The following MySQL query returns only those rows that have numeric values in a given column.
MySQL
Fix “ERROR 1136 (21S01): Column count doesn’t match value count at row 2” when using the VALUES Statement in MySQL
If you’re getting an error that reads something like “ERROR 1136 (21S01): Column count doesn’t match value count at row 2” when using the VALUES statement in MySQL, it’s probably because there’s a mismatch in the number of columns specified in the ROW() clauses.
To fix this error, be sure that all ROW() clauses contain exactly the same number of columns.
3 Ways to Find Rows that Contain Uppercase Letters in MySQL
Here are three options for returning rows that contain uppercase characters in MySQL.
Fix “ERROR 1250 (42000): Table ‘…’ from one of the SELECTs cannot be used in global ORDER clause” when using UNION in MySQL
If you’re getting an error that reads “ERROR 1250 (42000): Table ‘…’ from one of the SELECTs cannot be used in global ORDER clause” when using the UNION clause in a MySQL query, it’s probably because you’re qualifying a column name with its table name.
This doesn’t work in MySQL.
To fix this issue, either remove the table name or use a column alias.
4 Ways to List All Tables in a MySQL Database
Below are four ways to list out the tables in a MySQL database using SQL or the command line.
Fix “ERROR 1054 (42S22): Unknown column ‘…’ in ‘order clause'” when using UNION in MySQL
If you’re getting error “1054 (42S22): Unknown column ‘…’ in ‘order clause'” when using the UNION clause in MySQL, it could be because you’re trying to reference an aliased column by its column name.
Fix “ERROR 1136 (21S01): Column count doesn’t match value count at row 1” when Inserting Data in MySQL
One of the more common error message in MySQL goes like this: “ERROR 1136 (21S01): Column count doesn’t match value count at row 1“.
This error typically occurs when you’re trying to insert data into a table, but the number of columns that you’re trying to insert don’t match the number of columns in the table.
In other words, you’re either trying to insert too many columns, or not enough columns.
7 Ways to Find Duplicate Rows while Ignoring the Primary Key in MySQL
Here are seven ways to return duplicate rows in MySQL when those rows have a primary key or other unique identifier column.
MySQL TABLE Statement
In MySQL, the TABLE statement returns rows and columns of the given table.
The TABLE statement is similar to the SELECT statement, and it can be used as a kind of shorthand version of the SELECT statement.
The TABLE statement was introduced in MySQL 8.0.19.