As we Android developers know, the SQLiteDatabase execSQL
method can execute only one statement.
The doc says:
Execute a single SQL statement that is not a query. For example,
CREATE TABLE
,DELETE
,INSERT
, etc. Multiple statements separated by;
s are not supported.
I have to load in a batch of records, 1000 and counting.
How do I insert these efficiently?
And what's the easiest way to deliver these SQLs with your apk?
I mention, there is already a system database and I will run this on the onUpdate
event.
I have this code so far:
List<String[]> li = new ArrayList<String[]>();
li.add(new String[] {
"-1", "Stop", "0"
});
li.add(new String[] {
"0", "Start", "0"
});
/* the rest of the assign */
try {
for (String[] elem : li) {
getDb().execSQL(
"INSERT INTO " + TABLENAME + " (" + _ID + "," + NAME + "," + PARSE_ORDER
+ ") VALUES (?,?,?)", elem);
}
} catch (Exception e) {
e.printStackTrace();
}
Important Methods in SQLite DatabaseThis method will return the number of rows in the cursor. This method returns a Boolean value when our cursor is closed. This method returns the total number of columns present in our table. This method will return the name of the column when we passed the index of our column in it.
How do I insert these efficiently?
Use transaction:
db.beginTransaction();
try {
for(;;) {
db.execSQL(...);
}
db.setTransactionSuccessful();
} finally {
db.endTransaction();
}
I think what you have is the only way to load those 1000 records, now, as far as deploying that DB with your apk file, check out this post:
http://www.helloandroid.com/tutorials/how-have-default-database
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With