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增加GROUP BY\HAVING支持

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2025-03-17 22:02:27 +08:00
parent d8d5db4ff0
commit 64d7c74aa5
3 changed files with 43 additions and 6 deletions
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12
include/db/sqler.h
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@@ -65,6 +65,14 @@ namespace ylib
/// </summary>
select& orderby(const std::string& expression);
/// <summary>
/// 分组查询
/// </summary>
select& groupby(const std::string& expression);
/// <summary>
/// 过滤
/// </summary>
select& having(const std::string& expression);
/// <summary>
/// 查询数量
/// </summary>
/// <returns></returns>
@@ -90,7 +98,7 @@ namespace ylib
/// <param name="where"></param>
/// <param name="orderby"></param>
/// <param name="limit"></param>
void make_sql(std::string& field_name, std::string& where, std::string& orderby, std::string& limit, std::vector<std::any>& insert_values);
void make_sql(std::string& field_name, std::string& where,std::string& groupby,std::string& having,std::string& orderby, std::string& limit, std::vector<std::any>& insert_values);
public:
mysql::conn* m_conn = nullptr;
private:
@@ -99,6 +107,8 @@ namespace ylib
std::vector<std::string> m_fields;
ylib::limit m_limit;
std::string m_orderby;
std::string m_groupby;
std::string m_having;
};
/// <summary>

36
src/db/sqler.cpp
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@@ -188,6 +188,18 @@ ylib::select& ylib::select::orderby(const std::string& expression)
m_orderby = expression;
return *this;
}
select& ylib::select::groupby(const std::string& expression)
{
// TODO: 在此处插入 return 语句
m_groupby = expression;
return *this;
}
select& ylib::select::having(const std::string& expression)
{
// TODO: 在此处插入 return 语句
m_having = expression;
return *this;
}
uint64 ylib::select::count()
{
if (m_table_name.empty())
@@ -196,12 +208,14 @@ uint64 ylib::select::count()
std::string field_name;
std::string where;
std::string orderby;
std::string groupby;
std::string having;
std::string limit;
std::vector<std::any> insert_values;
make_sql(field_name, where, orderby, limit, insert_values);
make_sql(field_name, where,groupby,having,orderby, limit, insert_values);
std::string sql = "SELECT COUNT(1) FROM " + m_table_name + " " + where + " " + orderby + " " + limit;
std::string sql = "SELECT COUNT(1) FROM " + m_table_name + " " + where + " " +groupby+" "+having+" " + orderby + " " + limit;
auto ppst = m_conn->setsql(sql);
for (size_t i = 0; i < insert_values.size(); i++)
setInsetValue(ppst, i + 1, insert_values[i]);
@@ -219,12 +233,14 @@ ylib::mysql::result* ylib::select::query()
std::string field_name;
std::string where;
std::string orderby;
std::string groupby;
std::string having;
std::string limit;
std::vector<std::any> insert_values;
make_sql(field_name,where, orderby,limit,insert_values);
make_sql(field_name, where, groupby, having, orderby, limit, insert_values);
std::string sql = "SELECT "+field_name+" FROM "+m_table_name+" " + where + " " + orderby + " " + limit;
std::string sql = "SELECT "+field_name+" FROM "+m_table_name+" " + where + " " + groupby + " " + having + " " + orderby + " " + limit;
auto ppst = m_conn->setsql(sql);
for (size_t i = 0; i < insert_values.size(); i++)
setInsetValue(ppst, i + 1, insert_values[i]);
@@ -235,11 +251,13 @@ void ylib::select::clear()
m_wheres.clear();
m_table_name = "";
m_fields.clear();
m_groupby = "";
m_having = "";
m_limit.count = -1;
m_limit.start = -1;
m_orderby = "";
}
void ylib::select::make_sql(std::string& field_name, std::string& where, std::string& orderby, std::string& limit, std::vector<std::any>& insert_values)
void ylib::select::make_sql(std::string& field_name, std::string& where, std::string& groupby, std::string& having, std::string& orderby, std::string& limit, std::vector<std::any>& insert_values)
{
if (m_fields.size() == 0)
field_name = "*";
@@ -281,6 +299,14 @@ void ylib::select::make_sql(std::string& field_name, std::string& where, std::st
{
orderby = " ORDER BY " + m_orderby;
}
if (m_groupby.empty() == false)
{
groupby = " GROUP BY " + m_groupby;
}
if (m_having.empty() == false)
{
having = " HAVING " + m_having;
}
}
ylib::update::update(mysql::conn* conn):m_conn(conn)

1
src/util/codec.cpp
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@@ -27,6 +27,7 @@ If you have any questions, please contact us: 1585346868@qq.com Or visit our web
#include <openssl/evp.h>
#include <openssl/sha.h>
#include <openssl/hmac.h>
#include <openssl/aes.h>
#endif
#ifdef _WIN32
#include <windows.h>