by Lisa Grigla » Fri, 08 Apr 1994 22:14:24
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Lisa Griglack
Hughes Network Systems, Inc.
(301) 601-7211
by Roy Ha » Sat, 09 Apr 1994 05:55:55
Whatever the source of your information is, I am afraid it is just
dead wrong. This has been the subject of a moderately long thread
on this group in the last month. No, INGRES does NOT have a serial
datatype. Possibly your source was talking about the logical key
data types. These are (IMO) of limited usefulness, but there are
people on this group who insist that they are good and useful so you
should check them out to see if yours is one of the kinds of problems
they address.
Yes, the logical key type appeared in Release 6.
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Some database engines like INFORMIX offer a serial data type. Can I build
this datatype with SQL-Server 6.5?
The behaviour is as follows:
1) insert into tb_table (c_serial, c_char) values (111, "test")
-> inserts 111 in c_serial and "test" in c_char
2) insert into tb_table(c_serial, c_char) values (0, "test")
-> insert 112 in c_serial and "test" in c_char
3) insert into tb_table(c_char) values("test")
-> inserts 113 in c_serial and "test" in c_char
Statement 2 + 3 insert the next available number in c_serial.
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