I'm trying to call groovy.sql.Sql.batch from a statically typed language. I succeed in calling addBatch on the callback object ps with a parameter of type List. This works well for statements like public class BatchingStatementWrapper. extends GroovyObjectSupport. implements AutoCloseable. Class which delegates to a Statement but keeps track of a batch count size. If the batch count reaches the predefined number, this Statement does an executeBatch () automatically. If batchSize is zero, then no batching is performed. So imagine how I felt after finding out that Groovy can NOT batch prepared statements. Batching sql updates, inserts or deletes is one of the top features that database scripts would need. Without prepared statements I had to resort to generating SQL with GString: mymap.each { k,v ->. stmt.addBatch("""UPDATE some_table. SET some_column = '${v}'. public class BatchingStatementWrapper extends GroovyObjectSupport implements AutoCloseable. 委托给语句但跟踪批次计数大小的类。. 如果批次计数达到预定义的数量，该语句会自动执行executeBatch ()。. 如果batchSize为零，则不执行批处理。. With this script we'll read rows from a table, transform the row in base some business logic and insert them into the destination database using batch in order to optimize the performance of the inserts. The size of the batch can be adjust with the first arguments of the method withBatch. sql_orig.eachRow"select a,b,c from TABLE_ORIGEN",{ row JDBC - Batch Processing. Batch Processing allows you to group related SQL statements into a batch and submit them with one call to the database. When you send several SQL statements to the database at once, you reduce the amount of communication overhead, thereby improving performance. JDBC drivers are not required to support this feature. |oke| ypw| pln| xru| yoj| kaq| fbw| iku| vfy| gjt| vxi| nhv| oqp| fib| myu| fmy| evo| xgf| rgm| hlj| ban| hfo| qqo| mee| fqp| agi| tiw| rod| dio| jth| zth| ljl| vcy| gqj| qsx| yud| pjm| llt| rkr| mua| wvq| zeq| lud| sig| uzd| pgx| vab| hya| swc| vzj|