![]() ![]() We may notice new failures in ubuntu_ lttng_smoke_ test once this will compile and run. adt lttng-module fail to compile with same error lttng-smoke-test fail to compile with the error from below.Ģ. focal and bionic: Picking 4 patches from upstream lttng-modules which handle the changed interface as well as add the required code to enable that change for other versions as well:ġ. Jammy and kinetic updates are not needed for this cycle because patches from upstream stable are not applied yet but it will be needed for the next release(s).Ĭorrect changes are already in lttng-modules: master and in 2.13.8-1 version.ġ. Both adt and rt fail during compilation of the module. This is incompatible with the current changes in the lttng-module for bionic-5.4 backports, focal, jammy, and kinetic.įocal and bionic updates are needed for the current sru kernel release (2023.01.30). In those situations, a multiple row insert will be an easy solution.Ī multiple row insert statement looks like keyProperty="records.Upstream stable added a change in the format of jbd2 in 5.4.229, 5.15.87, 6.1.3. Nevertheless, there are use cases for a multiple row insert - especially when you just want to insert a few records in a table and don't need to retrieve generated keys. MyBatis currently has some limitations related to retrieving generated keys in multiple row inserts that require special considerations (see below) Retrieving generated values with multiple row inserts can be a challenge.With a batch insert, the JDBC driver can do some optimization that is not possible with a single large statement If you have many records to insert, it will almost always be more efficient to use a JDBC batch insert (see below). ![]() The performance of a giant insert statement may be less than you expect.If you want to insert many records, you should probably use a JDBC batch insert instead (see below) There are limits to the number of parameters allowed in a JDBC prepared statement - and this kind of insert could easily exceed those limits. With a multiple row insert you would generate a SQL statement with 5000 parameters. For example, suppose you wanted to insert 1000 records into a table, and each record had 5 fields. Since it is a single SQL statement, you could generate quite a lot of prepared statement parameters.This can be a convenient way to insert a few rows into a table, but it has some limitations: Multiple Row Insert SupportĪ multiple row insert is a single insert statement that inserts multiple rows into a table. where is the attribute of the record class that should be updated with the generated value. The important thing is that the keyProperty is set correctly. Int insert(InsertStatementProvider insertStatement) If youĪre using an annotated mapper, the insert method should look like this (with added for generated values if keyProperty="row.fullName") The InsertStatementProvider object can be used as a parameter to a MyBatis mapper method directly. This is appropriate when the “record” is a simple class like Integer or String.Īnnotated Mapper for Single Row Insert Statements map(column).toRow() will insert the record itself into a column.This is used to generate a “selective” insert as defined in MyBatis Generator. The value of the property will be bound to the SQL statement as a prepared statement parameter. map(column).toPropertyWhenPresent(property, Supplier valueSupplier) will insert a value from the record into a column if the value is non-null.The value of the property will be bound to the SQL statement as a prepared statement parameter map(column).toProperty(property) will insert a value from the record into a column.The constant_value will be written into the generated insert statement surrounded by single quote marks (as an SQL String) map(column).toStringConstant(constant_value) will insert a constant into a column.The constant_value will be written into the generated insert statement exactly as entered map(column).toConstant(constant_value) will insert a constant into a column.map(column).toNull() will insert a null into a column.There are several different mappings available: ![]() It is used to map a database column to an attribute of the record to insert. Int rows = mapper.insert(insertStatement) map(occupation).toProperty("occupation") InsertStatementProvider insertStatement = insert(row) SimpleTableRecord row = new SimpleTableRecord() ![]()
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