SQL statement | description of connector usage, SQL statement

SQL statement | description of connector usage, SQL statement
I. | role

| Indicates splicing, such as 'A' | 'B' is equivalent to 'AB'

Ii. | example:

Generate select statements in batches

Select 'select * from' | tname | ';' from tab t where t. tname like't _ P _ % ';

For example:

Then you can copy these select statements to the document !!

Iii. Instances

| It is useful for many people who don't know. Let's take an instance for example:

How to disconnect all oracle users -- resolve ORA-01940: Unable to delete current connected users