MySQL

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Using PHP-MySQL Persistent Connections to Run WordPress Blog

When connecting to MySQL database, WordPress weblog based on PHP scripting will use non-persistent connection by default. That [...]

By |2020-07-17T04:50:16-07:00Modified: July 17, 2020September 14th, 2007|Categories: Web Publishing|Tags: , , , |9 Comments

MySQL Error 1170 (42000): BLOB/TEXT Column Used in Key Specification Without a Key Length

When creating a new table or altering an existing table with primary keys, unique constraints and indexes, or [...]

By |2020-05-15T01:39:18-07:00Modified: May 15, 2020July 9th, 2007|Categories: Databases|Tags: |20 Comments

Remove or Trim First or Last Few Characters in MySQL Database with SQL

Another useful string function in MySQL database is TRIM() which will return a text string after removing the [...]

By |2020-09-05T21:48:50-07:00Modified: September 5, 2020April 23rd, 2007|Categories: Databases|Tags: , , |7 Comments

Duplicate, Copy or Backup Tables in MySQL, MariaDB, Oracle, PostgreSQL, DB2 and SQLite with Create Table As SQL

In Oracle, PostgreSQL, DB2, MySQL, MariaDB and SQLite database system, there is a nice command feature called Create [...]

By |2020-06-12T04:46:42-07:00Modified: June 12, 2020March 18th, 2007|Categories: Databases|Tags: , , , |8 Comments
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