May 16, 2021 SQLite
SQLite's GLOB operator is the text value used to match the pattern specified by the wildcard. I f the search expression matches the pattern expression, the GLOB operator returns true, which is 1. Unlike the LIKE operator, GLOB is case-sensitive and follows the unIX syntax for the wildcard below.
Asterisks
Question mark (?)
An asterisk represents zero, one or more numbers, or characters. T he question mark (?) represents a single number or character. These symbols can be combined.
:: And ? The basic syntax is as follows:
SELECT FROM table_name WHERE column GLOB 'XXXX*' or SELECT FROM table_name WHERE column GLOB '*XXXX*' or SELECT FROM table_name WHERE column GLOB 'XXXX?' or SELECT FROM table_name WHERE column GLOB '?XXXX' or SELECT FROM table_name WHERE column GLOB '?XXXX?' or SELECT FROM table_name WHERE column GLOB '????'
You can use the AND or OR operator to combine N conditions. Here, XXXX can be any number or string value.
Here are some examples that demonstrate the difference between the GLOB clauses with the ' and '?' operators:
| Statement | describe |
|---|---|
| WHERE SALARY GLOB '200*' | Find any value starting with 200 |
| WHERE SALARY GLOB '*200*' | Find any position containing arbitrary value of 200 |
| WHERE SALARY GLOB '?00*' | Find any value of the second and third digits 00 |
| WHERE SALARY GLOB '2??' | Find any value starting with 2 starts and at least 3 characters length |
| WHERE SALARY GLOB '*2' | Find any value ended with 2 |
| WHERE SALARY GLOB '?2*3' | Find the second bit of 2, and any value ended at 3 |
| WHERE SALARY GLOB '2???3' | The lookup length is 5 digits, and at any value ends at 3 out of 2 |
Let's take a practical example, assuming that the COMPANY table has the following records:
ID NAME AGE ADDRESS SALARY ---------- ---------- ---------- ---------- ---------- 1 Paul 32 California 20000.0 2 Allen 25 Texas 15000.0 3 Teddy 23 Norway 20000.0 4 Mark 25 Rich-Mond 65000.0 5 David 27 Texas 85000.0 6 Kim 22 South-Hall 45000.0 7 James 24 Houston 10000.0
Here's an example that shows all records in the COMPANY table that AGE starts with 2:
sqlite> SELECT * FROM COMPANY WHERE AGE GLOB '2*';
This results in the following:
ID NAME AGE ADDRESS SALARY ---------- ---------- ---------- ---------- ---------- 2 Allen 25 Texas 15000.0 3 Teddy 23 Norway 20000.0 4 Mark 25 Rich-Mond 65000.0 5 David 27 Texas 85000.0 6 Kim 22 South-Hall 45000.0 7 James 24 Houston 10000.0
Here's an example that shows all records in the ADDRESS text in the COMPANY table that contain a hyphen (-):
sqlite> SELECT * FROM COMPANY WHERE ADDRESS GLOB '*-*';
This results in the following:
ID NAME AGE ADDRESS SALARY ---------- ---------- ---------- ---------- ---------- 4 Mark 25 Rich-Mond 65000.0 6 Kim 22 South-Hall 45000.0