go-gorm

来源： https://stackoverflow.com/questions/60001452/multiple-one-to-many-relations-in-gorm

来源： https://stackoverflow.com/questions/60001452/multiple-one-to-many-relations-in-gorm

来源： https://stackoverflow.com/questions/60001452/multiple-one-to-many-relations-in-gorm

来源： https://stackoverflow.com/questions/60001452/multiple-one-to-many-relations-in-gorm

来源： https://stackoverflow.com/questions/36281394/golang-gorm-access-the-underlying-mysql-query

问题 I would like to know how I can use a subquery in FROM clause using gorm. It would look like the following: SELECT * FROM ( SELECT foo.* FROM foo WHERE bar = "baz" ) AS t1 WHERE t1.id = 1; I have built the subquery using golang: db.Model(Foo{}).Where("bar = ?", "baz") But how can I use this as a subquery in FROM ? If there is a method that turns a gorm query into a SQL string, then I can simply plug that string into a raw SQL. But there does not seem to be such method. Any suggestions? 回答1:

问题 I would like to know how I can use a subquery in FROM clause using gorm. It would look like the following: SELECT * FROM ( SELECT foo.* FROM foo WHERE bar = "baz" ) AS t1 WHERE t1.id = 1; I have built the subquery using golang: db.Model(Foo{}).Where("bar = ?", "baz") But how can I use this as a subquery in FROM ? If there is a method that turns a gorm query into a SQL string, then I can simply plug that string into a raw SQL. But there does not seem to be such method. Any suggestions? 回答1:

问题 I would like to know how I can use a subquery in FROM clause using gorm. It would look like the following: SELECT * FROM ( SELECT foo.* FROM foo WHERE bar = "baz" ) AS t1 WHERE t1.id = 1; I have built the subquery using golang: db.Model(Foo{}).Where("bar = ?", "baz") But how can I use this as a subquery in FROM ? If there is a method that turns a gorm query into a SQL string, then I can simply plug that string into a raw SQL. But there does not seem to be such method. Any suggestions? 回答1:

问题 I have created a struct to store spatial types and I have created a scan function to help query rows in my database. I am having issues inserting this type. I can insert data using the following sql; INSERT INTO 'table' ('spot') VALUES (GeomFromText('POINT(10 10)')); If I use Value interface in database/sql/driver ; type Value interface{} Value is a value that drivers must be able to handle. It is either nil or an instance of one of these types: int64 float64 bool []byte string [*] everywhere

问题 I have created a struct to store spatial types and I have created a scan function to help query rows in my database. I am having issues inserting this type. I can insert data using the following sql; INSERT INTO 'table' ('spot') VALUES (GeomFromText('POINT(10 10)')); If I use Value interface in database/sql/driver ; type Value interface{} Value is a value that drivers must be able to handle. It is either nil or an instance of one of these types: int64 float64 bool []byte string [*] everywhere