Insert Statements
An insert statement adds rows to a table. There are two syntactic forms this type of statement can take in RZSQL.
insert-stmt
In the first form, which is common to most SQL databases, you specify the column
names you'll be supplying data for, then give the data using a select statement.
This select statement is commonly a VALUES(...)
clause, when the data is
constant or is coming from the calling process via bind-parameters.
Example:
insert into Users
( Email
, Name
)
values ('[email protected]', 'user 1')
, ('[email protected]', 'user 2');
Sometimes it is useful to copy data between tables though, in which case using a real query is handy. Refer to select-stmt for further information.
The ROW
clause
When there are a more than a couple of columns involved, it can be hard to see
which datum in a VALUES(...)
clause corresponds to which column name in the
table.
To make this easier, RZSQL supports a special syntax for inserting a single row of data, in which the column names are paired with the values being inserted.
insert into Users
row
Email = '[email protected]',
Name = 'user 4';
This compiles to a VALUES(...)
clause.
You can experiment with the various insert statement types here.