-540 THE DEFINITION OF TABLE table-name IS INCOMPLETE BECAUSE IT LACKS A PRIMARY INDEX OR A REQUIRED UNIQUE INDEX
Explanation
An attempt was made to use table table-name in a CREATE or ALTER
statement to define a foreign key or a clone table, or it was referenced in an SQL manipulative
statement. However, the current status of the table is incomplete, so it cannot be used as
specified. 
The definition of the table may be incomplete
because the table was defined with a PRIMARY KEY clause, a UNIQUE clause, a referential constraint,
or a ROWID column with the GENERATED BY DEFAULT attribute.
The definition of the table is
incomplete, and it cannot be used until a required index is defined for:
The definition of the table may be incomplete
because the table was defined with a PRIMARY KEY clause, a UNIQUE clause, a referential constraint,
or a ROWID column with the GENERATED BY DEFAULT attribute. The definition of the table is
incomplete, and it cannot be used until a required index is defined for: - the primary key (the primary index)
- a ROWID column
- for each set of columns in any UNIQUE clause (the required unique indexes).
- a foreign key of a temporal referential constraint
System action
The statement cannot be processed.
Programmer response
Define a primary index or a required unique index on the table before referencing it.
SQLSTATE
57001