If I have a table TABLE_1 with, lets say 5 columns:开发者_StackOverflow COL1|COL2|COL3|COL4|COL5 [line]
I have a table like this CREATE TABLE IF NOT EXISTS `tbl_folder` ( `id` int(11) NOT NULL AUTO_INCREMENT,
I\'ve be told and read it everywhere (but no one dared to explain why) that when composing an index on multiple columns I should put the most selective column first, for performance reasons.
I want to use an html parser that does the following in a nice, elegant way Extract text (this is most important)
I want to build a user interface similar to the sketch below: When the user fills out the form on the right and clicks the \'Plot!\' button, a new closeable tab opens on the left with a chart.
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