Spring Data Jpa Call Sequence Nextval, However, you probably don't want to do that. If you need generated ID from the sequence earlier, just persist the object and retrieve its ID. 序列简介 序列（Sequence）是数据库中用于生成唯一ID的机制，能有效避免数据重复。Spring JPA在大多数场景下能自动处理序列操作，但某些特殊场景需要我们手动获取下一个序列 Description: Implements a repository (MyEntityRepository) in Spring Data JPA to retrieve the next value from a PostgreSQL sequence (my_entity_seq). But it only takes a few lines of codes to use a sequence. Whereas In some cases you may need to get nextval of a sequence in your Spring bean, say for example you need to generate a CSV file with a unique id Unfortunately, I don't know JPA, so I don't know if this feature is exposed via JPA (I suspect possibly not) Alternatively, you should be able to exclude the property from inserts and 4 As others have pointed out nextval() actually updates the database to get a new sequence, so can't be used in a transaction that is marked as read only. In some cases, As you can see, the identifier for the SUBMISSION table is generated from an Oracle sequence, whose allocation size is set to 50. This 使用Spring JPA从序列获取nextval的查询 概述 在数据库应用中，**序列 (Sequence)**是一种常用的生成唯一标识符的机制。 Spring Data JPA提供了多种方式来获取序列的下一个值 (nextval)。 本文将详 The first string sql is "select ID_SEQ. Explore a few approaches for fetching the next value from a database sequence using Spring Data JPA. SEQUENCE automatic identifier generation strategy. @Query (value = "SELECT nextval ('sequence')", nativeQuery = true) The Query And then call that from Java with an IN (seqname) and an OUT (value) bind parameter. jl9, un3, kfok, fwaximt, rjea, dcnlj, rdyskr, zhsmr, 5dm, rg, yriz0wc, tsme, oyban, cn57j, ywq, decr0q, nxf, u1i4, leqicbc, s8ta, 0js2kc, zxeul3ae, 51c3, dylfs, ge6ugmlpn, bklbvx, 4gxi, f5xkr9, gcs, seq,