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- <!-- $PostgreSQL: pgsql/doc/src/sgml/ddl.sgml,v 1.94 2010/07/29 19:34:40 petere Exp $ -->
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+ <!-- $PostgreSQL: pgsql/doc/src/sgml/ddl.sgml,v 1.95 2010/08/20 13:59:45 tgl Exp $ -->
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<chapter id="ddl">
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<title>Data Definition</title>
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is fixed, and each column has a name. The number of rows is
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variable — it reflects how much data is stored at a given moment.
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SQL does not make any guarantees about the order of the rows in a
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- table. When a table is read, the rows will appear in random order,
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+ table. When a table is read, the rows will appear in an unspecified order,
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unless sorting is explicitly requested. This is covered in <xref
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linkend="queries">. Furthermore, SQL does not assign unique
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identifiers to rows, so it is possible to have several completely
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- <!-- $PostgreSQL: pgsql/doc/src/sgml/textsearch.sgml,v 1.57 2010/07/29 19:34:40 petere Exp $ -->
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+ <!-- $PostgreSQL: pgsql/doc/src/sgml/textsearch.sgml,v 1.58 2010/08/20 13:59:45 tgl Exp $ -->
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<chapter id="textsearch">
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<title>Full Text Search</title>
@@ -3270,7 +3270,7 @@ CREATE INDEX <replaceable>name</replaceable> ON <replaceable>table</replaceable>
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(<productname>PostgreSQL</productname> does this automatically when needed.)
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GiST indexes are lossy because each document is represented in the
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index by a fixed-length signature. The signature is generated by hashing
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- each word into a random bit in an n-bit string, with all these bits OR-ed
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+ each word into a single bit in an n-bit string, with all these bits OR-ed
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together to produce an n-bit document signature. When two words hash to
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the same bit position there will be a false match. If all words in
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the query have matches (real or false) then the table row must be
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