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expression: enable SHA2 function pushdown to TiKV #67088

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Merged
ti-chi-bot merged 2 commits into from
Mar 18, 2026
Merged

expression: enable SHA2 function pushdown to TiKV #67088

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4739431
expression: enable SHA2 function pushdown to TiKV
joechenrh Mar 17, 2026
5feb1e7
expression: use WHERE predicate to verify SHA2 TiKV pushdown
joechenrh Mar 18, 2026
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2 changes: 1 addition & 1 deletion pkg/expression/infer_pushdown.go
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Expand Up @@ -241,7 +241,7 @@ func scalarExprSupportedByTiKV(ctx EvalContext, sf *ScalarFunction) bool {
ast.Sysdate, /* ast.StrToDate, */

// encryption functions.
ast.MD5, ast.SHA1, ast.UncompressedLength,
ast.MD5, ast.SHA1, ast.SHA2, ast.UncompressedLength,
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ast.Cast,

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5 changes: 5 additions & 0 deletions tests/integrationtest/r/planner/core/casetest/pushdown/push_down.result
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Expand Up @@ -123,6 +123,11 @@ id task access object operator info
Projection root md5(planner__core__casetest__pushdown__push_down.t.s)->Column
└─TableReader root data:TableFullScan
└─TableFullScan cop[tikv] table:t keep order:false, stats:pseudo
explain format = 'plan_tree' select * from t where sha2(s, 256) = 'abc';
id task access object operator info
TableReader root data:Selection
└─Selection cop[tikv] eq(sha2(planner__core__casetest__pushdown__push_down.t.s, 256), "abc")
└─TableFullScan cop[tikv] table:t keep order:false, stats:pseudo
explain format = 'plan_tree' select c from t where a+1=3;
id task access object operator info
Projection root planner__core__casetest__pushdown__push_down.t.c
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1 change: 1 addition & 0 deletions tests/integrationtest/t/planner/core/casetest/pushdown/push_down.test
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Expand Up @@ -35,6 +35,7 @@ explain format = 'plan_tree' select json_unquote(a) from t2;
explain format = 'plan_tree' select i * 2 from t;
explain format = 'plan_tree' select DATE_FORMAT(t, '%Y-%m-%d %H') as date from t;
explain format = 'plan_tree' select md5(s) from t;
explain format = 'plan_tree' select * from t where sha2(s, 256) = 'abc';
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explain format = 'plan_tree' select c from t where a+1=3;
explain format = 'plan_tree' select /*+ hash_agg()*/ count(b) from (select id + 1 as b from t)A;
explain format = 'plan_tree' select /*+ hash_agg()*/ count(*) from (select id + 1 as b from t)A;
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