what is the difference between mysql_fetch_object and mysql_fetch_array? : Sql dba
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does sql support programming? : Sql dba
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List the ways to get the count of records in a table?
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There are 5 records in a table and we have implemented two triggers that are :pre_query and post_query how many times these triggers will fire.
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What is the difference between UNIQUE CONSTRAINT and PRIMARY KEY? 1. There is no difference. 2. A PRIMARY KEY cannot be declared on multiple columns. 3. A UNIQUE CONSTRAINT cannot be declared on multiple columns. 4. A table can have multiple PRIMARY KEYS but only one UNIQUE CONSTRAINT. 5. A table can have multiple UNIQUE CONSTRAINTs but only one PRIMARY KEY.
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one of the column in my table contains the data like SAL ---- 1000 1000 2000 3000 3000 So my requirement is i want output like SAL --- 1000 2000 3000 it mean i want to delete duplicate rows in the table permanently and i want output in the above formatow should u write query?
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