Robuta

https://www.ibm.com/docs/en/db2/12.1.x?topic=urm-concat-function-concatenates-varbinary-values-into-single-value
The CONCAT function concatenates up to twelve (12) VARBINARY values into a single value.
single valueconcatfunctionvarbinaryvalues
https://mail-archive.com/commits@doris.apache.org/msg614002.html
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