There are at least a few possible reasons you might be getting the dreaded error 1064 (42000) that reads “You have an error in your SQL syntax…” etc when trying to use the MINUS operator in MariaDB.
I’ll explore these below and offer some solutions.
Continue readingIn MySQL, the UNION clause combines the results from multiple queries into a single result set.
Here are three examples of using SQL to find and select the row with the minimum value in a given column.
The examples work in most major RDBMSs, including MySQL, MariaDB, PostgreSQL, SQLite, Oracle, and SQL Server.
Continue readingIn MariaDB, SHOW TABLES is an administrative statement that lists the non-TEMPORARY tables, sequences and views in a given database.
In Oracle Database, the INTERSECT operator is used to create a compound query that returns the intersection of the results of the left and right SELECT statements. In other words, it combines two queries, but returns only those rows that are returned in both queries.
The following examples return duplicate rows from an Oracle Database table.
Continue readingIf you’re getting “ERROR: missing FROM-clause entry for table” in PostgreSQL when using an operator such as UNION, INTERSECT, or EXCEPT, it could be because you’re qualifying a column name with its table name.
To fix this, either remove the table name or use a column alias.
Continue readingIn Oracle Database, the MINUS operator is used to return only unique rows returned by the first query but not by the second.
Here are four options for returning rows that contain uppercase characters in Oracle Database.
Continue readingWhen using the UNION operator in PostgreSQL, if you encounter an error that reads “ERROR: each UNION query must have the same number of columns“, it’s because there’s a mismatch in the number of columns returned by the queries on either side of the UNION operator.
This error occurs when the number of columns returned by each SELECT statement is different.
The way to fix this is to ensure that both SELECT statements return the same number of columns.