1)数据类型 2)变量声明、赋值与引用 3)函数与操作符 字符串 日期 空值判断与处理 转换 语句 4)cursor 5)trigger 6)procedure 7)数据字典/系统表 8)SQL 9)全局变量 10)命令行查询工具 ISQL SQL PLUS 读取、执行SQL文件 Isql –Usa –Ppass –Shost –ifile sqlplus [-s] user/pass@db -@filename 11...
Column name 'Product Description' in table 'Tab' is specified more than once. Column, parameter, or variable #2: Cannot find data type test_type. Combining conditional COUNTs in one GROUP BY query Commenting out an SQL Line when using Dynamic SQL Common table expression defined but not used...
Additional options relative to the section on conditional WHERE clause without using a Dynamic Query The COALESCE function can be used in a similar fashion as you are describing how to use the LIKE ISNULL() combination: WHERE ... AND column = COALESCE(@param, column) ... As COALESCE return...
ISNULL NVL(para,0)REPLACE(old_string,NULL,my_string) 转换 字符-日期 字符-日期、数值数值 其它 TSQL Convert(datetime,expr,style)Convert(char(n),expr,style) PL/SQL To_Date(format,expr)To_char(expr,format)To_Number() TSQL TSQL PL/SQL 语句 statementblock TSQLBEGIN...END BEGIN...END; PL...
SQL Server TSQL Pivot with Multiple ColumnsAs far as I know, you cannot use thePIVOTsyntax to ...
Column name 'Product Description' in table 'Tab' is specified more than once. Column, parameter, or variable #2: Cannot find data type test_type. Combining conditional COUNTs in one GROUP BY query Commenting out an SQL Line when using Dynamic SQL Common table expression defined but not used...
I think I spotted a small error in sprocs ProductSearch6 and ProductSearch7 when a search parameter is not Null, and you are using the LIKE operator. You should add '%' before and after the parameter, because you are searching for the value anywhere within the relevant database column....
Isnull(para,0) NVL(para,0) 转换 TSQL PL/SQL 字符->日期 Convert(datetime, expr, style) To_Date(format, expr) 字符<-日期、数值 Convert(char(n), expr, style) To_char(expr,format) 数值 To_Number() 4)语句 TSQL PL/SQL statement block ...
()SYSDATE数值TSQLPL/SQL空值判断与处理TSQLPL/SQL判断IS NULLIS NULL空值替换Isnull(para,0)NVL(para,0)REPLACE(old_string, NULL, my_string) 转换TSQLPL/SQL字符->日期Convert(datetime, expr, style)To_Date(format, expr)字符<-日期、数值Convert(char(n), expr, style)To_char(expr,format)数值To_...
Column name 'Product Description' in table 'Tab' is specified more than once. Column, parameter, or variable #2: Cannot find data type test_type. Combining conditional COUNTs in one GROUP BY query Commenting out an SQL Line when using Dynamic SQL Common table expression defined but not used...