About the writing method of SQL field "this includes" and "included in" strings

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1、 Field lookup table values “ This includes ” Method a string of all records

If there is one in the table name site , Inquire about name This includes “ Joe – Smith. ” All records . Be able to write sql：

Stirng strsql=”SELECT * FROM Table name WHERE name LIKE ’%”+” Zhang San ”+”%’”;

2、 Query the value of a field “ Included in ” The method of all records of a string

Suppose the query table name Fields are included in the string “ Zhang San is a good student ” All the records of , Can write like this sql：

String strsql=”SELECT * FROM Table name WHERE INSTR(’ Zhang San is a good student ’,name)>0″;

You can check . In record name The field value contains ： Zhang 、 3、 ... and 、 yes 、 individual 、 good 、 learn 、 raw 、 Zhang San 、…… All records .

Be careful ： above sql Please read the half width full angle symbol carefully .

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