INSERTINTO`dlink_flink_document`VALUES(26,'function','内置函数','比较函数','value IS NULL','如果value为NULL,则返回TRUE 。','1.12',2,1,'2021-02-22 14:40:39','2021-03-10 11:57:51');
INSERTINTO`dlink_flink_document`VALUES(27,'function','内置函数','比较函数','value IS NOT NULL','如果value不为NULL,则返回TRUE 。','1.12',0,1,'2021-02-22 14:41:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(28,'function','内置函数','比较函数','value1 IS DISTINCT FROM value2','如果两个值不相等则返回TRUE。NULL值在这里被视为相同的值。','1.12',0,1,'2021-02-22 14:42:39','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(29,'function','内置函数','比较函数','value1 IS NOT DISTINCT FROM value2','如果两个值相等则返回TRUE。NULL值在这里被视为相同的值。','1.12',0,1,'2021-02-22 14:43:23','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(30,'function','内置函数','比较函数','value1 BETWEEN [ ASYMMETRIC | SYMMETRIC ] value2 AND value3','如果value1大于或等于value2和小于或等于value3 返回true','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(31,'function','内置函数','比较函数','value1 NOT BETWEEN [ ASYMMETRIC | SYMMETRIC ] value2 AND value3','如果value1小于value2或大于value3 返回true','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(33,'function','内置函数','比较函数','string1 NOT LIKE string2 [ ESCAPE char ]','如果STRING1不匹配模式STRING2,则返回TRUE ;如果STRING1或STRING2为NULL,则返回UNKNOWN 。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(34,'function','内置函数','比较函数','string1 SIMILAR TO string2 [ ESCAPE char ]','如果STRING1与SQL正则表达式STRING2匹配,则返回TRUE ;如果STRING1或STRING2为NULL,则返回UNKNOWN 。','1.12',0,1,'2021-02-22 14:44:26','2021-03-10 11:57:28');
INSERTINTO`dlink_flink_document`VALUES(35,'function','内置函数','比较函数','string1 NOT SIMILAR TO string2 [ ESCAPE char ]','如果STRING1与SQL正则表达式STRING2不匹配,则返回TRUE ;如果STRING1或STRING2为NULL,则返回UNKNOWN 。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(36,'function','内置函数','比较函数','value1 IN (value2 [, value3]* )','如果value1存在于给定列表(value2,value3,...)中,则返回TRUE 。\r\n\r\n当(value2,value3,...)包含NULL,如果可以找到该元素,则返回TRUE,否则返回UNKNOWN。\r\n\r\n如果value1为NULL,则始终返回UNKNOWN 。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(37,'function','内置函数','比较函数','value1 NOT IN (value2 [, value3]* )','如果value1不存在于给定列表(value2,value3,...)中,则返回TRUE 。\r\n\r\n当(value2,value3,...)包含NULL,如果可以找到该元素,则返回TRUE,否则返回UNKNOWN。\r\n\r\n如果value1为NULL,则始终返回UNKNOWN 。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(39,'function','内置函数','比较函数','value IN (sub-query)','如果value存在于子查询中,则返回TRUE。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(40,'function','内置函数','比较函数','value NOT IN (sub-query)','如果value不存在于子查询中,则返回TRUE。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(41,'function','内置函数','逻辑函数','boolean1 OR boolean2','如果BOOLEAN1为TRUE或BOOLEAN2为TRUE,则返回TRUE。支持三值逻辑。\r\n\r\n例如,true || Null(Types.BOOLEAN)返回TRUE。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(42,'function','内置函数','逻辑函数','boolean1 AND boolean2','如果BOOLEAN1和BOOLEAN2均为TRUE,则返回TRUE。支持三值逻辑。\r\n\r\n例如,true && Null(Types.BOOLEAN)返回未知。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(44,'function','内置函数','逻辑函数','boolean IS FALSE',' \r\n如果BOOLEAN为FALSE,则返回TRUE ;如果BOOLEAN为TRUE或UNKNOWN,则返回FALSE 。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(45,'function','内置函数','逻辑函数','boolean IS NOT FALSE','如果BOOLEAN为TRUE或UNKNOWN,则返回TRUE ;如果BOOLEAN为FALSE,则返回FALSE。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(46,'function','内置函数','逻辑函数','boolean IS TRUE','如果BOOLEAN为TRUE,则返回TRUE;如果BOOLEAN为FALSE或UNKNOWN,则返回FALSE 。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(47,'function','内置函数','逻辑函数','boolean IS NOT TRUE','如果BOOLEAN为FALSE或UNKNOWN,则返回TRUE ;如果BOOLEAN为TRUE,则返回FALSE 。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(48,'function','内置函数','逻辑函数','boolean IS UNKNOWN','如果BOOLEAN为UNKNOWN,则返回TRUE ;如果BOOLEAN为TRUE或FALSE,则返回FALSE 。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(49,'function','内置函数','逻辑函数','boolean IS NOT UNKNOWN','如果BOOLEAN为TRUE或FALSE,则返回TRUE ;如果BOOLEAN为UNKNOWN,则返回FALSE 。','1.12',0,1,'2021-02-22 14:44:26','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(98,'function','内置函数','字符串函数','POSITION(string1 IN string2)','返回STRING1在STRING2中第一次出现的位置(从1开始);\r\n\r\n如果在STRING2中找不到STRING1,则返回0 。','1.12',0,1,'2021-02-22 15:29:35','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(99,'function','内置函数','字符串函数','TRIM([ BOTH | LEADING | TRAILING ] string1 FROM string2)','返回一个字符串,该字符串从STRING中删除前导和/或结尾字符。','1.12',0,1,'2021-02-22 15:29:35','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(100,'function','内置函数','字符串函数','LTRIM(string)','返回一个字符串,该字符串从STRING除去左空格。