PostgreSQL错误：范围表条目过多？

Question

当我尝试使用20000 union执行大型SQL查询时，PostgreSQL退出并显示以下错误：“范围表条目过多”

您能帮我解决这个问题吗？

”从t_58815 AS p0，t_27700 AS p1，t_85383 AS p2，t_27700 AS p3，t_50436 AS p4，t_36552 AS p5那里选择p2.s AS att_X，p3.s AS att_Y p4.o = p1.o AND p2.s = p1.s AND p2.s = p0.s AND p3.s = p4.s AND p3.s = p5.s UNION ...“

Answer 1

此错误的唯一可能解决方案是在UNION查询中使用较少的表。