62 lines
2.9 KiB
C++
62 lines
2.9 KiB
C++
#include "parser.h"
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#include "usql.h"
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// https://dev.to/joaoh82/what-would-sqlite-look-like-if-written-in-rust-part-1-2np4
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using namespace std::chrono;
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int main(int argc, char *argv[]) {
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std::vector<std::string> sql_commands{
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"create table a (i integer not null, s varchar(64), f float null)",
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"insert into a (i, s) values(1, upper('one'))",
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// "update table a set s = 'null string aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'",
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// "update table a set i = null",
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"insert into a (i, s) values(2, 'two')",
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"insert into a (i, s) values(3, 'two')",
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"insert into a (i, s) values(4, lower('FOUR'))",
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"insert into a (i, s) values(5, 'five')",
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"insert into a (i, s) values(to_date('20.12.1973', '%d.%m.%Y'), 'six')",
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"save table a into '/tmp/a.csv'",
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"select i, s from a where i > 2 order by 1 desc offset 1 limit 1",
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// "select i, s from a where i = 1",
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// "select i, s from a where s = 'two'",
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// "select i, s from a where i <= 3 and s = 'one'",
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// "select i, s from a where i > 0",
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"delete from a where i = 4",
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// "select i, s from a where i > 0",
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// "update a set f = 9.99 where i = 3",
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// "select i, s, f from a where i = 3",
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// "update a set s = 'three', f = f + 0.01 where i = 3",
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// "select i, s, f from a where i = 3",
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// "create table data (ticker varchar(8), price float null)",
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// "load data from '/Users/vaclavt/Library/Mobile Documents/com~apple~CloudDocs/Development/usql/data.csv')",
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// "select ticker, price from data",
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// "select i, s, f from a where i < 300",
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// "create table x as select i, s, f from a where i < 300",
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// "select i, s, f from x where i < 300",
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// "drop table x",
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// "select i, s, f from a where i > 300",
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// "select i, to_string(i, '%d.%m.%Y'), s, f from a where i > 300",
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"create table prices (datetime integer, symbol varchar(8), prev_close float, open float, price float, change float, change_prct varchar(16))",
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"load prices from '/Users/vaclavt/Library/Mobile Documents/com~apple~CloudDocs/Development/usql/prices.csv'",
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// "insert into prices (datetime, symbol, prev_close, open, price, change, change_prct) values (1626979443, 'MPC', 54.08, 53.82, 53.63, -0.832101, '-0.83 %')",
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"select to_string(datetime, '%d.%m.%Y %H:%M:%S'), symbol, prev_close, open, price, change, change_prct, datetime from prices where symbol = 'SYF' order by 8 desc limit 10"
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};
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usql::USql uSql{};
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for (auto command : sql_commands) {
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time_point<high_resolution_clock> start_time = high_resolution_clock::now();
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auto result = uSql.execute(command);
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time_point<high_resolution_clock> end_time = high_resolution_clock::now();
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std::cout << command << std::endl;
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std::cout << "run time: " << duration_cast<milliseconds>(end_time - start_time).count() << " ms " << std::endl <<std::endl;
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result->print();
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}
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return 0;
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}
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