source_column sysname 結果數據行所傳回之原始數據行的名稱。 如果無法判斷數據行,則傳回NULL。 只有在要求瀏覽資訊時才會填入。 is_identity_column bit 如果數據行是標識列,則傳回 1;如果不是,則傳回 0。 如果無法判斷數據行是標識列,則傳回NULL。 is_part_of_unique_ke...
is_hiddencolumn_ordinalnamesource_schemasource_tablesource_columnis_part_of_unique_key 0 1 b3 NULL NULL NULL NULL以下示例使用 1,指示它将返回信息,就好像它在查询中包含 FOR BROWSE 选项一样。SQL 复制 EXEC sp_describe_first_result_set N'SELECT b2 AS b3 FROM v', NULL, 1; ...
source_column sysname 此结果中的列返回的源列的名称。 如果无法确定该列,则返回 NULL。 仅在请求浏览信息时填充它。 is_identity_column bit 如果列是标识列,则返回 1;否则,返回 0。 如果无法确定列是否为标识列,则返回 NULL。 is_part_of_un...
`v` AS select 1 AS `a`,2 AS `b` character_set_client: latin1 collation_connection: latin1_swedish_ci 1. 2. 3. 4. 5. 6. 7. 8. 9. SHOW CREATE EVENTS – 显示已经创建的事件,创建时的语句 mysql> SHOW CREATE EVENT test.e_daily\G *** 1. row *** Event: e_daily sql_mode: ...
representing the steps taken by the SQL Server query processor as it executes each statement.Each statement reflected in the output contains a single row with the text of the statement,followed by several rows with the details of the execution steps. The table shows the column that the output ...
Specifies that positioned updates or deletes made through the cursor don't succeed if the row was updated since being read into the cursor. SQL Server doesn't lock rows as they're read into the cursor. Instead, it uses comparisons of timestamp column values, or a checksum value, if the...
案例 会话一 会话二 会话三 select sleep(1800),id from sbtest1 where id=1; 注:休眠1800秒后查询id=1的记录 alter table sbtest1...add column city varchar(30); 注:由于会话一未执行完,仍旧持有MDL...
(See "Consistency Check" in SQLSetDescRec.) HY090 Invalid string or buffer length (DM) *ValuePtr is a character string, and BufferLength was less than zero but was not equal to SQL_NTS. (DM) The driver was an ODBC 2*.x* driver, the descriptor was an ARD, the ColumnNumber ...
Binary string values are copied as is for bytes in the range0x20to0x7E, and using\xhexadecimal encoding for bytes outside that range. For example, if a duplicate-key error occurs for an attempt to insert0x41CF9Finto aVARBINARYunique column, the resulting error message uses UTF-8 with some...
@@FETCH_STATUS in nested loops @@ServerName returns wrong value in SQL SERVER 2008 ##TempTable and INSERT-SELECT FROM an existing Table with an IDENTITY column %rowtype equivalent in SQL server ++ operator in TSQL - bug or feature? 2 tables referencing each other using foreign key.is it ...