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.
吴越王王宫内的屏风上，写着“陌上花开，可缓缓归矣”这句话。据说钱镠在世时，每年春天，钱镠王妃必归临安娘家省亲，有一年春深，钱镠写信给妻子道：“陌上花开，可缓缓归矣。”
。新收录的资料对此有专业解读
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