SQL ค้นหาตำแหน่งใดๆและระบุหลัก

ตัวอย่างต้องการค้นหาเลข ‘18′ ตำแหน่งที่ ‘3′ เปรียบเทียบ ‘2′ หลัก

SELECT * FROM TableName WHERE MID(Field, 3, 2 ) = '18'
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