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I want do an update on a column(lines table) but the data to be updated exists in two other tables<br />
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update lines set a=(select b||'-'||c from hdr, lines where hdr.id=line.id and a is null) where a is null but how to join lines with this select statement,<br />
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Thanks
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I want do an update on a column(lines table) but the data to be updated exists in two other tables

update lines set a=(select b||'-'||c from hdr, lines where hdr.id=line.id and a is null) where a is null but how to join lines with this select statement,

Thanks

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