inheritance This section makes use of ORM mappings first illustrated in the
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