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select concat(
cast('W114' as char charset utf8mb4),left(cast(curtime() as char charset utf8mb4),5),cast('1' as char charset utf8mb4)
)
| concat( cast('W114' as char charset utf8mb4),left(cast(curtime() as char charset utf8mb4),5),cast('1' as char charset utf8mb4) ) |
|---|
| W11419:281 |