查询sqlserver数据库dbo库的每张表各自的数据条数
时间: 2024-03-11 16:50:28 浏览: 20
你可以使用以下 T-SQL 语句来查询 SQL Server 数据库 dbo 库中每张表的数据条数:
```
SELECT
t.NAME AS TableName,
p.rows AS RowCounts
FROM
sys.tables t
INNER JOIN
sys.partitions p ON t.object_id = p.OBJECT_ID
WHERE
t.schema_id = 1
AND t.is_ms_shipped = 0
AND p.index_id IN (0,1)
ORDER BY
RowCounts DESC;
```
这将返回一个结果集,其中包含每个表的名称和行数,按行数降序排列。
相关问题
获取SQL server数据库中所有表的数据 C++实现
要获取 SQL Server 数据库中所有表的数据,你可以使用 C++ 中的 ODBC API。下面是一个简单的示例代码,它会连接到一个 SQL Server 数据库,获取所有表的名称,然后针对每个表执行一个 SELECT 查询,以获取表中的所有数据。
```c++
#include <iostream>
#include <windows.h>
#include <sqlext.h>
#include <sqltypes.h>
#include <sql.h>
void showError(SQLHANDLE handle, SQLSMALLINT type) {
SQLCHAR SqlState[6], SQLStmt[100], Msg[SQL_MAX_MESSAGE_LENGTH];
SQLINTEGER NativeError;
SQLSMALLINT MsgLen;
SQLGetDiagRec(type, handle, 1, SqlState, &NativeError, Msg, sizeof(Msg), &MsgLen);
std::cerr << "SQL Error " << NativeError << " (" << SqlState << "): " << Msg << std::endl;
}
int main() {
SQLHENV env;
SQLHDBC dbc;
SQLHSTMT stmt;
SQLRETURN ret;
// Allocate an environment handle
SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &env);
SQLSetEnvAttr(env, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0);
// Allocate a connection handle
SQLAllocHandle(SQL_HANDLE_DBC, env, &dbc);
// Connect to the database
ret = SQLConnect(dbc, (SQLCHAR*)"MyDatabase", SQL_NTS, (SQLCHAR*)"MyUsername", SQL_NTS, (SQLCHAR*)"MyPassword", SQL_NTS);
if (ret != SQL_SUCCESS && ret != SQL_SUCCESS_WITH_INFO) {
showError(dbc, SQL_HANDLE_DBC);
return 1;
}
// Allocate a statement handle
SQLAllocHandle(SQL_HANDLE_STMT, dbc, &stmt);
// Get the list of tables in the database
ret = SQLTables(stmt, NULL, 0, NULL, 0, (SQLCHAR*)"dbo", SQL_NTS, (SQLCHAR*)"TABLE", SQL_NTS);
if (ret != SQL_SUCCESS && ret != SQL_SUCCESS_WITH_INFO) {
showError(stmt, SQL_HANDLE_STMT);
return 1;
}
// Fetch the results of the query
SQLCHAR tableName[256];
while (SQLFetch(stmt) == SQL_SUCCESS) {
SQLGetData(stmt, 3, SQL_C_CHAR, tableName, sizeof(tableName), NULL);
std::cout << "Table: " << tableName << std::endl;
// Execute a SELECT query on the table
SQLCHAR query[256];
sprintf_s((char*)query, sizeof(query), "SELECT * FROM %s", tableName);
ret = SQLExecDirect(stmt, query, SQL_NTS);
if (ret != SQL_SUCCESS && ret != SQL_SUCCESS_WITH_INFO) {
showError(stmt, SQL_HANDLE_STMT);
return 1;
}
// Fetch the results of the query
SQLCHAR columnValue[256];
SQLSMALLINT numColumns;
SQLNumResultCols(stmt, &numColumns);
while (SQLFetch(stmt) == SQL_SUCCESS) {
for (int i = 1; i <= numColumns; i++) {
SQLGetData(stmt, i, SQL_C_CHAR, columnValue, sizeof(columnValue), NULL);
std::cout << columnValue << " ";
}
std::cout << std::endl;
}
}
// Free the statement handle
SQLFreeHandle(SQL_HANDLE_STMT, stmt);
// Disconnect from the database
SQLDisconnect(dbc);
// Free the connection handle
SQLFreeHandle(SQL_HANDLE_DBC, dbc);
// Free the environment handle
SQLFreeHandle(SQL_HANDLE_ENV, env);
return 0;
}
```
注意:在此示例代码中,数据库名称为 "MyDatabase",用户名为 "MyUsername",密码为 "MyPassword"。你需要将这些值替换为你自己的数据库凭据。
如何查询Sql server数据库连接的权限
要查询 SQL Server 数据库连接的权限,可以使用以下步骤:
1. 连接到 SQL Server 数据库引擎,并在查询窗口中运行以下 Transact-SQL 命令:
```
SELECT
p.name AS '登录名',
sp.name AS '登录类型',
dp.name AS '数据库用户',
dp.type_desc AS '用户类型',
dp.default_schema_name AS '默认模式',
dp.create_date AS '创建时间',
dp.modify_date AS '修改时间',
dp.is_disabled AS '是否禁用'
FROM
sys.database_principals AS dp
JOIN sys.server_principals AS sp ON dp.sid = sp.sid
JOIN sys.server_role_members AS srm ON sp.principal_id = srm.member_principal_id
JOIN sys.server_principals AS p ON srm.role_principal_id = p.principal_id
WHERE
p.type_desc IN ('SQL_LOGIN', 'WINDOWS_LOGIN')
ORDER BY
p.name;
```
2. 运行查询后,将显示登录名、登录类型、数据库用户、用户类型、默认模式、创建时间、修改时间和是否禁用等信息。
3. 如果想查看特定用户的权限,可以使用以下命令:
```
EXEC sp_helprotect NULL, 'dbo', NULL, 'grant'
```
其中,第一个参数为对象名称,第二个参数为架构名称,第三个参数为用户名,第四个参数为权限类型。该命令将显示指定用户拥有的所有权限。