sql server auto increment

operation. Insert into MERS (id, name) values (1, 'name1 '); -- Error: An explicit value for the identity column in table 'customer' can only be specified when a column list is used and IDENTITY_INSERT is ON. -- Step 3: Release auto-increment of primary key columns SET IDENTITY_INSERT customers ON; -- Step 4: insert two records with the primary keys 1 and 3. Inserted successfully Insert into ME

statements to get the result. The small parameter defines the auto-increment starting from the number.Copy codeThe Code is as follows:$ SQL = "call get_increment_id ('{$ key}', {$ small}, @ id )";$ Ret = $ db-> getData ("select @ id "); Another method is to use mysql auto_increment.Create a table with only one auto-

Table Name of a table; example: mysql> show index from employee; Delete An index mysql> alter table Name drop index name; example: mysql> alter table employee drop index emp_name; Modify TABLE: ADD a field: mysql> alter table table_name ADD field_name field_type; View the table: mysql> SELECT * FROM table_name; Modify the original field name and type: mysql> alter table table_name CHANGE old_field_name new_field_name field_type; Delete field: alter table table_name DROP field_name; The precedin

The following articles describe the content of Oracle Auto-increment fields. We all know that Oracle is different from ms SQL, and there is no relevant auto-increment column by default, however, we can create auto-incrementing fie

SQLite transaction and auto-increment deep analysis, and sqlite transaction deep analysis SQLite is nothing better, so we are afraid that "database is locked" will try our best to circumvent it over the years.Test code:Static void Test2 () {XCode. setting. current. transactionDebug = true; XTrace. writeLine (Role. meta. count + ""); XTrace. writeLine (Log. meta. count + ""); Console. clear (); Task. run ()

table 'customer' can only be specified when a column list is used and IDENTITY_INSERT is ON. -- Step 3: Release auto-increment of primary key columns SET IDENTITY_INSERT customers ON; -- Step 4: insert two records with the primary keys 1 and 3. Inserted successfully Insert into MERs (id, name) values (1, 'name1 '); Insert into MERs (id, name) values (3, 'name1 '); -- Step 5: Insert a record with a primary

Tags: delete creat arch div display implementation NULL code BSPEncounter this problem in studyThere are numbered fields in the databaseBH00001BH00002BH00003BH00004How to achieve automatic growth --The following code generates a number with a length of 8, with the number starting with BH and the remaining 6 bits as serial numbers. --get new numbered functions CREATE function f_nextbh () RETURNSChar(8) as BEGIN RETURN (SELECT'BH'+right (1000001+isnull (MAX (BH),6),0),6) from TB with (Xlock,pagloc

Auto-increment variable settings for Oracle, SQL Server, and MySQL: 1. MySQL's auto-incrementing variables are easy to remember. use the AUTO_INCREMENT keyword. if you know English, it is easy to remember. create a table with auto