lj 和 ljf 有什么区别？
What is the difference between lj and ljf?
lj和ljf有什么区别？
看着 https://code.kx.com/q/ref/lj/ 我没有 ljf 被提及。
lj 行为在 kdb 3.0 版本中已更改。 ljf 函数支持旧行为。来自 TimeStored:
The joins in 3.x for uj/ij and lj all changed how they treat nulls from the keyed table. In particular nulls now by default overwrite existing values. In the past nulls from the joining table did not overwrite and left the original value in the column
有关更多详细信息和示例，请访问 TimeStored。
lj和ljf有什么区别？
看着 https://code.kx.com/q/ref/lj/ 我没有 ljf 被提及。
lj 行为在 kdb 3.0 版本中已更改。 ljf 函数支持旧行为。来自 TimeStored:
The joins in 3.x for uj/ij and lj all changed how they treat nulls from the keyed table. In particular nulls now by default overwrite existing values. In the past nulls from the joining table did not overwrite and left the original value in the column
有关更多详细信息和示例，请访问 TimeStored。