How to get substring in SQLIte?
To get the substring in SQLite
You can use the builtin function in SQLite which is substr(X,Y,Z)
. The x field represents the string input to be sliced, the y field represents the starting point using an index, and the z field represents the substring length.
===============================
|Database Table : **articles**|
===============================
|id | description |
-------------------------------
|29 | Lorem ipsum domit |
===============================
Now we will try to make a select query for our description
SELECT substr(description,1,4) FROM articles where id='29';
Output would be: Lore instead of Lorem ipsum domit
Use the substr
function.
From the list of core functions:
substr(X,Y,Z) substr(X,Y) substring(X,Y,Z) substring(X,Y)
The
substr(X,Y,Z)
function returns a substring of input stringX
that begins with theY-th
character and which isZ
characters long. IfZ
is omitted thensubstr(X,Y)
returns all characters through the end of the stringX
beginning with theY-th
. The left-most character ofX
is number 1. IfY
is negative then the first character of the substring is found by counting from the right rather than the left. IfZ
is negative then theabs(Z)
characters preceding theY-th
character are returned. IfX
is a string then characters indices refer to actual UTF-8 characters. IfX
is a BLOB then the indices refer to bytes.
substring()
is an alias forsubstr()
beginning with SQLite version 3.34.