DB2 common dummies 1000 questions (6)

The db2 Tutorial we are reading is: DB2 common dummies 1000 (6 ). 149. ATAN2 ()
Returns the arc tangent of the angle X and Y coordinates in radians.
SELECTATAN2 (0.5, 0.9) FROMBSEMPMS;
　　
150. BIGINT ()
Returns the 64-bit integer representation of a number or string in an integer constant.
SELECTBIGINT (EMP_NO) FROMBSEMPMS;
　　
151. CEILING () ORCEIL ()
Returns the smallest integer value greater than or equal to the parameter.
SELECTCEILING (3.56) FROMBSEMPMS;
SELECTCEIL (4.67) FROMBSEMPMS;
　　
152. CHAR ()
Returns the string representation of the datetime type, String, integer, decimal or double-precision floating point number.
SELECTCHAR (SALARY, ',') FROMBSEMPMS;
　　
153. CHR ()
Returns the characters with the specified ASCII code.
SELECTCHAR (167) FROMBSEMPMS;
154. CONCAT ()
Returns the connection of two strings.
SELECTCONCAT (EMP_NO, EMP_NAM) FROMBSEMPMS;
　　
155. YEAR ()
Returns the year of the value.
SELECTYEAR ('2014/1/02 ') FROMBSEMPMS;
　　
156. VARCHAR ()
Returns the string, date type, and variable-length string representation of the graphic string.
SELECTVARCHAR (EMP_NAM, 50) FROMBSEMPMS;
　　
157. UCASE () ORUPPER ()
Returns the string in uppercase.
SELECTUCASE (EMP_NAM) FROMBSEMPMS;
SELECTUPPER (EMP_NO) FROMBSEMPMS;

158. TRUNCATE () ORTRUNC ()
This value is truncated from the right of the decimal point in the expression and returned.
SELECTTRUNCATE (345.6789, 2) FROMBSEMPMS;
　　
159. TIME ()
Returns the time in a value.
SELECTTIME ('2017-03-19.12.30.123456 ') FROMBSEMPMS;
　　
160. SUBSTR (EXP1, EXP2)
Returns the substring of the EXP1 string starting with EXP2.
SELECTSUBSTR ('cdnjfdjfjd ', 5) FROMBSEMPMS;
SELECTSUBSTR ('cdnjfdjfjd ', 5, 2) FROMBSEMPMS;
　　
161. SQRT ()
Returns the square root of the parameter.
SELECTSQRT (36) FROMBSEMPMS;
　　
162. SPACE ()
Returns a string of the specified length, including spaces.
SELECTSPACE (10) FROMBSEMPMS;
　　
163. SECOND ()
Returns the second of a value.
SELECTSECOND ('18: 34: 32') FROMBSEMPMS;
　　
164. RTRIM ()
Removes spaces at the end of a string.
SELECTRTRIM ('comment') FROMBSEMPMS;
　　
165. ROUND (EXP1, EXP2)
Returns the rounded value starting at the position EXP2 on the right of the EXP1 decimal point.
SELECTROUND (2345.6789, 2) FROMBSEMPMS;
　　
166. REPLACE (EXP1, EXP2, EXP3)
Use EXP3 to replace all EXP2 in EXP1
SELECTCHAR (REPLACE ('romandd', 'ndd', 'ccb'), 10) FROMBSEMPMS;
　　
167. REPEAT (EXP1, EXP2)
Returns the string that EXP1 repeats EXP2.
SELECTCHAR (REPEAT ('repeat', 3), 21) FROMBSEMPMS;
　　
168. REAL ()
Returns the single-precision floating-point representation of a value.
SELECTREAL (10) FROMBSEMPMS;
　　
169. RAND ()
Returns a random floating point number between 0 and 1.
SELECTRAND () FROMBSEMPMS;
　　
170. POWER (EXP1, EXP2)
Returns the EXP2 power of EXP1.
SELECTPOWER (2, 5) FROMBSEMPMS;
　　
171. POSSTR (EXP1, EXP2)
Returns the position of EXP2 in EXP1.
SELECT ('abcdefgh', 'D') FROMBSEMPMS;
　　
172. NULLIF (EXP1, EXP2)
If EXP1 = EXP2, It is NULL; otherwise, it is EXP1.
173. NODENUMBER ()
Returns the Partition Number of the row.
SELECTNODENUMBER (EMP_NO) FROMBSEMPMS;
　　
174. MONTH ()
Returns the month of a value.
SELECTMONTH ('2014/1/20') FROMBSEMPMS;
　　
175. MOD (EXP1, EXP2)
Returns the remainder of EXP1 divided by EXP2.
SELECTMOD (20, 8) FROMBSEMPMS;
　　
176. MINUTE ()
Returns the minute of a value.
SELECTMINUTE ('18: 34: 23') FROMBSEMPMS;
　　
177. LTRIM ()
Removes spaces before a string.
SELECTLTRIM ('cddd') FROMBSEMPMS;
　　
178. HOUR ()
Returns the hour of a value.
SELECTHOUR ('18: 34: 23') FROMBSEMPMS;
　　
179. DOUBLE ()
If the parameter is a numeric expression, return the corresponding floating point number. If the parameter is a string expression, return the string expression of the number.
SELECTDOUBLE ('200') FROMBSEMPMS;
　　
180. EXP ()
Returns the exponential function of the parameter.
SELECTEXP (2) FROMBSEMPMS;
　　
181. FLOAT ()
Returns the floating point representation of a number.
SELECTFLOAT (789) FROMBSEMPMS;
　　
182. FLOOR ()
Returns the maximum integer that is less than or equal to the parameter.
SELECTFLOOR (88.93) FROMBSEMPMS;
　　
183. HEX ()
Returns a hexadecimal representation of the string value.
SELECTHEX (16) FROMBSEMPMS;