Consider this simple query
Query
INSERT INTO NewCourses (name, location, gid) from
SELECT name, location, 1
FROM courses
which does nothing but insert all records from table courses to table NewCourses .
But if I would like to return this same select statement what will I do?
Without this I need to run this insert statement then again run the same select statement like
INSERT INTO NewCourses (name, location, gid) from
SELECT name, location, 1
FROM courses
//THIS IS THE WASTE OF TIME
SELECT name, location, 1
FROM courses
Please let me know if it is possible?
Related
I have a query that inserts using a SELECT statement:
INSERT INTO courses (name, location, gid)
SELECT name, location, gid
FROM courses
WHERE cid = $cid
Is it possible to only select "name, location" for the insert, and set gid to something else in the query?
Yes, absolutely, but check your syntax.
INSERT INTO courses (name, location, gid)
SELECT name, location, 1
FROM courses
WHERE cid = 2
You can put a constant of the same type as gid in its place, not just 1, of course. And, I just made up the cid value.
Yes, it is. You can write :
INSERT INTO courses (name, location, gid)
SELECT name, location, 'whatever you want'
FROM courses
WHERE cid = $ci
or you can get values from another join of the select ...
Correct Syntax: select spelling was wrong
INSERT INTO courses (name, location, gid)
SELECT name, location, 'whatever you want'
FROM courses
WHERE cid = $ci
Sure, what do you want to use for the gid? a static value, PHP var, ...
A static value of 1234 could be like:
INSERT INTO courses (name, location, gid)
SELECT name, location, 1234
FROM courses
WHERE cid = $cid
Of course you can.
One thing should be noted however: The INSERT INTO SELECT statement copies data from one table and inserts it into another table AND requires that data types in source and target tables match. If data types from given table columns does not match (i.e. trying to insert VARCHAR into INT, or TINYINT intoINT) the MySQL server will throw an SQL Error (1366).
So be careful.
Here is the syntax of the command:
INSERT INTO table2 (column1, column2, column3)
SELECT column1, column2, column3 FROM table1
WHERE condition;
Side note: There is a way to circumvent different column types insertion problem by using casting in your SELECT, for example:
SELECT CAST('qwerty' AS CHAR CHARACTER SET utf8) COLLATE utf8_bin;
This conversion (CAST() is synonym of CONVERT() ) is very useful if your tables have different character sets on the same table column (which can potentially lead to data loss if not handled properly).
We all know this works.
INSERT INTO `TableName`(`col-1`,`col-2`)
SELECT `col-1`,`col-2`
===========================
Below method can be used in case of multiple "select" statements. Just for information.
INSERT INTO `TableName`(`col-1`,`col-2`)
select 1,2 union all
select 1,2 union all
select 1,2 ;
The right Syntax for your query is:
INSERT INTO courses (name, location, gid)
SELECT (name, location, gid)
FROM courses
WHERE cid = $cid
IF NOT EXISTS (SELECT 1 FROM Products WHERE name='Iphone1' AND manufacturer='appl') THEN
INSERT INTO Products(product_id, name, category, manufacturer)
VALUES (10000, 'IphoneZ', null, 'appl');
ERROR: syntax error at or near "IF" LINE 1: IF NOT EXISTS (SELECT 1
FROM Products WHERE name='Iphone1' A...
Can anyone help me understand what I am doing wrong?
MySQL only supports the IF statement in programming blocks -- stored procedures, functions, and triggers. Hence you cannot do what you want that way.
Instead, you can just write a single query:
INSERT INTO Products (product_id, name, category, manufacturer)
SELECT product_id, name, category, manufacturer
FROM (SELECT 10000 as product_id, 'IphoneZ' as name, null as category, 'appl' as manufacturer) t
WHERE NOT EXISTS (SELECT 1 FROM Products p WHERE p.name = t.name and p.manufacturer = t.manufacturer);
Actually, though, it is best to have the database directly enforce this sort of uniqueness. You can do so with a unique constraint/index:
CREATE UNIQUE INDEX unq_product_manufacturer_name ON product(manufacturer, name);
Then you can write an query to ignore errors by doing:
INSERT INTO Products (product_id, name, category, manufacturer)
VALUES (10000, 'IphoneZ', null, 'appl')
ON DUPLICATE KEY UPDATE category = VALUES(category);
The ON DUPLICATE KEY doesn't do anything -- it just serves to avoid returning an error if a duplicate value is inserted.
You are missing END IF keyword at the end of IF statement. And also, this SQL statement can be only used in a Routine block such as Stored Procedure or Stored Function.
