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.
OUTPUT clause, which lets you put whatever you inserted into another table also. I don't think MySQL has an equivalent. You might create a temporary table, select into that table, then populate courses from that table, then use the temp table for whatever else you needed.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