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To pull values into a table from one or more other tables, you can use a SELECT clause in the INSERT statement. The select clause can insert values into some or all of the columns in a row.
Inserting values for only some columns can be useful when you want to take some values from an existing table. Then, you can use the UPDATE statement to add the values for the other columns.
Before inserting values for some, but not all, of the columns in a table, make sure that either a default exists, or that you specify NULL for the columns into which you are not inserting values. Otherwise, an error appears.
When you insert rows from one table into another, the two tables must have compatible structures—that is, the matching columns must be either the same data types or data types between which SQL Anywhere automatically converts.
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