\r\n\r\n例如,\" This is a test String.\".ltrim()返回“This is a test String.”。','1.12',0,1,'2021-02-22 15:29:35','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(101,'function','内置函数','字符串函数','RTRIM(string)','返回一个字符串,该字符串从STRING中删除正确的空格。\r\n\r\n例如,\"This is a test String. \".rtrim()返回“This is a test String.”。','1.12',0,1,'2021-02-22 15:29:35','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(102,'function','内置函数','字符串函数','REPEAT(string, integer)','返回一个字符串,该字符串重复基本STRING INT次。\r\n\r\n例如,\"This is a test String.\".repeat(2)返回“This is a test String.This is a test String.”。','1.12',0,1,'2021-02-22 15:29:35','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(104,'function','内置函数','字符串函数','OVERLAY(string1 PLACING string2 FROM integer1 [ FOR integer2 ])','从位置INT1返回一个字符串,该字符串将STRING1的INT2(默认为STRING2的长度)字符替换为STRING2','1.12',0,1,'2021-02-22 15:29:35','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(105,'function','内置函数','字符串函数','SUBSTRING(string FROM integer1 [ FOR integer2 ])','返回字符串STRING的子字符串,从位置INT1开始,长度为INT2(默认为结尾)。','1.12',0,1,'2021-02-22 15:29:35','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(138,'function','内置函数','时间函数','EXTRACT(timeintervalunit FROM temporal)','返回从时域的timeintervalunit部分提取的长值。','1.12',0,1,'2021-02-22 15:29:35','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(139,'function','内置函数','时间函数','YEAR(date)','返回SQL date日期的年份。等价于EXTRACT(YEAR FROM date)。','1.12',0,1,'2021-02-22 15:29:35','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(140,'function','内置函数','时间函数','QUARTER(date)','从SQL date date返回一年中的季度(1到4之间的整数)。相当于EXTRACT(从日期起四分之一)。','1.12',0,1,'2021-02-22 15:29:35','2021-02-22 15:28:47');
INSERTINTO`dlink_flink_document`VALUES(141,'function','内置函数','时间函数','MONTH(date)','返回SQL date date中的某月(1到12之间的整数)。等价于EXTRACT(MONTH FROM date)。','1.12',0,1,'2021-02-22 15:46:48','2021-02-22 15:47:21');
INSERTINTO`dlink_flink_document`VALUES(142,'function','内置函数','时间函数','WEEK(date)','从SQL date date返回一年中的某个星期(1到53之间的整数)。相当于EXTRACT(从日期开始的星期)。','1.12',0,1,'2021-02-22 15:46:48','2021-02-22 15:47:21');
INSERTINTO`dlink_flink_document`VALUES(143,'function','内置函数','时间函数','DAYOFYEAR(date)','返回SQL date date中的某一天(1到366之间的整数)。相当于EXTRACT(DOY FROM date)。','1.12',0,1,'2021-02-22 15:46:48','2021-02-22 15:47:21');
INSERTINTO`dlink_flink_document`VALUES(144,'function','内置函数','时间函数','DAYOFMONTH(date)','从SQL date date返回一个月的哪一天(1到31之间的整数)。相当于EXTRACT(DAY FROM date)。','1.12',0,1,'2021-02-22 15:46:48','2021-02-22 15:47:21');
INSERTINTO`dlink_flink_document`VALUES(149,'function','内置函数','时间函数','FLOOR(timepoint TO timeintervalunit)','返回一个将timepoint舍入到时间单位timeintervalunit的值。','1.12',0,1,'2021-02-22 15:46:48','2021-02-22 15:47:21');
INSERTINTO`dlink_flink_document`VALUES(150,'function','内置函数','时间函数','CEIL(timepoint TO timeintervalunit)','返回一个将timepoint舍入到时间单位timeintervalunit的值。','1.12',0,1,'2021-02-22 15:46:48','2021-02-22 15:47:21');
INSERTINTO`dlink_flink_document`VALUES(162,'function','内置函数','条件函数','CASE value\r\nWHEN value1_1 [, value1_2 ]* THEN result1\r\n[ WHEN value2_1 [, value2_2 ]* THEN result2 ]*\r\n[ ELSE resultZ ]\r\nEND','当第一个时间值包含在(valueX_1, valueX_2,…)中时,返回resultX。如果没有匹配的值,则返回resultZ,否则返回NULL。','1.12',0,1,'2021-02-22 15:46:48','2021-02-22 15:47:21');
INSERTINTO`dlink_flink_document`VALUES(163,'function','内置函数','条件函数','CASE\r\nWHEN condition1 THEN result1\r\n[ WHEN condition2 THEN result2 ]*\r\n[ ELSE resultZ ]\r\nEND','当第一个条件满足时返回resultX。当不满足任何条件时,如果提供了resultZ则返回resultZ,否则返回NULL。','1.12',0,1,'2021-02-22 15:46:48','2021-02-22 15:47:21');
INSERTINTO`dlink_flink_document`VALUES(170,'function','内置函数','类型转换函数功能','CAST(value AS type)','返回一个要转换为type类型的新值。','1.12',0,1,'2021-02-22 15:46:48','2021-02-22 15:47:21');