dpkpaxhzffixp8426 2016-08-18 18:20
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在Golang中做什么

I have a variable defined like this

var selectStatement = `
    SELECT role FROM abc INNER JOIN xyz ON (abc.name = 'Service list')
`

Now what I want to do is instead of using hardcoded 'Service list' I want to read a variable value something like

var myvar = "operation"
var selectStatement = `
    SELECT role FROM abc INNER JOIN xyz ON (abc.name = $myvar)
`

I know its very simple if there was "string" instead of `string`. How can I achieve this. What is the difference between "string" and `string`?

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  • duan5801 2016-08-18 18:22
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    ` That back tick, (on the tilde key) is for declaring string literals. It makes it so you can have quotes and new lines and they are interpreted literally rather than breaking the string.

    To solve your bigger problem use fmt.Sprintf so...

    var selectStatement = `
        SELECT role FROM abc INNER JOIN xyz ON (abc.name = '%s')
    `
    
    selectStatement = fmt.Sprintf(selectStatement, ValueGoingWherePercentSIsNow)
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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