1DROP TYPE(7) SQL Commands DROP TYPE(7)
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6 DROP TYPE - remove a data type
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10 DROP TYPE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
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14 DROP TYPE removes a user-defined data type. Only the owner of a type
15 can remove it.
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18 IF EXISTS
19 Do not throw an error if the type does not exist. A notice is
20 issued in this case.
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22 name The name (optionally schema-qualified) of the data type to
23 remove.
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25 CASCADE
26 Automatically drop objects that depend on the type (such as ta‐
27 ble columns, functions, operators).
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29 RESTRICT
30 Refuse to drop the type if any objects depend on it. This is the
31 default.
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34 To remove the data type box:
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36 DROP TYPE box;
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40 This command is similar to the corresponding command in the SQL stan‐
41 dard, apart from the IF EXISTS option, which is a PostgreSQL extension.
42 But note that the CREATE TYPE command and the data type extension mech‐
43 anisms in PostgreSQL differ from the SQL standard.
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46 CREATE TYPE [create_type(7)], ALTER TYPE [alter_type(7)]
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50SQL - Language Statements 2011-09-22 DROP TYPE(7)