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Boolean operators allow terms to be combined through logic operators. HarvestChoice supports AND, "+", OR, NOT and "-" as Boolean operators (Note: Boolean operators must be ALL CAPS)

The OR operator is the default conjunction operator. This means that if there is no Boolean operator between two terms, the OR operator is used. The OR operator links two terms and finds a matching document if either of the terms exist in a document. Ex:

wheat AND soybeans

'+' and '-' characters are treated as "mandatory" and "prohibited" modifiers for the subsequent terms.

+wheat -soybeans

(Records must have "wheat" and cannot have "soybeans")

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