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Max length of SQL statement

P: n/a

Do any one know the max length of a SQL statement?


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Nov 12 '05 #1
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P: n/a
"Carmen Wai" <wa********> writes:
Do any one know the max length of a SQL statement?

There is no specific limit; it'll depend on available memory and
complexity of the statement. I've run tests with multi-megabyte
string literals, tens of thousands of WHERE clauses, etc.

MySQL's "crashme" test program attempts to discover the maximum length
of a SQL statement in the tested database. The last time I tried it,
I was highly amused to watch the test program run out of memory and dump
core before Postgres did. (This was a couple years back, so maybe
they've fixed their problem by now.)

regards, tom lane

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Nov 12 '05 #2

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