SQL Insert Statement is used to add rows to a table.
There are two ways:
The syntax to insert a row into a table:INSERT INTO table_name[(column_list)]
That SQL Insert will add a new row to the table and each column in the column list will get a value in the value_list.
Let's add a row to our Authors table:
The important things to remember when using the Sql Insert are:
When you have only partial information but you still want to add them to the table, then you need to specify those columns in the column_list. You can omit columns only when the columns you omitted allow null values. The syntax is the same as above, you just need to list the columns and put the corresponding values in the VALUES list.
You use Sql Select statement in an Sql INSERT statement in several situation, such as:
The syntax is:
Both column_list must have the same column order.
And you want to merge table Tbl_R into table Tbl_L. To do this use the following command:
This will insert all rows from Tbl_R into Tbl_L.
But, what if you only want to add rows from Tbl_R that have ID less than 6? Then add a WHERE clause.
That SQL Insert statement will add two rows from Tbl_R into Tbl_L.
Next, what if you noticed that row 2 in Tbl_L was incorrect. The value for Column B should be 55 instead of 50. Which command do you use? If you want to change existing rows, use Sql Update command that we'll discuss next. Let's do it.
Return from Sql insert statement to Data Manipulation
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