SQL有关的字符串拼接

1.字符串与某一查询栏位简单的拼接：

Select 'KS3F' || a.Line_Name as Line_Name
  From Sfis1.c_Line_Desc_t a
 Where a.Line_Name Like '3SMT%'

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2.字符串与某一查询栏位的截取拼接：

Select 'KS3F' || substr(a.Line_Name, 2, 4) as Line_Name
  From Sfis1.c_Line_Desc_t a
 Where a.Line_Name Like '3SMT%'

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3.字符串与某一查询栏位的截取去空拼接：

Select 'KS3F' || trim(substr(a.Line_Name, 2, 8)) as Line_Name
  From Sfis1.c_Line_Desc_t a
 Where a.Line_Name Like '3SMT%'

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