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Why the length of the int4 type of postgresql can reach 10 bits
two questions:
Why the length of the int4 type of postgresql can reach 10 bits, but it is set to 32 bits in the attribute
The int4 type length of postgresql is set to 32 bits by default, so why can t it be modified? it is still 32 bits after modif...
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What happens in JAVA about using = = and println
Integer a = 1; Integer b = 2; Long c = 3L; c = a compiler error will result in the error that int cannot be converted to long System.out.println (compiled normally, resulting in true
Why? I know that when int and long add up, they both turn i...
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bc9212-30938.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bc9212-30938.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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