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Transaction isolation levels relation with locks on table
...ds the data under some condition i.e. WHERE aField > 10 AND aField < 20, A inserts data where aField value is between 10 and 20, then B reads the data again and get a different result.
SERIALIZABLE - lock on a full table(on which Select query is fired). This means, B reads the data and no othe...
What is the difference between NULL, '\0' and 0?
...00000 (32 vs 64 bit)
NUL - 0x00 or 0x0000 (ascii vs 2byte unicode)
'0' - 0x20
I hope this clarifies it.
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