mysql - SQL - Inserting data based on multiple criteria -


i'm trying insert number of rows different data based on data in table.

scenario:

i have columns tbl1_action , tbl1_actiondate. want search in tbl2 data in tbl2_reviewdate , tbl2_destroydate. if there data in tbl2_reviewdate need tbl1_action = 'review' , tbl1_actiondate = tbl2_reviewdate. if there data in tbl2_destroydate need another row tbl1_action = 'destroy' , tbl1_actiondate = tbl2_destroydate.

so summarise possible scenarios:

if tbl2_reviewdate null ,    tbl2_destroydate null

insert 1 record tbl1 action , actiondate = null

   tbl2_reviewdate not null ,    tbl2_destroydate null insert 1 row tbl1_action = 'review' , tbl1_actiondate = tbl2_reviewdate     tbl2_ null ,    tbl2_destroydate not null insert 1 row tbl1_action = 'destroy' , tbl1_actiondate = tbl2_destroydate     tbl2_reviewdate not null ,    tbl2_destroydate not null insert 2 rows; 1 tbl1_action = 'destroy' , tbl1_actiondate = tbl2_destroydate , 1 tbl1_action = 'review' , tbl1_actiondate = tbl2_reviewdate.

is possible in 1 script? what's best way it?

thanks help

i think want this:

insert table1(action, date)     select 'review', actiondate     tbl2     tbl2.reviewdate not null     union     select 'destroy', destroydate     tbl2     tbl2.destroydate not null;

you 2 separate insert statements.


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