1 | #pragma once |
---|---|
2 | |
3 | #include <Parsers/IAST.h> |
4 | #include <Parsers/ASTQueryWithTableAndOutput.h> |
5 | #include <Parsers/ASTQueryWithOnCluster.h> |
6 | |
7 | namespace DB |
8 | { |
9 | |
10 | |
11 | /** OPTIMIZE query |
12 | */ |
13 | class ASTOptimizeQuery : public ASTQueryWithTableAndOutput, public ASTQueryWithOnCluster |
14 | { |
15 | public: |
16 | /// The partition to optimize can be specified. |
17 | ASTPtr partition; |
18 | /// A flag can be specified - perform optimization "to the end" instead of one step. |
19 | bool final; |
20 | /// Do deduplicate (default: false) |
21 | bool deduplicate; |
22 | |
23 | /** Get the text that identifies this element. */ |
24 | String getID(char delim) const override |
25 | { |
26 | return "OptimizeQuery"+ (delim + database) + delim + table + (final ? "_final": "") + (deduplicate ? "_deduplicate": ""); |
27 | } |
28 | |
29 | ASTPtr clone() const override |
30 | { |
31 | auto res = std::make_shared<ASTOptimizeQuery>(*this); |
32 | res->children.clear(); |
33 | |
34 | if (partition) |
35 | { |
36 | res->partition = partition->clone(); |
37 | res->children.push_back(res->partition); |
38 | } |
39 | |
40 | return res; |
41 | } |
42 | |
43 | void formatQueryImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override; |
44 | |
45 | ASTPtr getRewrittenASTWithoutOnCluster(const std::string &new_database) const override |
46 | { |
47 | return removeOnCluster<ASTOptimizeQuery>(clone(), new_database); |
48 | } |
49 | }; |
50 | |
51 | } |
52 |