Re: [sqlite] Syntax Errors with various strings?
Thanks Gerry, My strings are normal filenames with their paths, so as you can see there arent many characters that would ruin my day, however you're right about the ' char. I'll make my own quote(); routine and then I'll compare with the SQLite one by doing a small benchmark, see whats best for my case. I guess mine will win since I'll be able to make a macro in ASM. Instead of a DLL call, etc. Just by having the proc call, we lose cycles. - Original Message - From: "Gerry Snyder" <[EMAIL PROTECTED]> To: <sqlite-users@sqlite.org> Sent: Wednesday, July 05, 2006 5:13 PM Subject: Re: [sqlite] Syntax Errors with various strings? Gussimulator wrote: Thanks Christian, I'll give it a shot later. Just because using quotation marks (did a quick macro that adds them to my string) did the job, doesnt mean its a better solution than this one. In particular, if your strings include the ' character, you will need to double it (make it '' ) somehow, and the quote() function will take care of this, as well as enclosing the string in quotation marks. Gerry
Re: [sqlite] Syntax Errors with various strings?
Gussimulator wrote: Thanks Christian, I'll give it a shot later. Just because using quotation marks (did a quick macro that adds them to my string) did the job, doesnt mean its a better solution than this one. In particular, if your strings include the ' character, you will need to double it (make it '' ) somehow, and the quote() function will take care of this, as well as enclosing the string in quotation marks. Gerry
Re: [sqlite] Syntax Errors with various strings?
Thanks Christian, I'll give it a shot later. Just because using quotation marks (did a quick macro that adds them to my string) did the job, doesnt mean its a better solution than this one. - Original Message - From: "Christian Nassau" <[EMAIL PROTECTED]> To: <sqlite-users@sqlite.org> Sent: Wednesday, July 05, 2006 7:18 AM Subject: Re: [sqlite] Syntax Errors with various strings? Have you tried using the quote() function? From http://www.sqlite.org/lang_expr.html quote(X) This routine returns a string which is the value of its argument suitable for inclusion into another SQL statement. Strings are surrounded by single-quotes with escapes on interior quotes as needed. BLOBs are encoded as hexadecimal literals. The current implementation of VACUUM uses this function. The function is also useful when writing triggers to implement undo/redo functionality. Gussimulator wrote: Hi, When I have strings with "-", "!", "\" or similar characters I get a syntax error.. Now, I thought this would happen with a few of this chars so I made 2 routines in my program, one that converts each of this chars into a flag string, which then, by the other routine can be reverted to the original characters to obtain the string in its original form, so I can later work with it by my side. Now, I've found myself with syntax errors even on strings that didnt had any strange characters, So.. I'm wondering, what can I do to prevent this? Does SQLite provide a "format" routine or is there anything I can do to prevent the syntax errors... like this ones? (since my data wont get into the db if theres an error, of course, thats why Im concerned). I'm really worried about this, hence I subscribed on the list (first message!). I hope someone can help me out on this one, thanks. And, Indeed.. I'm quite a newbie on SQL but, I never thought I'd find myself with this type of problem. -- --- Christian Nassau Software Developer --- Swissrisk Holzhausenstrasse 44, 60322 Frankfurt, Germany tele: +49 69 50952-266 fax: +49 69 50952-299 www.swissrisk.com ---
Re: [sqlite] Syntax Errors with various strings? & ...Ampersand
Enclosing the strings with quotation marks did the job. Thanks a lot. - Original Message - From: "C.Peachment" <[EMAIL PROTECTED]> To: <sqlite-users@sqlite.org> Sent: Wednesday, July 05, 2006 6:39 AM Subject: Re: [sqlite] Syntax Errors with various strings? & ...Ampersand The solution I have adopted to both of these issues is to: 1. ensure all strings are enclosed by matching quotation marks, and 2. use the question mark substitution form of prepared statement with subsequent bind of parameters. This can only be done from a programming language and not the command line interface. On Wed, 05 Jul 2006 10:44:31 +0200, Roger wrote: I have a company name as follows: Chemistry & chemicals I have plenty of those in my database which come with ampersands, now when i do a query i get nothing. How best can i write the query using a string with an ampersand as part of it. I am developing in a PHP/SQlite environment. On Wed, 5 Jul 2006 06:07:46 -0300, Gussimulator wrote: Hi, When I have strings with "-", "!", "\" or similar characters I get a syntax error.. Now, I thought this would happen with a few of this chars so I made 2 routines in my program, one that converts each of this chars into a flag string, which then, by the other routine can be reverted to the original characters to obtain the string in its original form, so I can later work with it by my side. Now, I've found myself with syntax errors even on strings that didnt had any strange characters, So.. I'm wondering, what can I do to prevent this? Does SQLite provide a "format" routine or is there anything I can do to prevent the syntax errors... like this ones? (since my data wont get into the db if theres an error, of course, thats why Im concerned). I'm really worried about this, hence I subscribed on the list (first message!). I hope someone can help me out on this one, thanks. And, Indeed.. I'm quite a newbie on SQL but, I never thought I'd find myself with this type of problem.
