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Add clarification of ddl-auto and schema.sql

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Dave Syer 2014-06-12 06:48:38 +01:00
parent 3971d26d81
commit c0efd3a22e
1 changed files with 7 additions and 1 deletions
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8
spring-boot-docs/src/main/asciidoc/howto.adoc
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@ -1174,7 +1174,6 @@ not something you want to be on the classpath in production. It is a Hibernate f
(nothing to do with Spring).
[[howto-intialize-a-database-using-spring-jdbc]]
=== Initialize a database using Spring JDBC
Spring JDBC has a `DataSource` initializer feature. Spring Boot enables it by default and
@ -1194,6 +1193,13 @@ useful once an application has matured and been deployed a few times, since the
can act as ``poor man's migrations'' -- inserts that fail mean that the data is already
there, so there would be no need to prevent the application from running, for instance.
If you want to use the `schema.sql` initialization in a JPA app (with
Hibernate) then `ddl-auto=create-drop` will lead to errors if
Hibernate tries to create the same tables. To avoid those errors set
`ddl-auto` explicitly to "" (preferable) or "none". Whether or not you use
`ddl-auto=create-drop` you can always use `data.sql` to initialize new
data.
[[howto-initialize-a-spring-batch-database]]