sql - What is the correct Select Statement for this? -


//this table 1

    transactionnum     type       65658               0       65659               0       65660              449       65661               0

//this table 2 

    type    description               445 discount #1       446 discount #2       447 discount #3       448 discount #4       449 discount #5       450 discount #6

//this script 

    select a.transactionnum,b.description table1 a,table2 b     a.type=b.type order transactionnum

//result 

    transactionnum   description     65659            discount #4

//i want result this, transactionnum 0 type should included in result, please me this, im using sql2000 here. 

    transactionnum      description        65658               0       65659               0       65660              discount #5       65661               0

use left join instead,

select a.transactionnum,         coalesce(b.description, cast (a.type varchar(20))) description   table1 left join table2 b           on a.type=b.type order  a.transactionnum

to further gain more knowledge joins, kindly visit link below:

output

╔════════════════╦═════════════╗ ║ transactionnum ║ description ║ ╠════════════════╬═════════════╣ ║          65658 ║ 0           ║ ║          65659 ║ 0           ║ ║          65660 ║ discount #5 ║ ║          65661 ║ 0           ║ ╚════════════════╩═════════════╝

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