在mysql中将数据从一个数据库插入另一个数据库

Question

for a school project i have to insert data from a filled database into an empty database using a php script with sql, both databases are on the same server and both have the exact same structure, difference is that one is filled and the other is not.

i made a start:

// get data from filled database
$select = $filledDb->prepare("SELECT * FROM artiekelen_inhoud, artikelen, gebruikers, rollen");
$select->execute();

// insert data into empty database
$insert = $emptyDb->prepare("INSERT INTO ");

connection to db is already set up and that works fine.

i'm not entirely sure how i should do this, should i insert all the rows manually or is there someway to insert all data with one query or something?

thank you for reading!

Answer 1

You can use INSERT ... SELECT for this. In short you just do:

INSERT INTO dba.blanktable
 SELECT * FROM dbb.yourothertable;

This assume that both tables exist, target table is empty and both have somewhat similar column types.

Answer 2

您可以通过运行以下命令在一个查询中执行SELECT and the INSERT ：

INSERT INTO db1.table1 SELECT * FROM db2.table1;

Answer 3

INSERT INTO destination_database.destination_table
SELECT * 
FROM source_database.source_table

Answer 4

INSERT INTO NEWDB.TABLE_NAME SELECT * FROM SOURSE_DATABASE.TABLE_NAME;