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Your IP : 3.147.8.255
require('dotenv/config');
const config = require('./config');
let sql = require('mssql');
class Database {
static create(params) {
return new Database(params);
}
async getColumns(table) {
return this.select(`SELECT
c.name 'ColumnName',
t.Name 'DataType',
c.max_length 'MaxLength',
c.precision,
c.scale,
c.is_nullable,
C.is_identity 'IsIdentity',
ISNULL(i.is_primary_key, 0) 'PrimaryKey'
FROM
sys.columns c
INNER JOIN
sys.types t ON c.user_type_id = t.user_type_id
LEFT OUTER JOIN
sys.index_columns ic ON ic.object_id = c.object_id AND ic.column_id = c.column_id
LEFT OUTER JOIN
sys.indexes i ON ic.object_id = i.object_id AND ic.index_id = i.index_id
WHERE
c.object_id = OBJECT_ID('${table}')`);
}
async query(template, input = {}) {
let pool = new sql.ConnectionPool(config);
try {
await pool.connect();
let request = pool.request();
for (var name in input) {
if (input[name] instanceof Date) request.input(name, sql.DateTime2, input[name]);
else request.input(name, input[name]);
}
let result = await request.query(template);
return result;
} finally {
pool.close();
}
}
async select(template, input) {
return (await this.query(template, input)).recordset;
}
exec_sp(name, input, request) {
return new Promise((resolve, reject) => {
if (request) {
for (var i = 0; i < input.length; i++) {
request.input(input[i].name, input[i].type || sql.NVarChar, input[i].value);
}
request.execute(name, (err, result) => {
if (err) reject(err);
else resolve(result);
//this.close();
});
} else {
this.connect().then((request) => {
for (var i = 0; i < input.length; i++) {
request.input(input[i].name, input[i].type || sql.NVarChar, input[i].value);
}
request.execute(name, (err, result) => {
if (err) reject(err);
else resolve(result);
});
}).catch(err => reject(err));
}
})
}
}
module.exports = Database;