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How to select first 10 elements from a MySQL database?
To select first 10 elements from a database using SQL ORDER BY clause with LIMIT 10.
The syntax is as follows
SELECT *FROM yourTableName ORDER BY yourIdColumnName LIMIT 10;
To understand the above syntax, let us create a table. The query to create a table is as follows
<span class="pln">mysql</span><span class="pun">></span><span class="pln"> create table </span><span class="typ">Clients</span><span class="pln"> </span><span class="pun">-</span><span class="pln"> </span><span class="pun">></span><span class="pln"> </span><span class="pun">(</span><span class="pln"> </span><span class="pun">-</span><span class="pln"> </span><span class="pun">></span><span class="pln"> </span><span class="typ">Client_Id</span><span class="pln"> </span><span class="kwd">int</span><span class="pln"> NOT NULL AUTO_INCREMENT PRIMARY KEY</span><span class="pun">,</span><span class="pln"> </span><span class="pun">-</span><span class="pln"> </span><span class="pun">></span><span class="pln"> </span><span class="typ">ClientName</span><span class="pln"> varchar</span><span class="pun">(</span><span class="lit">20</span><span class="pun">)</span><span class="pln"> </span><span class="pun">-</span><span class="pln"> </span><span class="pun">></span><span class="pln"> </span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">0</span><span class="pln"> rows affected </span><span class="pun">(</span><span class="lit">0.51</span><span class="pln"> sec</span><span class="pun">)</span>
Insert some records in the table using INSERT command.
The query is as follows
<span class="pln">mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'Larry'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.09</span><span class="pln"> sec</span><span class="pun">)</span><span class="pln"> mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'Sam'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.19</span><span class="pln"> sec</span><span class="pun">)</span><span class="pln"> mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'Bob'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.18</span><span class="pln"> sec</span><span class="pun">)</span><span class="pln"> mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'David'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.15</span><span class="pln"> sec</span><span class="pun">)</span><span class="pln"> mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'John'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.17</span><span class="pln"> sec</span><span class="pun">)</span><span class="pln"> mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'James'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.14</span><span class="pln"> sec</span><span class="pun">)</span><span class="pln"> mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'Robert'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.11</span><span class="pln"> sec</span><span class="pun">)</span><span class="pln"> mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'Carol'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.15</span><span class="pln"> sec</span><span class="pun">)</span><span class="pln"> mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'Mike'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.12</span><span class="pln"> sec</span><span class="pun">)</span><span class="pln"> mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'Maxwell'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.27</span><span class="pln"> sec</span><span class="pun">)</span><span class="pln"> mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'Chris'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.23</span><span class="pln"> sec</span><span class="pun">)</span><span class="pln"> mysql</span><span class="pun">></span><span class="pln"> insert </span><span class="kwd">into</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">(</span><span class="typ">ClientName</span><span class="pun">)</span><span class="pln"> values</span><span class="pun">(</span><span class="str">'Ramit'</span><span class="pun">);</span><span class="pln"> </span><span class="typ">Query</span><span class="pln"> OK</span><span class="pun">,</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> row affected </span><span class="pun">(</span><span class="lit">0.18</span><span class="pln"> sec</span><span class="pun">)</span>
Display all records from the table using SELECT statement.
The query is as follows
<span class="pln">mysql</span><span class="pun">></span><span class="pln"> </span><span class="kwd">select</span><span class="pln"> </span><span class="pun">*</span><span class="kwd">from</span><span class="pln"> </span><span class="typ">Clients</span><span class="pun">;</span>
The following is the output
+-----------+------------+ | Client_Id | ClientName | +-----------+------------+ | 1 | Larry | | 2 | Sam | | 3 | Bob | | 4 | David | | 5 | John | | 6 | James | | 7 | Robert | | 8 | Carol | | 9 | Mike | | 10 | Maxwell | | 11 | Chris | | 12 | Ramit | +-----------+------------+ 12 rows in set (0.00 sec)
Here is the query to select first 10 elements
<span class="pln">mysql</span><span class="pun">></span><span class="pln"> </span><span class="kwd">select</span><span class="pln"> </span><span class="pun">*</span><span class="kwd">from</span><span class="pln"> </span><span class="typ">Clients</span><span class="pln"> ORDER BY </span><span class="typ">Client_Id</span><span class="pln"> LIMIT </span><span class="lit">10</span><span class="pun">;</span>
The following is the output
+-----------+------------+ | Client_Id | ClientName | +-----------+------------+ | 1 | Larry | | 2 | Sam | | 3 | Bob | | 4 | David | | 5 | John | | 6 | James | | 7 | Robert | | 8 | Carol | | 9 | Mike | | 10 | Maxwell | +-----------+------------+ 10 rows in set (0.00 sec)
Here is the alternate query to select first 10 elements.
The query is as follows
<span class="pln">mysql</span><span class="pun">></span><span class="pln"> </span><span class="kwd">select</span><span class="pln"> </span><span class="pun">*</span><span class="kwd">from</span><span class="pln"> </span><span class="typ">Clients</span><span class="pln"> limit </span><span class="lit">0</span><span class="pun">,</span><span class="lit">10</span><span class="pun">;</span>
The following is the output
+-----------+------------+ | Client_Id | ClientName | +-----------+------------+ | 1 | Larry | | 2 | Sam | | 3 | Bob | | 4 | David | | 5 | John | | 6 | James | | 7 | Robert | | 8 | Carol | | 9 | Mike | | 10 | Maxwell | +-----------+------------+ 10 rows in set (0.00 sec)
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