云数据库 GAUSSDB-CREATE INDEX:语法格式

时间：2024-04-26 16:15:15

云数据库 GAUSSDB

语法格式

在表上创建索引。

CREATE [ UNIQUE ] INDEX [ CONCURRENTLY ] [ [schema_name.] index_name ] ON table_name [ USING method ]
    ({ { column_name [ ( length ) ] | ( expression ) } [ COLLATE collation ] [ opclass ] [ ASC | DESC ] [ NULLS { FIRST | LAST } ] }[, ...] )
    [ INCLUDE ( column_name [, ...] ) ]
    [ WITH ( {storage_parameter = value} [, ... ] ) ]
    [ TABLESPACE tablespace_name ]
    [ WHERE predicate ];

在分区表上创建索引。

CREATE [ UNIQUE ] INDEX [ CONCURRENTLY ] [ [schema_name.] index_name ] ON table_name [ USING method ]
    ( { { column_name [ ( length ) ] | ( expression ) } [ COLLATE collation ] [ opclass ] [ ASC | DESC ] [ NULLS LAST ] } [, ...] )
    [ LOCAL [ ( { PARTITION index_partition_name | SUBPARTITION index_subpartition_name [ TABLESPACE index_partition_tablespace ] } [, ...] ) ] | GLOBAL ]
    [ INCLUDE ( column_name [, ...] ) ]
    [ WITH ( { storage_parameter = value } [, ...] ) ]
    [ TABLESPACE tablespace_name ];

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