SQL Insert with blank in the middle

dredwerker has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: SQL Insert with blank in the middle by mje (Curate) on Jul 08, 2010 at 08:03 UTC
See quote but better would be to use a parameter: `$dbh2->do("INSERT INTO PerlTest (Postcode,street_column,streetCount) V +ALUES ('',?,0)", undef, $mystreet);` [download]	[reply] [d/l]
Re^2: SQL Insert with blank in the middle by CountZero (Bishop) on Jul 08, 2010 at 08:19 UTC
ALWAYS use parameters EVERYWHERE: `$dbh2->do("INSERT INTO PerlTest (Postcode,street_column,streetCount) V +ALUES (?,?,?)", undef, '', $mystreet, 0);` [download] CountZero A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James	[reply] [d/l]
Re^3: SQL Insert with blank in the middle by JavaFan (Canon) on Jul 08, 2010 at 09:22 UTC
ALWAYS use parameters EVERYWHERE Yeah, except of course where you can't. Note the OPs problem is having a space in the column name, with the column name stored in a variable. I do not know any engine that allows a placeholder for a column name. (In the OPs case, I wonder if the $_ for the column name is actually correct, but I do want to point out that you cannot use parameter EVERYWHERE. Table names are an other example of where you cannot use parameters.)	[reply]
Re^4: SQL Insert with blank in the middle by mje (Curate) on Jul 08, 2010 at 12:09 UTC
Re^4: SQL Insert with blank in the middle by amedico (Sexton) on Jul 11, 2010 at 17:49 UTC
Re^3: SQL Insert with blank in the middle by Jenda (Abbot) on Jul 08, 2010 at 09:22 UTC
For constants? Why? Why would you want to force both the server and the client to do more work? You should definitely use placeholders for data coming from outside, but I don't see any reason to use them for literal constants. Jenda Enoch was right! Enjoy the last years of Rome.	[reply]
Re^4: SQL Insert with blank in the middle by CountZero (Bishop) on Jul 08, 2010 at 13:04 UTC
Re^5: SQL Insert with blank in the middle by Jenda (Abbot) on Jul 08, 2010 at 13:26 UTC
Some notes below your chosen depth have not been shown here
Re^4: SQL Insert with blank in the middle by dredwerker (Initiate) on Jul 09, 2010 at 08:19 UTC
Re^5: SQL Insert with blank in the middle by mje (Curate) on Jul 12, 2010 at 09:21 UTC
Re: SQL Insert with blank in the middle by DrHyde (Prior) on Jul 08, 2010 at 10:05 UTC
You have three problems. you are trying to put a value into a column of the same name. This is either an error in your code or is an error in your database design. you're not using placeholders. you've obviously not got your program to spit out the SQL that is causing the problem (or looked in the database logs). Once you've done that, it will be obvious how to make the syntax error go away.	[reply]
Re: SQL Insert with blank in the middle by cdarke (Prior) on Jul 08, 2010 at 07:55 UTC
I think this is an SQL problem. Usually values with embedded spaces need single quotes around them, although I don't know your particular database.	[reply]
Re^2: SQL Insert with blank in the middle by k_manimuthu (Monk) on Jul 08, 2010 at 08:15 UTC
`$dbh2->do("INSERT INTO PerlTest (Postcode,$_,streetCount) VALUES ('',$ +_,0)");` [download] I think '$_' value is 'Place' and the datatype is 'varchar'. While use a varchar values in 'values' block, the value must be in between single quote. try the below code. `$dbh2->do("INSERT INTO PerlTest (Postcode,$_,streetCount) VALUES ('',' +\$_\',0)");` [download]	[reply] [d/l] [select]
Re: SQL Insert with blank in the middle by petdance (Parson) on Jul 08, 2010 at 15:49 UTC
Please always use placeholders for parameterizing your SQL code. See http://bobby-tables.com/ for details on how, and refer your friends there, too. xoxo, Andy	[reply]