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oracle| Tips Author: Liu Yingbo Collection and finishing Time: April 29, 2004 Reprint please indicate the source, thank you! 1. Find Useless index: DML performance is low, one of the most serious reasons is the existence of useless indexes. All

1.1.1. ERROR 1665 (HY000) "Environment description" msyql5.6.14 "Error Message" Error executing SQL statement: ERROR 1665 (HY000): Cannot executestatement:impossible to write to binary log since Binlog_format = Statementand at least One table

1, the creation of Excel forms, require a table in more than one table has text, and text with pinyin. 2. Refer to "How to annotate the text in Excel form (same form)" This experience adds pinyin to the text in the table. 3, for the

oracle| Tips 1. Find Useless index: 　　 DML performance is low, one of the most serious reasons is the existence of useless indexes. All SQL inserts, updates, and deletions become slower when they need to modify a large number of indexes when each