%s on MTA

[scienziato-pazzo]

Hi, I want to format a string with a custom value from another string. Usually on other languages, like C++, I saw %s, but how to do it on LUA?

[Gallardo9944]

do you mean string.gsub?

[scienziato-pazzo]

I saw the "?" operator, and the "??" operator, but how it works?

[TAPL]

http://lua-users.org/wiki/StringLibraryTutorial

[scienziato-pazzo]

Yes, but for example here (https://wiki.multitheftauto.com/wiki/DbQuery) I saw the "?" and the "??", but how do they work?

[TAPL]

This is just to make you able to put the string after the comma.

So this:

dbExec( connection, "UPDATE `??` SET `??`=?", tableName, columnName, columnValue ) 

Is the same as this:

dbExec( connection, "UPDATE `tableName` SET `columnName`=columnValue" ) 

[scienziato-pazzo]

Ooooh, thanks. But what's the difference between ?? and ?.

[Castillo]

I think that "??" is used for column and table names and "?" is used for values.

[scienziato-pazzo]

Ok, thanks.

[ixjf]

You can format strings in Lua with string.format.