GAUSS-01438：index operators must be binary SQLSTATE: 42P17
错误码
错误描述：index operators must be binary SQLSTATE: 42P17
错误原因：CREATE OPERATOR CLASS、ALTER OPERATOR FAMILY … ADD指定的OPERATOR不是二元操作符。
解决方法：CREATE OPERATOR CLASS、ALTER OPERATOR FAMILY … ADD指定的OPERATOR须得是二元操作符。
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