to measure latitude of the sun; it can, of course, be turned sideways
2026-02-27 00:00:00:03014251610http://paper.people.com.cn/rmrb/pc/content/202602/27/content_30142516.htmlhttp://paper.people.com.cn/rmrb/pad/content/202602/27/content_30142516.html11921 一版责编：杨 旭 赵 政 张宇杰 二版责编：殷新宇 张安宇 崔 斌 三版责编：韩晓明 姜 波 程是颉 四版责编：袁振喜 陈 震 余 璇
，这一点在chatGPT官网入口中也有详细论述
The iPKey check. One line in where.c. The reimplementation has is_ipk: true set correctly in its ColumnInfo struct but never checks it during query planning.
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