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    <p>well you could try something along these lines:</p> <p>this is test setup:</p> <pre><code>mysql&gt; select * from table1; +------+------------+ | id | permission | +------+------------+ | a1 | 1, 2, 3, 4 | | v2 | 2, 3, 4 | +------+------------+ 2 rows in set (0.01 sec) mysql&gt; select * from table2; +------+------------+ | id | permission | +------+------------+ | 1 | Allow | | 2 | Not Allow | | 3 | Disabled | +------+------------+ 3 rows in set (0.01 sec) mysql&gt; select id, GROUP_CONCAT(t2perm) from (SELECT t1.*, t2.id as t2id, t2.permission as t2perm from table2 t2 cross join table1 t1) crs where INSTR(permission, t2id) &gt; 0 group by id; +------+--------------------------+ | id | GROUP_CONCAT(t2perm) | +------+--------------------------+ | a1 | Allow,Not Allow,Disabled | | v2 | Not Allow,Disabled | +------+--------------------------+ 2 rows in set (0.00 sec) </code></pre> <p>To explain a bit; first you cross join both tables and that should result in cartesian product, like so:</p> <pre><code>mysql&gt; SELECT * from table2 cross join table1; +------+------------+------+------------+ | id | permission | id | permission | +------+------------+------+------------+ | 1 | Allow | a1 | 1, 2, 3, 4 | | 1 | Allow | v2 | 2, 3, 4 | | 2 | Not Allow | a1 | 1, 2, 3, 4 | | 2 | Not Allow | v2 | 2, 3, 4 | | 3 | Disabled | a1 | 1, 2, 3, 4 | | 3 | Disabled | v2 | 2, 3, 4 | +------+------------+------+------------+ 6 rows in set (0.00 sec) </code></pre> <p>from that point, just select rows that have one string contained in another (INSTR(permission, t2id) => mapping permissions onto ids), you'll end up with this:</p> <pre><code>mysql&gt; select * from (SELECT t1.*, t2.id as t2id, t2.permission as t2perm from table2 t2 cross join table1 t1) crs where INSTR(permission, t2id) &gt; 0; +------+------------+------+-----------+ | id | permission | t2id | t2perm | +------+------------+------+-----------+ | a1 | 1, 2, 3, 4 | 1 | Allow | | a1 | 1, 2, 3, 4 | 2 | Not Allow | | v2 | 2, 3, 4 | 2 | Not Allow | | a1 | 1, 2, 3, 4 | 3 | Disabled | | v2 | 2, 3, 4 | 3 | Disabled | +------+------------+------+-----------+ 5 rows in set (0.00 sec) </code></pre> <p>now just aggregate results with GROUP_CONCAT...</p> <pre><code>select id, GROUP_CONCAT(t2perm) from (SELECT t1.*, t2.id as t2id, t2.permission as t2perm from table2 t2 cross join table1 t1) crs where INSTR(permission, t2id) &gt; 0 group by id; </code></pre>
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    1. POhow to replace text in cell to a data in another table in mysql
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    1. USIvica
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    1. CO@Ivica, what does `crs` mean?
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      1. USPraveen Kumar Purushothaman
    2. COYou are welcome :) @Praveen crs is just an alias that we give to our sub-select (derived table) so we can use it... (Every derived table must have its own alias)
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    3. CO@Ivica so we can use `as` before `crs` right?
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      1. USPraveen Kumar Purushothaman
 

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