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Do I need elements in persistence.xml?
...hbm2ddl.auto" value="validate" />
<property name="hibernate.show_sql" value="true" />
</properties>
</persistence-unit>
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find vs find_by vs where
...ROM "kits" WHERE
("kits"."number" = '3456' AND "kits"."id" != 1) LIMIT 1 SQL (0.5ms)
UPDATE "kits" SET "job_id" = $1, "updated_at" = $2 WHERE "kits"."id" =
1 [["job_id", 2], ["updated_at", Tue, 12 May 2015 07:16:58 UTC +00:00]]
(0.6ms) COMMIT => true
but if you use where then you can ...
Can I bind an array to an IN() condition?
...in a table, and it is still not implemented yet - see this record in the MYSQL bug tracker. Thanks to @BillKarwin for the notice.
You can't use a string with comma inside as a value of the array for search. It is impossible to parse such string in the right way after implode since you use comma symb...
Accessing Google Spreadsheets with C# using Google Data API
...y);" Tried to edit not enough characters changed !
– SQLBobScot
May 7 '15 at 18:47
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Ruby on Rails: getting the max value from a DB column
Currently I can make the straight-up SQL query on my DB:
2 Answers
2
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Paging with Oracle
... productOfferId+" productOfferName: "+ productOfferName);
String sql = "SELECT * FROM ( SELECT * FROM product_offer po WHERE po.deleted=0 AND (po.product_offer_id=? OR po.product_offer_name LIKE ? )" +
" ORDER BY po.PRODUCT_OFFER_ID asc) foo OFFSET ? ROWS FETCH NEXT ? ROWS ONL...
What are the differences between a clustered and a non-clustered index?
...should be set on a field that is normally incremental ie Id or Timestamp.
SQL Server will normally only use an index if its selectivity is above 95%.
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Difference between rake db:migrate db:reset and db:schema:load
.../schema.rb.
db:structure:load - Recreates the database from the structure.sql file.
db:structure:dump - Dumps the current environment’s schema to db/structure.sql.
(You can specify another file with SCHEMA=db/my_structure.sql)
db:setup Runs db:create, db:schema:load and db:seed.
db:reset Runs...
Spring Boot JPA - configuring auto reconnect
...onfiguring the DataSource for you. In this case, and since you are using MySQL, you can add the following to your application.properties up to 1.3
spring.datasource.testOnBorrow=true
spring.datasource.validationQuery=SELECT 1
As djxak noted in the comment, 1.4+ defines specific namespaces for the...
A potentially dangerous Request.Form value was detected from the client
...ote character on the other hand is dangerous when interpolating strings in SQL queries, but perfectly safe if it is a part of a name submitted from a form or read from a database field.
The bottom line is: you can't filter random input for dangerous characters, because any character may be dangerous...