​流批一体数据交换 etl-engine 融合查询语法

SELECT 
	t_u.u_id,t_u.u_name,t_u.u_phone,
	t_o.o_id,t_o.o_price,t_o.o_number,t_o.o_money,t_o.o_writetime,
	t_p.p_id,t_p.p_name,t_p.p_contacts,t_p.p_desc  
FROM  t_u 
	inner JOIN  t_o  
	ON t_o.u_id=t_u.u_id 
	inner JOIN  t_p 
	ON t_o.p_id=t_p.p_id 
ORDER BY  
	INTEGER(SUBSTRING(t_u.u_id,3))  ASC 

SELECT
      [DISTINCT] field [, field ...]
      FROM table [, table ...]
      [WHERE condition]
      [GROUP BY field [, field ...] ]
      [HAVING condition]
   [ORDER BY order_item [, order_item ...] ]
   [LIMIT number_of_records [OFFSET number_of_records ] ]

+ - * / == < <= > >= <> != || IS BETWEEN IN LIKE NOT ANY AND OR INTERSECT UNION EXCEPT EXISTS

COALESCE(value [, value ...])
IF(condition, value1, value2)
IFNULL(value1, value2)
NULLIF(value1, value2)

ABS(number)
ACOS(number)
ACOSH(number)
ASIN(number)
ASINH(number)
ATAN(number)
ATAN2(number2, number1)
ATANH(number)
CBRT(number)
CEIL(number)
COS(number)
COSH(number)
EXP(number)
EXP2(number)
EXPM1(number)
FLOOR(number)
IS_INF(number [, sign])
IS_NAN(number)
LOG(number)
LOG10(number)
LOG1P(number)
LOG2(number)
LOGB(number)
POW(base, exponent)
ROUND(number)
SIN(number)
SINH(number)
SQRT(number)
TAN(number)
TANH(number)
BIN_TO_DEC(bin)
OCT_TO_DEC(oct)
HEX_TO_DEC(hex)
ENOTATION_TO_DEC(enotation)
BIN(integer)
OCT(integer)
HEX(integer)
ENOTATION(float)
NUMBER_FORMAT(number [, precision, decimalPoint, thousandsSeparator, decimalSeparator])
RAND(min, max)

NOW()
DATETIME_FORMAT(datetime, format)
YEAR(datetime)
MONTH(datetime)
DAY(datetime)
HOUR(datetime)
MINUTE(datetime)
SECOND(datetime)
MILLISECOND(datetime)
MICROSECOND(datetime)
NANOSECOND(datetime)
WEEKDAY(datetime)
UNIX_TIME(datetime)
UNIX_NANO_TIME(datetime)
DAY_OF_YEAR(datetime)
WEEK_OF_YEAR(datetime)
ADD_YEAR(datetime, duration)
ADD_MONTH(datetime, duration)
ADD_DAY(datetime, duration)
ADD_HOUR(datetime, duration)
ADD_MINUTE(datetime, duration)
ADD_SECOND(datetime, duration)
ADD_MILLI(datetime, duration)
ADD_MICRO(datetime, duration)
ADD_NANO(datetime, duration)
TRUNC_MONTH(datetime)
TRUNC_DAY(datetime)
TRUNC_TIME(datetime)
TRUNC_MINUTE(datetime)
TRUNC_SECOND(datetime)
TRUNC_MILLI(datetime)
TRUNC_MICRO(datetime)
TRUNC_NANO(datetime)
DATE_DIFF(datetime1, datetime2)
TIME_DIFF(datetime1, datetime2)
TIME_NANO_DIFF(datetime1, datetime2)
UTC(datetime)
MILLI_TO_DATETIME(unix_milliseconds)
NANO_TO_DATETIME(unix_nano_time)

TRIM(str)
LTRIM(str)
RTRIM(str)
UPPER(str)
LOWER(str)
BASE64_ENCODE(str)
BASE64_DECODE(str)
HEX_ENCODE(str)
HEX_DECODE(str)
LEN(str)
SUBSTRING(str, position [, len])
SUBSTR(str, position [, len])
INSTR(str, substr)
LIST_ELEM(str, sep, index)
REPLACE(str, old, new)
REGEXP_MATCH(str, regexp [, flags])
REGEXP_FIND(str, regexp [, flags])
TITLE_CASE(str)

MD5(str) 	
SHA1(str) 	
SHA256(str) 	
SHA512(str) 	
MD5_HMAC(str,key_str) 	
SHA1_HMAC(str,key_str)  
SHA256_HMAC(str,key_str)  	
SHA512_HMAC(str,key_str)  	

STRING(value)
INTEGER(value)
FLOAT(value)
DATETIME(value [, timezone])
BOOLEAN(value)

COUNT([DISTINCT] *)
MIN(expr)
MAX(expr)
SUM([DISTINCT] expr)
AVG([DISTINCT] expr)

  etl-engine使用手册(https://github.com/hw2499/etl-engine)
  etl-crontab使用手册(https://github.com/hw2499/etl-engine/wiki/etl-crontab%E8%B0%83%E5%BA%A6)
  嵌入脚本开发(https://github.com/hw2499/etl-engine/wiki/%E5%B5%8C%E5%85%A5%E8%84%9A%E6%9C%AC%E5%BC%80%E5%8F%91)
  etl-engine配置样例(https://github.com/hw2499/etl-engine/wiki/etl-engine%E4%BD%BF%E7%94%A8%E6%A0%B7%E4%BE%8B)