MySQL query to insert 300 rows at once
I have a table called rent on MySQL
id, int (5), autoincrement PRIMARY KEY
dNo, int (5)
pRent, varchar (5)
status, varchar (10)
开发者_Python百科
I need to insert 300 rows into this table
id and dNo need to match
so in the end we will have id/dNo up until 300. How can this be done?
pRent will have a default value of 0
status will have a default value of vacant
What SQL query should I use to insert all 300 rows in at once with id/dNo autoincrement up to 300?
Assuming the id is set to auto increment
you can just insert the lot then do an update table set dNo=id
I'm not sure if you can set dNo=id
during insert as the id would be NULL
You might be able to set the dNo
default value to id
Edit:
INSERT INTO `test` (`id`, `id2`) VALUES ('2', `id`)
Works fine, but not if I set id=NULL
.
Looks like you'll have to user triggers
CREATE TRIGGER set_nDo AFTER INSERT ON test FOR EACH ROW SET `nDo`=`id`
i found a great way to insert 1000
INSERT INTO
myTable
(
nr
)
SELECT
SEQ.SeqValue
FROM
(
SELECT
(HUNDREDS.SeqValue + TENS.SeqValue + ONES.SeqValue) SeqValue
FROM
(
SELECT 0 SeqValue
UNION ALL
SELECT 1 SeqValue
UNION ALL
SELECT 2 SeqValue
UNION ALL
SELECT 3 SeqValue
UNION ALL
SELECT 4 SeqValue
UNION ALL
SELECT 5 SeqValue
UNION ALL
SELECT 6 SeqValue
UNION ALL
SELECT 7 SeqValue
UNION ALL
SELECT 8 SeqValue
UNION ALL
SELECT 9 SeqValue
) ONES
CROSS JOIN
(
SELECT 0 SeqValue
UNION ALL
SELECT 10 SeqValue
UNION ALL
SELECT 20 SeqValue
UNION ALL
SELECT 30 SeqValue
UNION ALL
SELECT 40 SeqValue
UNION ALL
SELECT 50 SeqValue
UNION ALL
SELECT 60 SeqValue
UNION ALL
SELECT 70 SeqValue
UNION ALL
SELECT 80 SeqValue
UNION ALL
SELECT 90 SeqValue
) TENS
CROSS JOIN
(
SELECT 0 SeqValue
UNION ALL
SELECT 100 SeqValue
UNION ALL
SELECT 200 SeqValue
UNION ALL
SELECT 300 SeqValue
UNION ALL
SELECT 400 SeqValue
UNION ALL
SELECT 500 SeqValue
UNION ALL
SELECT 600 SeqValue
UNION ALL
SELECT 700 SeqValue
UNION ALL
SELECT 800 SeqValue
UNION ALL
SELECT 900 SeqValue
) HUNDREDS
) SEQ
Good point "JV". But he can also set a default value, and the do an UPDATE after, so he can use the auto-increment value at "id".
300 records is not a lot, but depending on the format you have the data in you can possibly use LOAD DATA
you can put your data into a CSV file and then import it into MySQL using MySQL Workbench. I think that would be a great way to go about!
Steps:
- create an empty table with the columns you want to have
- Under Navigator Column on the left hand side of the MySQL Workbench, go to Schemas
- Now, you'd be able to see the different datasets (tables) which you've created
- Right click on the particular dataset where you want your data to be filled
- Click on Table Import Wizard
- Put in the path of the .CSV file and you'd be good to go!
精彩评论