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TITLE="PostgreSQL 9.1beta1 Documentation"
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TITLE="System Catalogs"
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>PostgreSQL 9.1beta1 Documentation</A
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HREF="catalog-pg-amop.html"
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TITLE="System Catalogs"
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>Chapter 45. System Catalogs</TD
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TITLE="System Catalogs"
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HREF="catalog-pg-attrdef.html"
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NAME="CATALOG-PG-AMPROC"
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> stores information about
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support procedures associated with access method operator families. There
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is one row for each support procedure belonging to an operator family.
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><COL><COL><COL><COL><THEAD
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HREF="catalog-pg-opfamily.html"
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>The operator family this entry is for</TD
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>Left-hand input data type of associated operator</TD
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HREF="catalog-pg-type.html"
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>Right-hand input data type of associated operator</TD
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>Support procedure number</TD
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HREF="catalog-pg-proc.html"
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>OID of the procedure</TD
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> The usual interpretation of the
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is that they identify the left and right input types of the operator(s)
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that a particular support procedure supports. For some access methods
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these match the input data type(s) of the support procedure itself, for
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others not. There is a notion of <SPAN
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> support procedures for
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an index, which are those with <TT
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> both equal to the index opclass's
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