I have a table into which i will insert and it has 4 columns.
While inserting 3 columns will be same and the other one column will be different for each and it will be taken from another table.
How could i do that?
For exmaple;
INSERT INTO sendMsg (Type,Name,SenderName,Message) values(4, 'john','Mike','Hi, blabla')
i will insert same message also for Bob, instead of john.
and the names which i will send are contained in Names table.
Thank you.
Use a select statement to build up your insert. Something like this could work (as you didn't provide more details):
INSERT INTO sendMsg (Type,Name,SenderName,Message)
SELECT 4, "name" ,'Mike','Hi, blabla' FROM anothertable
-- WHERE ....
Column names are in ", so don't be confused. It's to ensure difference between string and database object.
Inside optinal WHERE you could do maybe something like
WHERE name in ('Bob', 'John', ...)
or whichever algorithm you need to determine the names.
Related
I have a table called books that I just altered to have a column called yearPUB. I'm trying to populate each row with a year but it's not working. This is the INSERT statement I'm using.
INSERT INTO books (yearPub)
VALUES (2002),
(2006),
(1999),
(2005),
(2003),
(2001),
(1998),
(1968),
(2009),
(1988),
Can someone tell me why it doesn't work?
You need to insert them one at a time, e.g.:
INSERT INTO books (yearPub) VALUES (2002);
INSERT INTO books (yearPub) VALUES (2006);
Alternatively, you could insert using a subquery with a select statement. The syntax may differ depending on what database you are using. For example, you could follow an example here and write something like:
INSERT INTO books (yearPub)
SELECT yearNumber FROM othertablename;
I have a local db that I'm trying to insert multiple rows of data, but I do not want duplicates. I do not have a second db that I'm trying to insert from. I have an sql file. The structure is this for the db I'm inserting into:
(db)artists
(table)names-> ID | ArtistName | ArtistURL | Modified
I am trying to do this insertion:
INSERT names (ArtistName, Modified)
VALUES (name1, date),
(name2, date2),
...
(name40, date40)
The question is, how can I insert data and avoid duplication by checking a specific column to this list of data that I want inserted using SQL?
Duplicate what? Duplicate name? Duplicate row? I'll assume no dup ArtistName.
Have UNIQUE(ArtistName) (or PRIMARY KEY) on the table.
Use INSERT IGNORE instead of IGNORE.
(No LEFT JOIN, etc)
I ended up following the advice of #Hart CO a little bit by inserting all my values into a completely new table. Then I used this SQL statement:
SELECT ArtistName
FROM testing_table
WHERE !EXISTS
(SELECT ArtistName FROM names WHERE
testing_table.ArtistName = testing_table.ArtistName)
This gave me all my artist names that were in my data and not in the name table.
I then exported to an sql file and adjusted the INSERT a little bit to insert into the names table with the corresponding data.
INSERT IGNORE INTO `names` (ArtistName) VALUES
*all my values from the exported data*
Where (ArtistName) could have any of the data returned. For example,
(ArtistName, ArtistUrl, Modified). As long as the values returned from the export has 3 values.
This is probably not the most efficient, but it worked for what I was trying to do.
First off, i should say up front that i am not a very strong SQL person, so please be gentle :)
I need to perform about 400 inserts into a particular table. The data that i will be using for these inserts, i can collect from a SELECT statement that runs off a different table. I only need the data from 1 column from this table.
So, im hoping someone can help me write the SQL that will basically take the list of id's that are returned from my select, and use that list to do a mass insert into another table.
In psuedocode, something like this:
Select BankID from BankTable; - this returns 300 rows
Insert Into AccountTable -- this will add all 300 rows into the 2nd table
Values
(BankID)
thanks in advance guys...
Very simple, you basically said it. :-)
INSERT Into AccountTable (BankId, SecondColumn) SELECT BankId,'XXX' as staticText FROM BankTable;
It can be done in one statement:
Insert Into AccountTable (bankid)
Select BankID from BankTable
This assumes that the column in AccountTable is also named bankid; if not, just set the name appropriately in the parenthesis.
Keep in mind your INSERT statement must include the columns if the select statement does not match your table definition precisely.
INSERT AccountTable (BankID)
SELECT BankID
FROM BankTable
For multiple columns simply include the column list:
INSERT AccountTable (BankID, BankName)
SELECT BankID, BankName
FROM BankTable
You can also run into type conversion issues if the data types of the columns don't match (i.e. integer fields won't take alpha characters, etc.), but it is not a necessity that the column names match. Just get the order of columns and types right and you should be good.
Hey ya'll I have this insert statement here
INSERT INTO persons VALUES (16,'First Name',NULL,NULL,NULL,2,0,now(),NULL,NULL);
it says that the number of columns do not match because the last column is for the id which is auto incremented. do I have to put in an id value?
Thanks,
J
You should not include an Auto-increment column in your insert.
It is also best practice to put the column names after the table name. This helps to make the query cleaner and easier to read & maintain.
INSERT INTO persons(Column1, col2, ...)
VALUES (16, 'First Name', ...)
Just don't include that field
INSERT INTO persons VALUES (16,'First Name',NULL,NULL,NULL,2,0,now(),NULL);
Is there a way i can do multiple inserts into one table using a condition?
i have a list of subscribers in tbl_subscribers. i have an update on productX so i would like everyone who is subscribes to productX to get a notification. The user_notification table is id PK, user_id, notification_id. The two values i need is product_id (productX) which allows me to find a list of subscribers in tbl_subscribers and the notification_id to insert into the user_notification table.
How can i do this insert using one query? I see you can do a select statement in sqlite http://www.sqlite.org/lang_insert.html but i cannot wrap my head around how i may do this nor seen an example.
I believe you're looking from INSERT SELECT as outlined here:
http://www.1keydata.com/sql/sqlinsert.html
The second type of INSERT INTO allows
us to insert multiple rows into a
table. Unlike the previous example,
where we insert a single row by
specifying its values for all columns,
we now use a SELECT statement to
specify the data that we want to
insert into the table. If you are
thinking whether this means that you
are using information from another
table, you are correct. The syntax is
as follows:
INSERT INTO "table1" ("column1", "column2", ...)
SELECT "column3", "column4", ... FROM "table2"
insert into user_notification(user_id, notification_id)
select s.user_id, #notification_id
from tbl_subscriber s
where s.product_id = #productX