Methods
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assignAlias
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assignAlias ( rv )
XXX
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assignAliasesFor
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assignAliasesFor ( rvs )
XXX
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getAlias
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getAlias ( rv )
XXX
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namedParam
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namedParam ( param )
Add the parameter object to the statement being written
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prepender
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prepender ( prefix )
Return a new ISQLWriter that will write prefix before any output
This method is used when writing optional WHERE/HAVING clauses, by
obtaining a new writer with e.g.:
writer.prepender(" WHERE ").writeCond(someCondition)
If the new writer has any text written to it, it will write the prefix
once, before any subsequent output. Note that you should not mix use
of the new writer with use of the old writer. Once you're done with
the new writer, throw it away and go back to the previous writer.
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separator
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separator ( sep )
Return a callable that writes a separator (except first time)
This method is used for writing comma-separated lists, or lists of
AND/OR expressions, e.g.:
sep = writer.separator(', ')
for item in someExprs:
sep()
writer.writeExpr(item)
The callable returned by this method will not write the separator
the first time it's called, so that the separator will only be written
between items. Note that this means you must call this method to get
a new separator callable for each list you want to output.
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write
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write ( text )
Write text to the SQL output
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writeAlias
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writeAlias ( RV )
Write RV as an SQL table alias (e.g. the F1 in F1.Bar )
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writeCond
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writeCond ( ob )
Write ob as an SQL condition
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writeExpr
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writeExpr ( ob )
Write ob as an SQL expression
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writeSelect
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writeSelect ( ob )
Write ob as an SQL SELECT statement
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writeTable
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writeTable ( RV )
Write RV as an SQL table reference (e.g. "Foo AS F1")
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