insert

问题 Is there a more-efficent, less laborious way of copying all records from one table to another that doing this: INSERT INTO product_backup SELECT * FROM product Typically, the product table will hold around 50,000 records. Both tables are identical in structure and have 31 columns in them. I'd like to point out this is not my database design, I have inherited a legacy system. 回答1: There's just one thing you're missing. Especially, if you're using InnoDB, is you want to explicitly add an ORDER

问题 Is there a more-efficent, less laborious way of copying all records from one table to another that doing this: INSERT INTO product_backup SELECT * FROM product Typically, the product table will hold around 50,000 records. Both tables are identical in structure and have 31 columns in them. I'd like to point out this is not my database design, I have inherited a legacy system. 回答1: There's just one thing you're missing. Especially, if you're using InnoDB, is you want to explicitly add an ORDER

问题 I have ~100,000 to 1,000,000 rows to insert into an Oracle18c database. I'm quite new with Oracle and this order of magnitude of data. I reckon there must be some optimal way to do it, but for now I've only managed to implement a line by line insertion: def insertLines(connection, tableName, column_names, rows): cursor = connection.cursor() if tableExists(connection, tableName): for row in rows: sql = 'INSERT INTO {} ({}) VALUES ({})'.format(tableName, column_names, row) cursor.execute(sql)

问题 I have ~100,000 to 1,000,000 rows to insert into an Oracle18c database. I'm quite new with Oracle and this order of magnitude of data. I reckon there must be some optimal way to do it, but for now I've only managed to implement a line by line insertion: def insertLines(connection, tableName, column_names, rows): cursor = connection.cursor() if tableExists(connection, tableName): for row in rows: sql = 'INSERT INTO {} ({}) VALUES ({})'.format(tableName, column_names, row) cursor.execute(sql)

问题 I have already post this question but now in details. I have trying to insert Date from Vb.net to SQL Database But when i click insert Button then show me above error message.I need your help Thanks. I have been trying for a long time to insert the data in many ways, but have been consistently failing. 'Sql Database table data type is below. ';;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Userid int Checked EmpSalary int Checked EmpName varchar(50)

问题 I have already post this question but now in details. I have trying to insert Date from Vb.net to SQL Database But when i click insert Button then show me above error message.I need your help Thanks. I have been trying for a long time to insert the data in many ways, but have been consistently failing. 'Sql Database table data type is below. ';;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Userid int Checked EmpSalary int Checked EmpName varchar(50)

问题 I am following MongoDB Atlas Blog tutorial to add info into mongodb but I am getting the above mentioned error. I have tried to resolve this error, even tried to then but still getting the same issue... Following is my connection file async function main(){ /** * Connection URI. Update <username>, <password>, and <your-cluster-url> to reflect your cluster. * See https://docs.mongodb.com/ecosystem/drivers/node/ for more details */ const uri = "mongodb+srv://an:abc@abc-2yzxs.mongodb.net/test

问题 hey for some reason my linked list is printing in the reversed ordear for example if my input is 2->4->6 my output is 6->4->2 list* add_int_list(list* a,int b) { list *temp; temp = (list*)malloc(sizeof(list*)); temp->next = NULL; if (a->next == NULL)//insert to the first node { temp->data = b; temp->next = a; a = temp; } else { temp->data = b; temp->next = a; a = temp;//I think the problem is here, couldnt find how to fix } 回答1: For starters in this statement temp = (list*)malloc(sizeof(list*

问题 hey for some reason my linked list is printing in the reversed ordear for example if my input is 2->4->6 my output is 6->4->2 list* add_int_list(list* a,int b) { list *temp; temp = (list*)malloc(sizeof(list*)); temp->next = NULL; if (a->next == NULL)//insert to the first node { temp->data = b; temp->next = a; a = temp; } else { temp->data = b; temp->next = a; a = temp;//I think the problem is here, couldnt find how to fix } 回答1: For starters in this statement temp = (list*)malloc(sizeof(list*

问题 for a school assingment i have to make a portfolio. this has to contain a working login and registration system. I got it where it will log people in but only if i manually input data in a database. but now when i try to let people register them self it just keeps giving me the error that the username and email allready exists, what is not true in most cases. i hope u guys can help me with this. here is the code: <?php include_once 'db_connect.php'; include_once 'psl-config.php'; $error_msg =