Re: help on mysql tables
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 What are the results you expect. There are always workarounds Adrian On Fri, 30 Mar 2001, Ramasamy Palaniappan wrote: Sir, created the following tables as primary and secondary primary : partycode(primary key),partyname secondary : partycode(references to primary),companyname select partycode,companyname from secondary where partycode=(select partycode from primary where partyname=""); as per mysql - the above query returns the syntax error. please send the correct syntax and also the below query select partycode,companyname from secondary where partycode='select partycode from primary where partyname=""'; if we try to execute the above code, it returns an empty set even if the values are there in the table. I am expecting the reply sir. regards palani _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. -BEGIN PGP SIGNATURE- Version: GnuPG v1.0.2 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE6xYov/f1mUNueu/oRArvuAKCDVWBl1pm9xlRbzsOKnV3C9C90QQCaApCE nUJ7VOTiTtjYbaNmd8gwrtQ= =xL3I -END PGP SIGNATURE- - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
help on mysql tables
Sir, created the following tables as primary and secondary primary : partycode(primary key),partyname secondary : partycode(references to primary),companyname select partycode,companyname from secondary where partycode=(select partycode from primary where partyname=""); as per mysql - the above query returns the syntax error. please send the correct syntax and also the below query select partycode,companyname from secondary where partycode='select partycode from primary where partyname=""'; if we try to execute the above code, it returns an empty set even if the values are there in the table. I am expecting the reply sir. regards palani _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: help on mysql tables
mysql doesn't support subselects. Jeff Levy Software Design Meta-Craft Creations On Fri, 30 Mar 2001, Ramasamy Palaniappan wrote: Sir, created the following tables as primary and secondary primary : partycode(primary key),partyname secondary : partycode(references to primary),companyname select partycode,companyname from secondary where partycode=(select partycode from primary where partyname=""); as per mysql - the above query returns the syntax error. please send the correct syntax and also the below query select partycode,companyname from secondary where partycode='select partycode from primary where partyname=""'; if we try to execute the above code, it returns an empty set even if the values are there in the table. I am expecting the reply sir. regards palani _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
help on mysql tables
Dear Sir,
I have created the following table:
create table test(name varchar(10) NOT NULL);
query is ok
I HAVE TRIED THE FOLLOWING QUERY :
insert into test values("");
MYSQL COMMAND IS ACCEPTING THE ABOVE QUERY WHICH VIOLATES NOT NULL
CONSTRAINTS.
PLEASE CHECK THE ABOVE QUERY
KINDLY INFORM ME THE CORRECT SYNTAX SIR.
THANKS AND REGARDS.
Palaniappan.
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Re: help on mysql tables
Sir,
please tell me how to stop mysql from accepting empty string values.
it accepts empty string values even when i enclosed in single quotes.
pl inform me with the syntax.
rgds
palani
From: "Dennis Salguero" [EMAIL PROTECTED]
To: "Ramasamy Palaniappan" [EMAIL PROTECTED],
[EMAIL PROTECTED]
Subject: Re: help on mysql tables
Date: Tue, 27 Mar 2001 07:08:29 -0500
- Original Message -
From: "Ramasamy Palaniappan" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, March 27, 2001 6:53 AM
Subject: help on mysql tables
I have created the following table:
create table test(name varchar(10) NOT NULL);
query is ok
Yes, but notice that you put a constraint of NOT NULL on the field. This
means that there has to be a value in this field, in every record.
I HAVE TRIED THE FOLLOWING QUERY :
insert into test values("");
MYSQL COMMAND IS ACCEPTING THE ABOVE QUERY WHICH VIOLATES NOT NULL
CONSTRAINTS.
First problem is that you should specify a table field after the table name
and you should specify a corresponding piece of data in the VALUES portion
of your statement. Next, you need to make sure that the data you enter is
NOT blank since the field has a NOT NULL constraint. Finally, you should
encase your data in single quotation marks, not double quotation marks.
Therefore, change your statement to:
INSERT INTO test(name) VALUES('something');
If your table has only one field, you can also use the statement below:
INSERT INTO test VALUES('something');
Good luck,
Dennis
**'
Beridney Computer Services
[EMAIL PROTECTED]
P: 703-566-3196
http://www.beridney.com
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RE: help on MySQL tables
Hi Rick,
You absolutely right, you are not required to specify field names in an
Insert. But it's a good idea to do so. 1) It makes you code more readable
for those following you. 2) If your table ever changes structure, your
Insert will still work. (Assuming you didn't remove one or more of the
fields you are inserting into.)
Cal
http://www.calevans.com
-Original Message-
From: Rick Emery [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 27, 2001 1:25 PM
To: [EMAIL PROTECTED]
Subject: RE: help on mysql tables
You DO NOT need to specify table field names when INSERTing records. For
instance, if the table were defined thus:
CREATE TABLE mytable (
valueA varchar(10) NOT NULL,
valueB varchar(25),
valueC varchar(30) );
This statement will insert one record:
INSERT INTO mytable VALUES("some text", "more text", "last text");
To insert multiple records, go with:
INSERT INTO mytable VALUES("some text", "more text", "last text"),("record
2","text for 2","last text in 2");
- Original Message -
From: "Ramasamy Palaniappan" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, March 27, 2001 6:53 AM
Subject: help on mysql tables
I have created the following table:
create table test(name varchar(10) NOT NULL);
query is ok
Yes, but notice that you put a constraint of NOT NULL on the field. This
means that there has to be a value in this field, in every record.
I HAVE TRIED THE FOLLOWING QUERY :
insert into test values("");
MYSQL COMMAND IS ACCEPTING THE ABOVE QUERY WHICH VIOLATES NOT NULL
CONSTRAINTS.
First problem is that you should specify a table field after the table name
and you should specify a corresponding piece of data in the VALUES portion
of your statement. Next, you need to make sure that the data you enter is
NOT blank since the field has a NOT NULL constraint. Finally, you should
encase your data in single quotation marks, not double quotation marks.
Therefore, change your statement to:
INSERT INTO test(name) VALUES('something');
If your table has only one field, you can also use the statement below:
INSERT INTO test VALUES('something');
Good luck,
Dennis
**'
Beridney Computer Services
[EMAIL PROTECTED]
P: 703-566-3196
http://www.beridney.com
-
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