MySQL or statement usage example, mysqlor statement example

MySQL or statement usage example, mysqlor statement example

1. Usage of or syntax in mysql. Note the usage of or in mysql syntax. An error occurred while querying the reward data !!!

$sql = 'SELECT         *       FROM         `vvt_spread_doubleegg_exchange_award` AS p      WHERE        p.`act_type` = 4 or p.`act_type` = 5      AND        p.`user_id` = ' .$user_id      ;

The or syntax in SQL is generally used for queries with multiple conditions. The preceding syntax query is equivalent to the data set queried by two SQL statements.

 $sql = 'SELECT * FROM `vvt_spread_doubleegg_exchange_award` AS p WHERE p.`act_type` = 4; $sql = 'SELECT * FROM `vvt_spread_doubleegg_exchange_award` AS p WHERE p.`act_type` = 5 AND p.`user_id` = ' .$user_id;

2. to query data sets with act_type = 4 and user_id = 11123 or equal to p. 'Act _ type' = 5 and user_id = 11123 or both conditions, add ().

$sql = 'SELECT         *       FROM         `vvt_spread_doubleegg_exchange_award` AS p      WHERE        （p.`act_type` = 4 or p.`act_type` = 5）      AND        p.`user_id` = ' .$user_id      ;

Summary

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