![]() Sqlite> SELECT C.ID AS COMPANY_ID, C.NAME AS COMPANY_NAME, C.AGE, D. Return value The count () returns the number of all rows in a group, and count (columnname) return the number of non-null values of the columnname column in a group. A column name or representing all columns. The above SQLite statement will produce the following result −Ĭonsider an example for the usage of COLUMN ALIAS where COMPANY_ID is an alias of ID column and COMPANY_NAME is an alias of name column. Here is the syntax of the SQLite count () function: count(expr) Parameters expr Required. Sqlite> SELECT C.ID, C.NAME, C.AGE, D.DEPT Now, following is the usage of TABLE ALIAS where we use C and D as aliases for COMPANY and DEPARTMENT tables respectively − (b) Another table is DEPARTMENT as follows − ![]() Syntaxįollowing is the basic syntax of table alias.įollowing is the basic syntax of column alias.Ĭonsider the following two tables, (a) COMPANY table is as follows − This makes for much easier reading in some frameworks, for example, i'm using Exponent's (React Native) Sqlite integration, and without the AS statement, the code is pretty ugly. The column aliases are used to rename a table's columns for the purpose of a particular SQLite query. Extension of VolkerK's answer, to make code a little more readable, you can use AS to reference the count, example below: SELECT COUNT() AS c from profile. Renaming is a temporary change and the actual table name does not change in the database. ![]() The use of table aliases means to rename a table in a particular SQLite statement. You can rename a table or a column temporarily by giving another name, which is known as ALIAS. ![]()
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