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Fix typos in rules.sgml.
Add Emacs configuration block to postgres.sgml.
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@@ -169,7 +169,7 @@
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In INSERT queries the targetlist describes the new rows that
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should go into the resultrelation. Missing columns of the
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resultrelation will be added by the optimizer with a constant
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NULL expression. It are the expressions in the VALUES clause
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NULL expression. It is the expressions in the VALUES clause
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or the ones from the SELECT clause on INSERT ... SELECT.
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</Para>
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@@ -178,7 +178,7 @@
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replace the old ones. Here now the optimizer will add missing
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columns by inserting expressions that put the values from the
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old rows into the new one. And it will add the special entry
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like for DELETE too. It are the expressions from the
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like for DELETE too. It is the expressions from the
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SET attribute = expression part of the query.
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</Para>
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