:Listvar 顯示目前所設定之指令碼變數的清單。 注意 只會顯示 sqlcmd 所設定的腳本變數,以及使用 命令設定的 :Setvar 變數。 輸出命令 :Error <filename> | STDERR | STDOUT 將所有錯誤輸出重新導向至 filename 所指定的檔案、stderr 或stdout。 在指令碼中,:Error 命令可以重複出現。 根據預設,錯誤輸出會傳送...
Anexpressionofnvarcharorvarchartype that is used as separator for concatenated strings. It can be literal or variable. <order_clause> Optionally specify order of concatenated results usingWITHIN GROUPclause: syntaxsql WITHINGROUP(ORDERBY<order_by_expression_list>[ASC|DESC] ) ...
It specifies a list of compiler flags as a comma-separated list of strings. PLSQL_NATIVE_C_COMPILER Parameter type String Syntax PLSQL_NATIVE_C_COMPILER = pathname Default value There is no default value. Parameter class Dynamic: ALTER SYSTEM Range of values Any valid path ...
column alias as variable Column Alias in Where clause Column already has a DEFAULT bound to it. Column is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause. Column is not a valid index to enforce a full-text search key. Why?
An array refers to a collection of an ordered list of items. Arrays are very useful and powerful. SQL Array Variable is discussed in this article.
Cause: The listed field was not found in the control file field list. The next error message lists the name of the data file where the error was found. Action: Check the listed field and fix it. Then retry the operation. SQL*Loader-00209: error processing the FIELD NAMES record in ...
此示例使用VARIABLE_COLUMN_LOG_PARSE函数在 Kinesis Data Analytics 中处理字符串列。VARIABLE_COLUMN_LOG_PARSE将输入字符串拆分为多个字段,它们由分隔符或分隔符字符串分隔。有关更多信息,请参阅Amazon Managed Service for Apache Flink SQL 参考中的VARIABLE_COLUMN_LOG_PARSE。
the basic form of SQL: SELECT[DISTICNT]target-listFROMrelation-listWHEREqualification 1. [DISTICNT]说明这个keyword是可选择的,写上之后,表明在查询的结果中不能包含重复的tuple 2.target-list即最终要查找的attribute(涉及到多个attribute,用逗号隔开) ...
If only a time value is assigned to a date data type variable,DATEDIFFsets the value of the missing date part to the default value:1900-01-01. If only a date value is assigned to a variable of a time or date data type,DATEDIFFsets the value of the missing time part to the default...
It can be literal or variable.<order_clause> Optionally specify order of concatenated results using WITHIN GROUP clause:syntaxsql העתק WITHIN GROUP ( ORDER BY <order_by_expression_list> [ ASC | DESC ] ) <order_by_expression_list>...