A nonclustered index that is extended to include nonkey columns in addition to the key columns. Index with Included Columns Full-text A special type of token-based functional index that is built and maintained by the Microsoft Full-Text Engine for SQL Server. It provides efficient support for...
PostgreSQL index types have basically divided into six types, i.e.,B-tree, hash, GIN, BRIN, SP-GIST, and GiST index, each of the index types has different storage structures and algorithm to retrieve data from the query. PostgreSQL 的索引类型基本上分为六种,即B 树索引、哈希索引、GIN 索引...
over-allocated resources will not be used in actual execution because they are not needed. If a compute node needs 100MB to sort the results it will use these 100MB although the query optimizer allocated 4GB of memory for the task on the compute node. The part of the query will use...
MySQL 8.0 does not support year in two-digit format. MS SQL Server Data Types String Data Types Data typeDescriptionMax char lengthStorage char(n)Fixed-length non-Unicode character data (n must be between 1 and 8000)8,000n bytes (uses one byte for each character) ...
Types.Sqlxml Field Reference Feedback Definition Namespace: Java.Sql Assembly: Mono.Android.dll The constant in the Java programming language, sometimes referred to as a type code, that identifies the generic SQL type XML. C# Copy [Android.Runtime.Register("SQLXML")] public const int ...
CREATE LOCAL TEMPORARY TABLE fr_wh_SQL ON COMMIT PRESERVE ROWS AS AS SELECT *, CAST(NULL AS INT) AS typ_idx_col FROM mig_fr_wh_SQL_info_type WHERE FALSE'; … EXTEND GaussDB supports keyword EXTEND. Input - Extend FUNCTION FUNC_EXTEND ( in_str IN VARCHAR2) ...
SQL Server supports the followingnumerictypes. In this section bit (Transact-SQL) decimal and numeric (Transact-SQL) float and real (Transact-SQL) int, bigint, smallint, and tinyint (Transact-SQL) money and smallmoney (Transact-SQL)
SQL Server provides an xml data type that lets you store XML documents and fragments in a SQL Server database. The xml data type is a built-in data type in SQL Server, and is in some ways similar to other built-in types, such as int and varchar. As with other built-in types, ...
Index2.3 Inheritance in SQL Object Types SQL object inheritance is based on a family tree of object types that forms a type hierarchy. The type hierarchy consists of a parent object type, called a supertype, and one or more levels of child object types, called subtypes, which are derived ...
SQL Server also supports the geography data type, which stores ellipsoidal (round-earth) data, such as GPS latitude and longitude coordinates.Tip SQL Server spatial tools is a Microsoft sponsored open-source collection of tools for use with the spatial types in SQL Server. This project provides ...