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Frequently Asked Questions (FAQ) for PostgreSQL
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- Last updated: Wed Feb 2 08:40:42 EST 2005
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+ Last updated: Wed Feb 2 12:44:03 EST 2005
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Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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case-insensitive searches?
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4.9) In a query, how do I detect if a field is NULL?
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4.10) What is the difference between the various character types?
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- 4.11.0 ) How do I create a serial/auto-incrementing field?
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- 4.11.1 ) How do I get the value of a SERIAL insert?
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- 4.11.2 ) Doesn't currval() lead to a race condition with other users?
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- 4.11.3 ) Why aren't my sequence numbers reused on transaction abort?
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+ 4.11.1 ) How do I create a serial/auto-incrementing field?
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+ 4.11.2 ) How do I get the value of a SERIAL insert?
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+ 4.11.3 ) Doesn't currval() lead to a race condition with other users?
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+ 4.11.4 ) Why aren't my sequence numbers reused on transaction abort?
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Why are there gaps in the numbering of my sequence/SERIAL column?
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4.12) What is an OID? What is a TID?
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4.13) Why do I get the error "ERROR: Memory exhausted in
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alink ="#0000ff ">
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< H1 > Frequently Asked Questions (FAQ) for PostgreSQL</ H1 >
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- < P > Last updated: Wed Feb 2 08:40:42 EST 2005</ P >
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+ < P > Last updated: Wed Feb 2 12:44:03 EST 2005</ P >
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< P > Current maintainer: Bruce Momjian (< A href =
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"mailto:pgman@candle.pha.pa.us "> pgman@candle.pha.pa.us</ A > )
@@ -88,13 +88,13 @@ <H2 align="center">Operational Questions</H2>
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is < SMALL > NULL</ SMALL > ?< BR >
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< A href ="#4.10 "> 4.10</ A > ) What is the difference between the
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various character types?< BR >
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- < A href ="#4.11.0 "> 4.11.0 </ A > ) How do I create a
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+ < A href ="#4.11.1 "> 4.11.1 </ A > ) How do I create a
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serial/auto-incrementing field?< BR >
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- < A href ="#4.11.1 "> 4.11.1 </ A > ) How do I get the value of a
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+ < A href ="#4.11.2 "> 4.11.2 </ A > ) How do I get the value of a
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< SMALL > SERIAL</ SMALL > insert?< BR >
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- < A href ="#4.11.2 "> 4.11.2 </ A > ) Doesn't < I > currval()</ I >
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+ < A href ="#4.11.3 "> 4.11.3 </ A > ) Doesn't < I > currval()</ I >
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lead to a race condition with other users?< BR >
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- < A href ="#4.11.3 "> 4.11.3 </ A > ) Why aren't my sequence numbers
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+ < A href ="#4.11.4 "> 4.11.4 </ A > ) Why aren't my sequence numbers
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reused on transaction abort? Why are there gaps in the numbering of
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my sequence/SERIAL column?< BR >
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< A href ="#4.12 "> 4.12</ A > ) What is an < SMALL > OID</ SMALL > ? What is a
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