MySQL> alter table t1 add i int; Query OK, 0 rows affected (0.41 sec) Records: 0 Duplicates: 0 Warnings: 0 #然后再次执行sp,就会发现这次执行了这句SQL的prepare再进行execute。 MySQL> call p1; Query OK, 0 rows affected (34.24 sec)
#接着我们执行表结构的更新。 MySQL> alter table t1 add i int; Query OK, 0 rows affected (0.41 sec) Records: 0 Duplicates: 0 Warnings: 0#然后再次执行sp,就会发现这次执行了这句SQL的prepare再进行execute。 MySQL> call p1; Query OK, 0 rows affected (34.24 sec)...
MySQL>altertablet1 add iint;Query OK,0rows affected(0.41sec)Records:0Duplicates:0Warnings:0#然后再次执行sp,就会发现这次执行了这句SQL的prepare再进行execute。 MySQL>call p1;Query OK,0rows affected(34.24sec) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 1...
mysql> create table A (id int, name varchar(20)); Query OK, 0 rows affected (0.02 sec) mysql> insert into A values (1, "张三疯"), (2, "夏洛特"), (3, "熊大"), (4, "刻晴"), (5, "急先锋"); Query OK, 5 rows affected (0.01 sec) Records: 5 Duplicates: 0 Warnings: 0...
1 select_type: SIMPLE table:b type: ref possible_keys: indcompanyid key: ind_companyid keylen: 5 ref sakila.a.company_id rows: 1 Extra: Using where;Using index 2 rows in set (0.00 sec) 每个列的解释如下: select_type:表示 的类型,常见的取值有(简单表,即不使用连接...
After pt-table-checksum finishes checksumming all of the chunks in a table, it pauses and waits for all detected replicas to finish executing the checksum queries. Once that is finished, it checks all of the replicas to see if they have the same data as the master, and then prints a li...
T-SQL GETDATE() ? ADD and SUBTRACT depending on the condition is CASE STATEMENT ADD COLUMN to variable table? Add prefix in data column Add Time in SQL HH:MM:SS to another HH:MM:SS Adding a column to a large (100 million rows) table with default constraint adding a extra column in...
I have a spreadsheet. Each Tab (in month order) Starting July, August, September and so on. In Column A a store number will be entered. This store number cannot be duplicated across any of the other tabs/months. What formula can I use to check for any ...
MySQL> call p1; #这里第二次操作,直接执行update这句SQL的execute。 Query OK, 0 rows affected (13.78 sec) #接着我们执行表结构的更新。 MySQL> alter table t1 add i int; Query OK, 0 rows affected (0.41 sec) Records: 0 Duplicates: 0 Warnings: 0 ...
What to doCheck for duplicate field names and change the duplicates to distinct field names. Top of Page ACCWeb103079 Error textType mismatch in expression. What it meansThe types on either side of the join are incompatible or the field types compared are incompatible types. For example,...