The Oracle/PLSQL CASE statement has the functionality of an IF-THEN-ELSE statement. Starting in Oracle 9i, you can use the CASE statement within a SQL statement. Syntax The syntax for the CASE statement in Oracle/PLSQL is: CASE [ expression ] WHEN condition_1 THEN result_1 WHEN condition...
Oracle CASE expression syntax is similar to an IF-THEN-ELSE statement. Oracle checks each condition starting from the first condition (left to right). When a particular condition is satisfied (WHEN part) the expression returns the tagged value (THEN part). If none of the conditions are matched...
CASE expression syntax is similar to an IF-THEN-ELSE statement. Oracle checks each condition starting from the first condition (left to right). When a particular condition is satisfied (WHEN part) the expression returns the tagged value (THEN part). If none of the conditions are matched, the...
CASE e WHEN e1 THEN r1 WHEN e2 THEN r2 WHEN en THEN rn [ ELSE r_else ]ENDCode language:SQL (Structured Query Language)(sql) In this syntax, Oracle compares the input expression (e) to each comparison expression e1, e2, …, en. ...
After each stage of execution, the cursor retains enough information about the SQL statement to re-execute the statement without starting over, as long as no other SQL statement has been associated with that cursor. This is illustrated in Figure 7-1. Notice that the statement can be re-...
日期和时间数据类型 DATE 有Datetime和Smalldatetime两种 在oracle里面格式为DMY在SQLSerser里面可以调节,默认的为MDY 数字类型 NUMBER(P,S) NUMERIC[P(,S)] Oracle里面p代表小数点左面的位数,s代表小数点右面的位数。而SQLServer里面p代表小数点左右两面的位数之和,s代表小数点右面的位数。
4 convert-sql-statement ConvertSQLReport<n>.XML 5 synchronize-target TargetSynchronizationReport<n>.XML 6 refresh-from-database SourceDBRefreshReport<n>.XML 重要 輸出報表與評量報表不同。 前者是已執行命令效能的報表,而後者則是供程式設計取用的 XML 報表。 如需輸出報表的命令選項 (從上述 Sl 第 2...
SQLCL [[option] [logon | / NOLOG] [start]] where option has the following syntax: -H[ELP] | -V[ERSION] | [ [-C[OMPATIBILITY] x.y[.z]]] [-L[OGON]] [-NOLOGINTIME] [-R[ESTRICT] {1 | 2 | 3}] [-S[ILENT]] [-AC]] where logon has the following syntax: {usern...
Enter the text of the SQL query in SQL command. Click Browse to load the SQL query from a text file. Click Parse query to verify the syntax of the query text.Table 5: Data access modes for the Oracle sourceFigure 22: Connection Manager page of the Oracle Source dialog box, configured ...
SQL>conn scott/tiger Connected. 1. 2. 选择所有列 SQL>select*fromdept;DEPTNO DNAME LOC--- --- ---10ACCOUNTING NEW YORK20RESEARCH DALLAS30SALES CHICAGO40OPERATIONS BOSTON 1. 2. 3. 4. 5. 6. 7. 8. 选择指定列 SQL>selectdeptno,dnamefromdept;DEPTNO DNAME--- ---10ACCOUNTING20RESEARCH...