WHERE conditions can be combined with AND, OR, and NOT. These logical conditions always return true or false. A WHERE with AND requires that two conditions are true. A WHERE with OR requires that one of two conditions is true. A WHERE with NOT negates the specified condition....
WHERE condition1 AND condition2 ... AND condition_n; Parameters or Arguments condition1, condition2, ... condition_n Multiple conditions that will be tested for each record. All conditions must be met to be included in the result set. ...
SELECTid,...,creator,modifier,create_time,update_timeFROMstatementWHERE(account_number='XXX'ANDcreate_time>='2022-04-24 06:03:44'ANDcreate_time<='2022-04-24 08:03:44'ANDdc_flag='C')ORDERBYcreate_timeDESC,idDESCLIMIT0,1000; 优化后:执行总行数为:6 行,耗时 34ms。 MySQL使不使用索引与...
Logical conditions using AND,OR and NOT operatorsRules of precedence for operators in an expression Sorting rows using the ORDER BY clause Substitution variables DEFINE and VERIFY commands 1、Restrict 限制(Where-condition)The essential capabilities of SELECT statement are Selection, Projection and Joining...
SQL logical operators allow you to filter results using several conditions at once. Start Now Lesson 7 SQL LIKE An introduction to the LIKE operator, which matches similar values. Start Now Lesson 8 SQL IN Use the SQL IN operator in the WHERE clause to filter data by a list of values. ...
WHERE First_Name = 'Mary'; Note:SQL is not only used for manipulating data, but also for creating and altering the design of database objects, such as tables. The part of SQL that is used for creating and altering database objects is called data-definition language (DDL). Th...
SELECT * FROM geeksforgeeks WHERE name!='Harsh'; 输出: SQL NOT 运算符对于字符串 在上图中,我们可以看到显示了所有名称不等于“Harsh”的行。 Note: The NOT EQUAL comparison is case-sensitive for strings. Meaning “geeks” and “GEEKS” are two different strings for NOT EQUAL operator. 示例2:...
we tell SQL to perform a join between the actor and the film_actor tables based on the actor_id column. We also perform a join between the film_actor and the film tables using the film_id column. We also ensure to define two conditions using the WHERE clause to filter the result table...
The sections that follow describe the various forms of conditions. You must use appropriate condition syntax wheneverconditionappears in SQL statements. You can use a condition in theWHEREclause of these statements: DELETE SELECT UPDATE You can use a condition in any of these clauses of theSELECT...
SELECTq.query_id, qt.query_sql_textFROMsys.query_store_query_text qtINNERJOINsys.query_store_query qONqt.query_text_id = q.query_text_idWHEREquery_sql_textlikeN'%ORDER BY ListingPrice DESC%'ANDquery_sql_textnotlikeN'%query...