Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Database Articles
Page 349 of 547
ERROR 1064 (42000): You have an error in your SQL syntax at zero fill column?
Following is the error and it occurs when you implement ZEROFILL incorrectly−mysql> create table DemoTable -> ( -> StudentCode int(10) NOT NULL ZEROFILL AUTO_INCREMENT PRIMARY KEY -> ); ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'ZEROFILL AUTO_INCREMENT PRIMARY KEY )' at line 3For correct implementation, use the below syntax −SyntaxyourColumnName int(10) ZEROFILL NOT NULL AUTO_INCREMENT PRIMARY KEYLet us first create a table −mysql> create table DemoTable -> ( -> StudentCode int(10) ZEROFILL NOT NULL ...
Read MoreFind integer in text data (comma separated values) with MySQL?
Let us first create a table −mysql> create table DemoTable -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> DoubleValue varchar(20) -> ); Query OK, 0 rows affected (0.58 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(DoubleValue) values('80.2, 90.5, 88.90'); Query OK, 1 row affected (0.44 sec) mysql> insert into DemoTable(DoubleValue) values('78.56, 45.80, 88, 45.6'); Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable(DoubleValue) values('12.34, 90.06, 89.90'); Query OK, 1 row affected (0.11 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will ...
Read MoreHow to sum a comma separated string (string with numbers) in MySQL?
You can create a custom function to sum a comma-separated string in MySQL. Let us first create a table. Here, we have a varchar column, wherein we will add numbers in the form of strings −mysql> create table DemoTable -> ( -> ListOfValues varchar(50) -> ); Query OK, 0 rows affected (0.56 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('20, 10, 40, 50, 60'); Query OK, 1 row affected (0.14 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+----------------+ | ListOfValues ...
Read MoreGet boolean result whether table exists or not using CASE WHEN in MySQL
For this, you can use INFORMATION_SCHEMA.TABLES and find the table you want to search. Let us first create a table −mysql> create table DemoTable -> ( -> Id int, -> Name varchar(20) -> ); Query OK, 0 rows affected (1.57 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(101, 'Chris'); Query OK, 1 row affected (0.71 sec) mysql> insert into DemoTable values(102, 'David'); Query OK, 1 row affected (0.20 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+------+-------+ | Id ...
Read MoreConcatenate columns from different tables in MySQL
You can use CONCAT(). Let us first create a table −mysql> create table DemoTable1 -> ( -> FirstName varchar(20) -> ); Query OK, 0 rows affected (0.90 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1 values('Chris'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable1 values('David'); Query OK, 1 row affected (0.12 sec)Display all records from the table using select statement −mysql> select *from DemoTable1;This will produce the following output −+-----------+ | FirstName | +-----------+ | Chris | | David | +-----------+ 2 rows in set ...
Read MoreHow to select a field corresponding to the field in which MAX() exists?
For this, you can use sub query along with aggregate function MAX(). Let us first create a table −mysql> create table DemoTable -> ( -> ProductId int, -> ProductAmount int -> ); Query OK, 0 rows affected (0.78 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(1001, 7895); Query OK, 1 row affected (0.32 sec) mysql> insert into DemoTable values(1003, 8903); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(1010, 7690); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values(2010, 8450); Query OK, 1 row ...
Read MoreAdd an autoincrement column with a custom start value in MySQL
To add a new column to an already created table, use ALTER TABLE and ADD COLUMN. Use AUTO_INCREMENT to set auto increment custom value.Let us first create a table −mysql> create table DemoTable -> ( -> StudentName varchar(20) -> ); Query OK, 0 rows affected (0.63 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Robert'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('Adam'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('Mike'); Query OK, 1 row affected (0.12 sec)Display all records from the table using ...
Read MoreMySQL query error with a table named "order"?
The order is a reserved word. To still use a reserved word, you need to use backticks around the column name. Let us first create a table −mysql> create table `order` -> ( -> StudentId int -> ); Query OK, 0 rows affected (1.78 sec)Insert some records in the table using insert command −mysql> insert into `order` values(101); Query OK, 1 row affected (0.26 sec) mysql> insert into `order` values(210); Query OK, 1 row affected (0.18 sec) mysql> insert into `order` values(190); Query OK, 1 row affected (0.28 sec) mysql> insert into `order` values(180); Query OK, 1 ...
Read MoreShow row with zero value after addition in MySQL?
For this, you can use an aggregate function SUM() along with the condition. Let us first create a table −mysql> create table DemoTable -> ( -> Status varchar(20) -> ); Query OK, 0 rows affected (1.22 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('active'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values('active'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('active'); Query OK, 1 row affected (0.30 sec) mysql> insert into DemoTable values('active'); Query OK, 1 row affected (0.18 sec)Display all records from the ...
Read MoreFind rows with a match in a pipe delimited column with MySQL
To find a match, use regular expressions in MySQL. Let us first create a table −mysql> create table DemoTable -> ( -> Value varchar(60) -> ); Query OK, 0 rows affected (0.48 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('8|56|78|45'); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable values('9876'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values('98|8'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values('3|8|9'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('97|94'); Query OK, 1 ...
Read More