Postgres uses returning to implement last_insert_id of mysql. Today, I am asked if postgres has inserted a value like mysql and returned the inserted value. This is yes and has higher scalability. Example: [S @ localhost ~] $ Psqlpsql (9.2.4)
MySQL returns the update value (RETURNING) and mysqlreturningIn SQL writing, such as updating a row of records, you must obtain the updated row. From the perspective of the program itself, there is no difficulty, it is a big deal to cache this line,
In SQL writing, such as updating a row of records, you must obtain the updated row. From the perspective of the program itself, there is no difficulty, it is a big deal to cache this line, and direct access is completed. But from the perspective of
In write SQL, there are often such things as updating a row of records, and then getting the updated line. itself from the program, no difficulty, the big deal to cache this line, finished direct access. But from the database point of view, how can
In write SQL, there are often such things as updating a row of records, and then getting the updated line. itself from the program, no difficulty, the big deal to cache this line, finished direct access. But from the database point of view, how can
Method of returning the self-increment ID after MySQL inserts dataOne of the big differences between MySQL and Oracle insertion is that the Oracle support sequence does id,mysql itself with a column that can do self-growing fields, how can mysql get
When the phone field is set to unique in mysql, insert an SQL statement with the same phone number as if a record is successfully inserted, instead of returning an insert error! What should I do? {code...} mysql sets the phone field to unique and
Mysql auto-increment id 0 method bitsCN.com
Method for returning mysql auto-increment id to 0
Recently, it has always been a headache to initialize data for the current project, and the auto-increment of database IDs is getting bigger and
In SQL writing, such as updating a row of records, you must obtain the updated row. From the perspective of the program itself, there is no difficulty, it is a big deal to cache this line, and direct access is completed. However, from the
Python's MySQLdb module is a python-connected MySQL module, and the default query results are returned as a tuple type, which can only be accessed through 0,1. Index Access dataDefault Connection database: MySQLdb.connect (Host=host, User=user,
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