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Sql: *JoinRef [message #34744]

Fri, 09 December 2011 14:14

mirek is currently offline

mirek
Messages: 13980
Registered: November 2005

Ultimate Member

It took some time and effort, but SqlExp is now able to create join conditions based on .sch file REFERENCES and PRIMARY_KEY attributes:

Select(ID(ID, NAME, LASTNAME))
.From(TABLE1).LeftJoinRef(TABLE2)
.Where(BDATE == Date(2011, 12, 9))

produces

select ID.ID, ID.NAME, ID.LASTNAME
 from TABLE1 left outer join TABLE2 on TABLE2.TABLE1_ID = TABLE1.NAME
 where BDATE = date '2011-12-09'

it is also possible to use On clause anyway - it gets combined with 'and':

Select(ID(ID, NAME, LASTNAME))
.From(TABLE1).LeftJoinRef(TABLE2).On(IsNull(BDATE))
.Where(BDATE == Date(2011, 12, 9))

select ID.ID, ID.NAME, ID.LASTNAME
 from TABLE1 left outer join TABLE2 on TABLE2.TABLE1_ID = TABLE1.NAME and BDATE is NULL
 where BDATE = date '2011-12-09'

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[Message index]

		Sql: *JoinRef By: mirek on Fri, 09 December 2011 14:14
		Re: Sql: *JoinRef By: Didier on Thu, 22 December 2011 00:22
		Re: Sql: *JoinRef By: mirek on Thu, 22 December 2011 08:17
		Re: Sql: *JoinRef By: Didier on Thu, 22 December 2011 17:26
		Re: Sql: *JoinRef By: Didier on Thu, 22 December 2011 23:10
		Re: Sql: *JoinRef By: mirek on Fri, 23 December 2011 08:40
		Re: Sql: *JoinRef By: mirek on Fri, 23 December 2011 08:48
		Re: Sql: *JoinRef By: Didier on Fri, 23 December 2011 17:24
		Re: Sql: *JoinRef By: mirek on Fri, 23 December 2011 17:26
		Re: Sql: *JoinRef By: mirek on Fri, 10 February 2012 19:12
		Re: Sql: *JoinRef By: Didier on Sat, 11 February 2012 09:31

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