You have an Azure subscription that contains a Microsoft Purview account. You need to search the Microsoft Purview Data Catalog to identify assets that have an assetType property of Table or View…

The IN operator with parentheses and quoted string literals follows SQL syntax, which is not the query language supported by the Microsoft Purview Data Catalog search interface.

Purview Data Catalog search uses Lucene-inspired field-filter syntax in which a property filter is written as field:value. To match assets where assetType is either Table or View, you specify each value as its own clause and combine them with the OR operator, yielding assetType:Table OR assetType:view as the correct, supported query format.

The equals-sign assignment operator combined with grouped OR (assetType = (Table OR View)) is not valid Purview search query syntax and will not be parsed or evaluated correctly.

The grouped multi-value shorthand assetType:(Table OR View) uses a Lucene parentheses grouping pattern that Purview Data Catalog search does not support; each value must appear as a separate explicit field:value clause.