SELECT
The syntax of a complete analysis statement is as follows:
| 1 2 3 4 | SELECT [DISTINCT] (* | expression) [AS alias] [, ...] [GROUP BY expression [, ...] [HAVING predicates]] [ORDER BY expression [ASC | DESC] [, ...]] [LIMIT size OFFSET offset] | 
SELECT indicates the field to be queried. The following part describes parameters and examples for the SELECT syntax.
Using * to query all fields.
| 1 | SELECT * | 
| account_number | firstname | gender | city | balance | employer | state | lastname | age | 
|---|---|---|---|---|---|---|---|---|
| 1 | Amber | M | Brogan | 39225 | Pyrami | IL | Duke | 32 | 
| 16 | Hattie | M | Dante | 5686 | Netagy | TN | Bond | 36 | 
| 13 | Nanette | F | Nogal | 32838 | Quility | VA | Bates | 28 | 
| 18 | Dale | M | Orick | 4180 | null | MD | Adams | 32 | 
Querying a Specified Field
| 1 | SELECT firstname, lastname | 
| firstname | lastname | 
|---|---|
| Amber | Duke | 
| Hattie | Bond | 
| Nanette | Bates | 
| Dale | Adams | 
Using AS to Define Field Aliases
| 1 | SELECT account_number AS num | 
| num | 
|---|
| 1 | 
| 16 | 
| 13 | 
| 18 | 
Using the DISTINCT Statement
| 1 | SELECT DISTINCT age | 
| age | 
|---|
| 32 | 
| 36 | 
| 28 | 
Using SQL Functions
For details about functions, see Functions.
| 1 | SELECT LENGTH(firstname) as len, firstname | 
| len | firstname | 
|---|---|
| 4 | Amber | 
| 6 | Hattie | 
| 7 | Nanette | 
| 4 | Dale | 
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