1DROP CAST() SQL Commands DROP CAST()
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6 DROP CAST - remove a cast
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10 DROP CAST [ IF EXISTS ] (sourcetype AS targettype) [ CASCADE | RESTRICT ]
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14 DROP CAST removes a previously defined cast.
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16 To be able to drop a cast, you must own the source or the target data
17 type. These are the same privileges that are required to create a cast.
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20 IF EXISTS
21 Do not throw an error if the cast does not exist. A notice is
22 issued in this case.
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24 sourcetype
25 The name of the source data type of the cast.
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27 targettype
28 The name of the target data type of the cast.
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30 CASCADE
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32 RESTRICT
33 These key words do not have any effect, since there are no
34 dependencies on casts.
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37 To drop the cast from type text to type int:
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39 DROP CAST (text AS int);
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43 The DROP CAST command conforms to the SQL standard.
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46 CREATE CAST [create_cast(7)]
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50SQL - Language Statements 2008-06-08 DROP CAST()