Re: [sqlite] Syntax Errors with various strings?
Gussimulator wrote: Hi, When I have strings with "-", "!", "\" or similar characters I get a syntax error.. Now, I thought this would happen with a few of this chars so I made 2 routines in my program, one that converts each of this chars into a flag string, which then, by the other routine can be reverted to the original characters to obtain the string in its original form, so I can later work with it by my side. When do you get these syntax errors and how are the strings being passed to SQLite? Are you using the correct single quote character (i.e. the ' not the ") as a string delimiter? Dennis Cote
Re: [sqlite] Syntax Errors with various strings?
Have you tried using the quote() function? >From http://www.sqlite.org/lang_expr.html quote(X)This routine returns a string which is the value of its argument suitable for inclusion into another SQL statement. Strings are surrounded by single-quotes with escapes on interior quotes as needed. BLOBs are encoded as hexadecimal literals. The current implementation of VACUUM uses this function. The function is also useful when writing triggers to implement undo/redo functionality. Gussimulator wrote: > Hi, When I have strings with "-", "!", "\" or similar characters I get a > syntax error.. Now, I thought this would happen with a few of this chars so I > made 2 routines in my program, one that converts each of this chars into a > flag string, which then, by the other routine can be reverted to the original > characters to obtain the string in its original form, so I can later work > with it by my side. > > Now, I've found myself with syntax errors even on strings that didnt had any > strange characters, So.. I'm wondering, what can I do to prevent this? Does > SQLite provide a "format" routine or is there anything I can do to prevent > the syntax errors... like this ones? (since my data wont get into the db if > theres an error, of course, thats why Im concerned). > > I'm really worried about this, hence I subscribed on the list (first > message!). I hope someone can help me out on this one, thanks. > > And, Indeed.. I'm quite a newbie on SQL but, I never thought I'd find myself > with this type of problem. > > -- --- Christian Nassau Software Developer --- Swissrisk Holzhausenstrasse 44, 60322 Frankfurt, Germany tele: +49 69 50952-266 fax: +49 69 50952-299 www.swissrisk.com ---
Re: [sqlite] Syntax Errors with various strings? & ...Ampersand
The solution I have adopted to both of these issues is to: 1. ensure all strings are enclosed by matching quotation marks, and 2. use the question mark substitution form of prepared statement with subsequent bind of parameters. This can only be done from a programming language and not the command line interface. On Wed, 05 Jul 2006 10:44:31 +0200, Roger wrote: >I have a company name as follows: >Chemistry & chemicals >I have plenty of those in my database which come with ampersands, now >when i do a query i get nothing. >How best can i write the query using a string with an ampersand as part >of it. >I am developing in a PHP/SQlite environment. On Wed, 5 Jul 2006 06:07:46 -0300, Gussimulator wrote: >Hi, When I have strings with "-", "!", "\" or similar characters I get a >syntax error.. Now, I thought this would happen with a few of this chars so I made 2 routines in my program, one that converts each of this chars into a flag string, which then, by the other routine can be reverted to the original characters to obtain the string in its original form, so I can later work with it by my side. >Now, I've found myself with syntax errors even on strings that didnt had any >strange characters, So.. I'm wondering, what can I do to prevent this? Does SQLite provide a "format" routine or is there anything I can do to prevent the syntax errors... like this ones? (since my data wont get into the db if theres an error, of course, thats why Im concerned). >I'm really worried about this, hence I subscribed on the list (first >message!). I hope someone can help me out on this one, thanks. >And, Indeed.. I'm quite a newbie on SQL but, I never thought I'd find myself >with this type of problem.
[sqlite] Syntax Errors with various strings?
Hi, When I have strings with "-", "!", "\" or similar characters I get a syntax error.. Now, I thought this would happen with a few of this chars so I made 2 routines in my program, one that converts each of this chars into a flag string, which then, by the other routine can be reverted to the original characters to obtain the string in its original form, so I can later work with it by my side. Now, I've found myself with syntax errors even on strings that didnt had any strange characters, So.. I'm wondering, what can I do to prevent this? Does SQLite provide a "format" routine or is there anything I can do to prevent the syntax errors... like this ones? (since my data wont get into the db if theres an error, of course, thats why Im concerned). I'm really worried about this, hence I subscribed on the list (first message!). I hope someone can help me out on this one, thanks. And, Indeed.. I'm quite a newbie on SQL but, I never thought I'd find myself with this type of problem.
