com.github.braisdom.objsql.sql.function

类 AnsiFunctions

java.lang.Object

com.github.braisdom.objsql.sql.function.AnsiFunctions

public class AnsiFunctions
extends Object

构造器概要

构造器

构造器和说明
AnsiFunctions()

方法概要

限定符和类型	方法和说明
static Expression	abs(Double literal)
static Expression	abs(Expression expression)
static Expression	abs(Float literal)
static Expression	abs(Integer literal)
static Expression	acos(Double literal)
static Expression	acos(Expression expression)
static Expression	acos(Float literal)
static Expression	acos(Integer literal)
static Expression	asin(Double literal)
static Expression	asin(Expression expression)
static Expression	asin(Float literal)
static Expression	asin(Integer literal)
static Expression	atan(Double literal)
static Expression	atan(Expression expression)
static Expression	atan(Float literal)
static Expression	atan(Integer literal)
static Expression	avg(Expression expression)
static Expression	ceil(Double literal)
static Expression	ceil(Expression expression)
static Expression	ceil(Float literal)
static Expression	concat(Expression... expressions)
static Expression	cos(Double literal)
static Expression	cos(Expression expression)
static Expression	cos(Float literal)
static Expression	cos(Integer literal)
static Expression	count() Returns the number of rows returned by the query.
static Expression	count(Expression expression) Returns number of input rows for which the value of expression is not null.
static Expression	countDistinct(Expression expression) Returns number of input rows for which the value of expression is not null and column value is distinct.
static Expression	currentDate()
static Expression	currentTimestamp()
static Expression	exp(Expression expression)
static Expression	exp(Float literal)
static Expression	exp(Integer literal)
static Expression	floor(Double literal)
static Expression	floor(Expression expression)
static Expression	floor(Float literal)
static Expression	groupConcat(Expression... expressions)
static Expression	left(Expression expression)
static Expression	left(String literal)
static Expression	length(Expression expression)
static Expression	length(String literal)
static Expression	ln(Expression expression)
static Expression	ln(Float literal)
static Expression	ln(Integer literal)
static Expression	log(Expression expression)
static Expression	log(Float literal)
static Expression	log(Integer literal)
static Expression	log10(Expression expression)
static Expression	log10(Float literal)
static Expression	log10(Integer literal)
static Expression	log2(Expression expression)
static Expression	log2(Float literal)
static Expression	log2(Integer literal)
static Expression	lower(Expression expression)
static Expression	lower(String literal)
static Expression	ltrim(Expression... expressions)
static Expression	max(Expression expression)
static Expression	min(Expression expression)
static Expression	mod(Expression expression1, Expression expression2)
static Expression	now()
static Expression	power(Expression expression, Integer power)
static Expression	power(Float literal, Integer power)
static Expression	power(Integer literal, Integer power)
static Expression	radians(Expression expression)
static Expression	radians(Float literal)
static Expression	radians(Integer literal)
static Expression	rtrim(Expression... expressions)
static Expression	sin(Double literal)
static Expression	sin(Expression expression)
static Expression	sin(Float literal)
static Expression	sin(Integer literal)
static CaseExpression	sqlCase()
static CaseExpression	sqlCase(Expression caseExpr)
static Expression	sqlIf(Expression expression, Expression expression1, Expression expression2)
static Expression	sqrt(Expression expression)
static Expression	sqrt(Float literal)
static Expression	sqrt(Integer literal)
static Expression	substr(Expression expression)
static Expression	subStr(Expression expression, int length)
static Expression	substr(String literal)
static Expression	sum(Expression expression)
static Expression	tan(Double literal)
static Expression	tan(Expression expression)
static Expression	tan(Float literal)
static Expression	tan(Integer literal)
static Expression	trim(Expression... expressions)
static Expression	upper(Expression expression)
static Expression	upper(String literal)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

AnsiFunctions

public AnsiFunctions()

方法详细资料

count

public static final Expression count()

Returns the number of rows returned by the query. You can use it as an aggregate or analytic function. Example: SELECT count(*)

返回:

the number of rows returned by the query

count

public static final Expression count(Expression expression)

Returns number of input rows for which the value of expression is not null. Example: SELECT count(column_name)

参数:

expression -

返回:

the number of rows where expression is not null

countDistinct

public static final Expression countDistinct(Expression expression)

Returns number of input rows for which the value of expression is not null and column value is distinct. Example: SELECT count(distinct column_name)

