obclient>CREATETABLEtbl10(col1INTPRIMARYKEY,col2INT)PARALLEL3;Query OK,0rowsaffected 使用函数定义列的默认值。 obclient>CREATESEQUENCE SEQ_PERSONIPTVSEQSTARTWITH1MINVALUE1MAXVALUE10INCREMENTBY2NOCYCLE NOORDER CACHE30;Query OK,0rowsaffected obclient>SELECTLPAD(SEQ_PERSONIPTVSEQ.NEXTVAL,18,TO_CHAR(SYSD...
CREATE INDEX IDX_Users_UserName ON #Users(UserName) [/cc]Even though you can implicitly create a clustered index on a table variable (@table) by defining a primary key or unique constraint, it is generally more efficient to use a temp table. The downside is recompilation, however this can...
CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } | UNLOGGED ] TABLE [ IF NOT EXISTS ] table_name { ({ column_name data_type [ compress_mode ] [ COLLATE collation ] [ column_constraint [ ... ] ] | table_constraint | LIKE source_table [ like_option [...] ] } [, ... ]...
obclient>CREATETABLEtbl10(col1INTPRIMARYKEY,col2INT)PARALLEL3;Query OK,0rowsaffected 使用函数定义列的默认值。 obclient>CREATESEQUENCE SEQ_PERSONIPTVSEQSTARTWITH1MINVALUE1MAXVALUE10INCREMENTBY2NOCYCLE NOORDER CACHE30;Query OK,0rowsaffected obclient>SELECTLPAD(SEQ_PERSONIPTVSEQ.NEXTVAL,18,TO_CHAR(SYSD...
If a temporary table is created with a named constraint and the temporary table is created within the scope of a user-defined transaction, only one user at a time can execute the statement that creates the temp table. For example, if a stored procedure creates a temporary table with a name...
CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } | UNLOGGED ] TABLE [ IF NOT EXISTS ] table_name ({ column_name data_type [ compress_mode ] [ COLLATE collation ] [ column_constraint [ ... ] ] | table_constraint | LIKE source_table [ like_option [...] ] } [, ... ]) ...
If a temporary table is created with a named constraint and the temporary table is created within the scope of a user-defined transaction, only one user at a time can execute the statement that creates the temp table. For example, if a stored procedure creates a temporary table with a name...
Indexes, including indexes on global temp tables, can be created online except for the following cases:XML index Index on a local temp table Initial unique clustered index on a view Disabled clustered indexes Clustered columnstore indexes in SQL Server 2017 (14.x)) and older versions Non...
CREATE TABLE ##test ( a INT, b INT ); INSERT INTO ##test VALUES (1, 1); -- Obtain object ID for temp table ##test SELECT OBJECT_ID('tempdb.dbo.##test') AS 'Object ID'; 結果集如下所示。 輸出 複製 1253579504 取得tempdb (2) 中指定物件識別碼 1253579504 的全域暫存資料表名稱...
CREATE TABLE ##test ( a INT, b INT ); INSERT INTO ##test VALUES (1, 1); -- Obtain object ID for temp table ##test SELECT OBJECT_ID('tempdb.dbo.##test') AS 'Object ID'; 結果集如下所示。 輸出 複製 1253579504 取得tempdb (2) 中指定物件識別碼 1...