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Best way to get the ID of the last inserted row on SQLite

开发者 https://www.devze.com 2023-03-02 17:04 出处:网络
On iPhone, what\'s the best way to get the ID of the last inserted row on an SQLite Database using FMDB ?

On iPhone, what's the best way to get the ID of the last inserted row on an SQLite Database using FMDB ?

Is there a bette开发者_JS百科r way rather than doing :

SELECT MAX(ID)


If you can guarantee that your ID column is an auto-increment column, MAX(ID) is fine.

But to cover any case, there's a specialized SQLite function called LAST_INSERT_ROWID():

SELECT LAST_INSERT_ROWID();

In FMDB, you use the -lastInsertRowId method (which internally runs the above):

int lastId = [fmdb lastInsertRowId];


The function sqlite3_last_insert_rowid() is what you're looking for. Having just checked out the source code for FMDB, there seems to be a method on FMDatabase called -lastInsertRowId that wraps the function.


For swift 5 use this code

let lastRowId = sqlite3_last_insert_rowid(db)

for example

if sqlite3_exec(db, stringSql, nil, nil, nil) != SQLITE_OK {
    let errmsg = String(cString: sqlite3_errmsg(db)!)
    print("error Insert: \(errmsg)")
}

let lastRowId = sqlite3_last_insert_rowid(db);
print(lastRowId) // its gives you last insert id

if sqlite3_finalize(statement) != SQLITE_OK {
    let errmsg = String(cString: sqlite3_errmsg(db)!)
    print("error finalizing prepared statement: \(errmsg)")
}
statement = nil

//*** close data base
if sqlite3_close(db) != SQLITE_OK {
    print("error closing database")
}
db = nil


Try the following:

var rowid: Int = Int(contactDB.lastInsertRowId())
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