@Repositorypublic interface BookRepository extends JpaRepository<Book, Long>{ List<Book> findByType(String type, Pageable request); @Transactional @Modifying @Query("update Book b set b.favCount = b.favCount + ?
Rails 里 string 类型,PG 映射成 varchar,MySQL 映射成 varchar(255),而 PG 的 varchar 其实是可以存储超过 255 的,Discourse 里一些使用 string 类型的数据会超过 255 ,转成 MySQL 以后会被截断,解决办法是对这部分列使用 text 类型。 🌟 keywords MySQL 和 PG 的 keywords 列表并不完全一致,比如 read 在...
() */ /* * untill we find nothing */ while (1) { status = OCIStmtFetch (stmhp, errhp, rows, OCI_FETCH_NEXT, OCI_DEFAULT); if (status == OCI_NO_DATA) { /* * indicates couldn't fetch anything */ break; } else { HANDLE_ERROR (errhp, status); } /* * print string */ ...
scope String?id_token String? // @db.Textsession_state String?user User @relation(fields: [userId], references: [id], onDelete: Cascade)@@unique([provider, providerAccountId])}model Session {id String @id @default(cuid())sessionToken String @uniqueuserId Stringexpires DateTimeuser User @r...
-- Find documents in which the key "company" has value "Magnafone" SELECT jdoc->'guid', jdoc->'name' FROM api WHERE jdoc @> '{"company": "Magnafone"}'; 1. 2. 备注:上面这个例子来自手册。 7附 Additional jsonb Operators 8 参考 ...
wordtext—thevalueofalexeme ndocinteger—numberofdocuments (tsvectors)thewordoccurredinnentryinteger— totalnumberofoccurrencesoftheword 例子 For example, to find the ten most frequent words in a document collection: SELECT*FROMts_stat('SELECT vector FROM apod')ORDERBYnentryDESC, ndocDESC, wordLIMIT...
Learn how to find slow queries in PostgreSQL using logs and metrics. Tutorial on how to check for and fix performance issues to speed up your database.
If you choose a remote connection type, the text box for entering a connection string becomes enabled. Type in the full connection string, including credentials, and database. When you connect to a remote PostgreSQL server with an earlier version of PostgreSQL, make sure that you don’t use ...
DETAIL: connection string is: host=127.0.0.1 user=repmgr dbname=repmgr DETAIL: current installation size is 31 MB INFO: "repmgr" extension is installed in database "repmgr" INFO: replication slot usage not requested; no replication slot will be set up for this standby ...
random_string.sh - prints a random alphanumeric string of a given length shields_embed_logo.sh - base64 encodes a given icon file or url and prints the logo=... url parameter you need to add the shields.io badge url shorten_text_selection.sh - shortens the selected text in the prior...