function: add expression conditional funtion decode_case
#41
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LGTM |
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Oct 11, 2021
… hash partitioned table` syntax (#41) * support alter table add partition partitions by hash syntax
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What problem does this PR solve?
parser PR pingcap/parser#1158
support
decode_casefunctionselect decode_case(1, 1, 0, 2, 'a', 'defult')same with the
case ... when ...What is changed and how it works?