参数:

expression -

返回:

the number of rows where column value is distinct

now

public static final Expression now()

currentTimestamp

public static final Expression currentTimestamp()

currentDate

public static final Expression currentDate()

abs

public static final Expression abs(Expression expression)

abs

public static final Expression abs(Integer literal)

abs

public static final Expression abs(Float literal)

abs

public static final Expression abs(Double literal)

ceil

public static final Expression ceil(Expression expression)

ceil

public static final Expression ceil(Float literal)

ceil

public static final Expression ceil(Double literal)

floor

public static final Expression floor(Expression expression)

floor

public static final Expression floor(Float literal)

floor

public static final Expression floor(Double literal)

sin

public static final Expression sin(Expression expression)

sin

public static final Expression sin(Float literal)

sin

public static final Expression sin(Double literal)

sin

public static final Expression sin(Integer literal)

asin

public static final Expression asin(Expression expression)

asin

public static final Expression asin(Float literal)

asin

public static final Expression asin(Double literal)

asin

public static final Expression asin(Integer literal)

tan

public static final Expression tan(Expression expression)

tan

public static final Expression tan(Float literal)

tan

public static final Expression tan(Double literal)

tan

public static final Expression tan(Integer literal)

atan

public static final Expression atan(Expression expression)

atan

public static final Expression atan(Float literal)

atan

public static final Expression atan(Double literal)

atan

public static final Expression atan(Integer literal)

cos

public static final Expression cos(Expression expression)

cos

public static final Expression cos(Float literal)

cos

public static final Expression cos(Double literal)

cos

public static final Expression cos(Integer literal)

acos

public static final Expression acos(Expression expression)

acos

public static final Expression acos(Float literal)

acos

public static final Expression acos(Double literal)

acos

public static final Expression acos(Integer literal)

exp

public static final Expression exp(Integer literal)

exp

public static final Expression exp(Float literal)

exp

public static final Expression exp(Expression expression)

ln

public static final Expression ln(Integer literal)

ln

public static final Expression ln(Float literal)

ln

public static final Expression ln(Expression expression)

log

public static final Expression log(Integer literal)

log

public static final Expression log(Float literal)

log

public static final Expression log(Expression expression)

log2

public static final Expression log2(Integer literal)

log2

public static final Expression log2(Float literal)

log2

public static final Expression log2(Expression expression)

log10

public static final Expression log10(Integer literal)

log10

public static final Expression log10(Float literal)

log10

public static final Expression log10(Expression expression)

power

public static final Expression power(Integer literal,
                                     Integer power)

power

public static final Expression power(Float literal,
                                     Integer power)

power

public static final Expression power(Expression expression,
                                     Integer power)

radians

public static final Expression radians(Integer literal)

radians

public static final Expression radians(Float literal)

radians

public static final Expression radians(Expression expression)

sqrt

public static final Expression sqrt(Integer literal)

sqrt

public static final Expression sqrt(Float literal)

sqrt

public static final Expression sqrt(Expression expression)

mod

public static final Expression mod(Expression expression1,
                                   Expression expression2)

sum

public static final Expression sum(Expression expression)

avg

public static final Expression avg(Expression expression)

max

public static final Expression max(Expression expression)

min

public static final Expression min(Expression expression)

length

public static final Expression length(Expression expression)

length

public static final Expression length(String literal)

left

public static final Expression left(Expression expression)

left

public static final Expression left(String literal)

upper

public static final Expression upper(Expression expression)

upper

public static final Expression upper(String literal)

lower

public static final Expression lower(Expression expression)

lower

public static final Expression lower(String literal)

substr

public static final Expression substr(Expression expression)

substr

public static final Expression substr(String literal)

concat

public static final Expression concat(Expression... expressions)
                               throws SQLSyntaxException

抛出:

SQLSyntaxException

trim

public static final Expression trim(Expression... expressions)
                             throws SQLSyntaxException

抛出:

SQLSyntaxException

rtrim

public static final Expression rtrim(Expression... expressions)
                              throws SQLSyntaxException

抛出:

SQLSyntaxException

ltrim

public static final Expression ltrim(Expression... expressions)
                              throws SQLSyntaxException

抛出:

SQLSyntaxException

sqlIf

public static final Expression sqlIf(Expression expression,
                                     Expression expression1,
                                     Expression expression2)

sqlCase

public static final CaseExpression sqlCase()

sqlCase

public static final CaseExpression sqlCase(Expression caseExpr)

groupConcat

public static Expression groupConcat(Expression... expressions)

subStr

public static Expression subStr(Expression expression,
                                int length)