docs/sql-error-conditions-incomplete-type-definition-error-class.md

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title: INCOMPLETE_TYPE_DEFINITION error class
displayTitle: INCOMPLETE_TYPE_DEFINITION error class
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[SQLSTATE: 42K01](sql-error-conditions-sqlstates.html#class-42-syntax-error-or-access-rule-violation)

Incomplete complex type:

This error class has the following derived error classes:

## ARRAY

The definition of "ARRAY" type is incomplete. You must provide an element type. For example: "ARRAY`<elementType>`".

## MAP

The definition of "MAP" type is incomplete. You must provide a key type and a value type. For example: "MAP<TIMESTAMP, INT>".

## STRUCT

The definition of "STRUCT" type is incomplete. You must provide at least one field type. For example: "STRUCT<name STRING, phone DECIMAL(10, 0)>".