I'm trying to run some MySQL-compatible SQL that uses SIGN(...) , but TiDB doesn't recognize that function…

I'm trying to run some MySQL-compatible SQL that uses SIGN(...) , but TiDB doesn't recognize that function…: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). Problem Statement I'm trying to run some MySQL-compatible SQL that uses SIGN(...), but TiDB doesn't recognize that…

The task

Problem Statement I'm trying to run some MySQL-compatible SQL that uses SIGN(...), but TiDB doesn't recognize that function right now. Can you add support for SIGN() so I can get the sign of a numeric expression directly in queries? Expected outcomes SIGN(expr) can be used as a…

Part of XiaomiMiMo/MiMo-V2.6-RL-oss.