truncate

I have an InnoDB table that needs to be re-populated every ten minutes within anywhere from 60k to 200k records. Our approach up to this point has been as follows: Turn off Autocommit Truncate the table Perform Select Queries & additional Calculations (using PHP) Insert new records Commit After the Truncate operation is performed though, the data is immediately deleted, and is no longer available from the User Interface. To our users, this has been pretty disconcerting, even though within about 30 seconds or so the script encounters the Commit operation and the table is repopulated. I thought

I'm trying to figure out a way to count the number of characters in a string, truncate the string, then returns it. However, I need this function to NOT count HTML tags. The problem is that if it counts HTML tags, then if the truncate point is in the middle of a tag, then the page will appear broken. This is what I have so far... public string Truncate(string input, int characterLimit, string currID) { string output = input; // Check if the string is longer than the allowed amount // otherwise do nothing if (output.Length > characterLimit && characterLimit > 0) { // cut the string down to the

I am reading from a file of which each line is longer than 63 characters and I want the characters to be truncated at 63. However, it fails to truncate the lines read from the file. In this program we are assuming that the file has 10 lines only: #include <stdio.h> #include <stdlib.h> int main(void) { char a[10][63]; char line[255]; int count = 0; //Open file FILE *fp; fp = fopen("lines.dat", "r"); //Read each line from file to the "line array" while(fgets(line, 255,fp) != NULL) { line[63] = '\0'; //copy the lines into "a array" char by char int x; for(x = 0; x < 64; ++x) { a[count][x] = line

Is trunc and round the same with negative arguments? SQL> select round(123456.76,-4) from dual; ROUND(123456.76,-4) ------------------- 120000 SQL> select trunc(123456.76,-4) from dual; TRUNC(123456.76,-4) ------------------- 120000 No, behavior depends on the value of the significant digit (the 3rd digit (the 3) is the significant one in your case, as it is below 5 round and trunc do the same ) try select trunc(125456.76,-4) from dual (result is 120000) vs select round(125456.76,-4) from dual (result is 130000). Now when the significant digit is 5 (or higher) the results of trunc and round

I have some content (some from an external source, some specially written) that is displayed in a kind of blog format. I want to cut off the text after a certain number of characters, so currently I'm doing this: <?=substr( strip_tags($a['content']), 0, 400 )?> The problem is, this loses all the formatting and I just get one massive blob of text. But if I don't strip the tags, obviously some tags will go unclosed and mess up the layout. What would be a good way to truncate after X number of characters, but also keep some basic formatting? Not convinced if this is the best approach for your