autonumber

How to create an AutoNumber field value in Access?

不打扰是莪最后的温柔 提交于 2019-11-29 04:37:24
I'm trying the following: CREATE TABLE Table1 ( RecordNo autonumber, --error here! PersonId varchar(50), ... ) But, there is an error. How can I build the correct query in Access? Eugene Yokota According to SQL Auto Increment a Field : CREATE TABLE Persons ( P_Id PRIMARY KEY AUTOINCREMENT, LastName varchar(255) NOT NULL, FirstName varchar(255), Address varchar(255), City varchar(255) ) The MS Access uses the AUTOINCREMENT keyword to perform an auto-increment feature. By default, the starting value for AUTOINCREMENT is 1, and it will increment by 1 for each new record. To specify that the " P

Is Access's AutoNumber (Increment) guaranteed to increment?

坚强是说给别人听的谎言 提交于 2019-11-28 13:06:49
For a particular table, I have my ID field set to AutoNumber (Increment). If I add 5 rows to this table in quick succession, is each guaranteed to have a larger ID than the last? For instance, does autonumbering ever restart from 1 if some earlier values have been deleted? The only time I have ever had trouble with Access autonumbers is when, in error, I set the value of an autonumber key field to a number lower than the current maximum using an append query. Gaps had been created in the numbering by record deletions. Access allows you to force a value into an autonumber field, and sometimes

Is Access's AutoNumber (Increment) guaranteed to increment?

北战南征 提交于 2019-11-27 07:24:26
问题 For a particular table, I have my ID field set to AutoNumber (Increment). If I add 5 rows to this table in quick succession, is each guaranteed to have a larger ID than the last? For instance, does autonumbering ever restart from 1 if some earlier values have been deleted? 回答1: The only time I have ever had trouble with Access autonumbers is when, in error, I set the value of an autonumber key field to a number lower than the current maximum using an append query. Gaps had been created in the