Your SQL should be like this:
IF NOT EXISTS (SELECT 1 FROM Products WHERE name='Iphone1' AND manufacturer = 'appl') THEN
INSERT INTO Products(product_id, name, category, manufacturer)
VALUES (10000, 'IphoneZ', null, 'appl');
END IF;
Is it MySQL or SQL server?
I think you type wrongly : name='Iphone1' . It should be 'IphoneZ'.
You used single quotes in some places and double quotes in some places.
If it is mysql then try below query
INSERT INTO Products(product_id, name, category, manufacturer)
SELECT * FROM (select 10000,'IphoneZ', null, 'appl') AS tmp_table
WHERE NOT EXISTS (SELECT 1 FROM Products_arun WHERE name='IphoneZ'
AND manufacturer='appl') LIMIT 1;
If it is SQL server then try below query
IF NOT EXISTS (SELECT 1 FROM product WHERE name='IphoneZ' AND manufacturer='appl')
INSERT INTO product(product_id, name, category, manufacturer)
VALUES (10000, 'IphoneZ', null, 'appl');
INSERT INTO numbers (type, number)
VALUES 'telephone', SELECT DISTINCT tel FROM flat_data
I am attempting to select distinct numbers from one table and then insert them into another table.
However I need to manually set the type column that I am inserting into manually.
I can do it without the DISTINCT but I can't get my head around how to do it with!
INSERT INTO numbers (type, number)
SELECT DISTINCT 'telephone', tel
FROM flat_data
I have two variables
1. inserted_user_id,
2. inserted_address_id
in my MySQL procedure.
I need to use them in insert queries and select queries. Im trying something like
insert into user_new(name, company, email, customer_id) select name,
company, email, inserted_user_id from user_old;
insert into user_address_map(address_id, user_id) select
inserted_user_id,inserted_address_id ;
There two statements are not working. How to use procedure variable's value in the above sql statements?
First make a select to get all the info: (you need to declare these variables first)
SELECT name,
company,
email,
INTO varname, varcompany, varemail
FROM user_old
then use it into insert
INSERT INTO user_new
(name,
company,
email,
customer_id)
VALUES (varname,
varcompany,
varemail,
inserted_user_id);
edit:
First insert the Selected values and get the id of the inserted row
INSERT INTO user_new
(name,
company,
email)
SELECT name,
company,
email
FROM user_old
SET out_param = last_insert_id();
Then update this row with your param
UPDATE user_new
SET customer_id = inserted_user_id
WHERE id = out_param;
I have a query that inserts using a SELECT statement:
INSERT INTO courses (name, location, gid)
SELECT name, location, gid
FROM courses
WHERE cid = $cid
Is it possible to only select "name, location" for the insert, and set gid to something else in the query?
Yes, absolutely, but check your syntax.
INSERT INTO courses (name, location, gid)
SELECT name, location, 1
FROM courses
WHERE cid = 2
You can put a constant of the same type as gid in its place, not just 1, of course. And, I just made up the cid value.
Yes, it is. You can write :
INSERT INTO courses (name, location, gid)
SELECT name, location, 'whatever you want'
FROM courses
WHERE cid = $ci
or you can get values from another join of the select ...
Correct Syntax: select spelling was wrong
INSERT INTO courses (name, location, gid)
SELECT name, location, 'whatever you want'
FROM courses
WHERE cid = $ci
Sure, what do you want to use for the gid? a static value, PHP var, ...
A static value of 1234 could be like:
INSERT INTO courses (name, location, gid)
SELECT name, location, 1234
FROM courses
WHERE cid = $cid
Of course you can.
One thing should be noted however: The INSERT INTO SELECT statement copies data from one table and inserts it into another table AND requires that data types in source and target tables match. If data types from given table columns does not match (i.e. trying to insert VARCHAR into INT, or TINYINT intoINT) the MySQL server will throw an SQL Error (1366).
So be careful.
Here is the syntax of the command:
INSERT INTO table2 (column1, column2, column3)
SELECT column1, column2, column3 FROM table1
WHERE condition;
Side note: There is a way to circumvent different column types insertion problem by using casting in your SELECT, for example:
SELECT CAST('qwerty' AS CHAR CHARACTER SET utf8) COLLATE utf8_bin;
This conversion (CAST() is synonym of CONVERT() ) is very useful if your tables have different character sets on the same table column (which can potentially lead to data loss if not handled properly).
We all know this works.
INSERT INTO `TableName`(`col-1`,`col-2`)
SELECT `col-1`,`col-2`
===========================
Below method can be used in case of multiple "select" statements. Just for information.
INSERT INTO `TableName`(`col-1`,`col-2`)
select 1,2 union all
select 1,2 union all
select 1,2 ;
The right Syntax for your query is:
INSERT INTO courses (name, location, gid)
SELECT (name, location, gid)
FROM courses
WHERE cid = $cid