diff options
| -rw-r--r-- | doc/src/sgml/ddl.sgml | 6 | ||||
| -rw-r--r-- | doc/src/sgml/ref/create_table.sgml | 8 |
2 files changed, 10 insertions, 4 deletions
diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml index 0a0ff42e881..9d7e2c756be 100644 --- a/doc/src/sgml/ddl.sgml +++ b/doc/src/sgml/ddl.sgml @@ -3003,7 +3003,11 @@ SELECT * FROM information WHERE group_id = 2 FOR UPDATE; <para> A database contains one or more named <firstterm>schemas</firstterm>, which in turn contain tables. Schemas also contain other kinds of named - objects, including data types, functions, and operators. The same + objects, including data types, functions, and operators. Within one + schema, two objects of the same type cannot have the same name. + Furthermore, tables, sequences, indexes, views, materialized views, and + foreign tables share the same namespace, so that, for example, an index and + a table must have different names if they are in the same schema. The same object name can be used in different schemas without conflict; for example, both <literal>schema1</literal> and <literal>myschema</literal> can contain tables named <literal>mytable</literal>. Unlike databases, diff --git a/doc/src/sgml/ref/create_table.sgml b/doc/src/sgml/ref/create_table.sgml index d563f02b00f..4cbaaccaf7c 100644 --- a/doc/src/sgml/ref/create_table.sgml +++ b/doc/src/sgml/ref/create_table.sgml @@ -1027,7 +1027,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM Adding a unique constraint will automatically create a unique B-tree index on the column or group of columns used in the constraint. But if the constraint includes a <literal>WITHOUT OVERLAPS</literal> clause, it - will use a GiST index. + will use a GiST index. The created index has the same name as the unique + constraint. </para> <para> @@ -1082,6 +1083,7 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM <literal>PRIMARY KEY</literal> constraint will automatically create a unique B-tree index, or GiST if <literal>WITHOUT OVERLAPS</literal> was specified, on the column or group of columns used in the constraint. + That index has the same name as the primary key constraint. </para> <para> @@ -1118,8 +1120,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM <para> Exclusion constraints are implemented using - an index, so each specified operator must be associated with an - appropriate operator class + an index that has the same name as the constraint, so each specified + operator must be associated with an appropriate operator class (see <xref linkend="indexes-opclass"/>) for the index access method <replaceable>index_method</replaceable>. The operators are required to be commutative. |