[英]JOOQ sql generation for where in quotation seems inconsistent for multiple Objects
我一直在和JOOQ合作生成我的SQL,但是我在使用“in”子句时遇到了麻烦,我写了一个简单的测试来显示我的意思:
@Test
public void testWhereInBehaviorJOOQ() {
String expectedSingleObjectSQL = "select distinct \"Business Group\" \"Business_Group\" from \"SOME_TABLE\" where \"Business Group Process\" in ('SomeValue')";
String expectedMultipleObjectSQL = "select distinct \"Business Group\" \"Business_Group\" from \"SOME_TABLE\" where \"Business Group Process\" in ('SomeValue','AnotherValue')";
String actualSingleObjectSQL = generateSQLWithWhereInInline("SomeValue");
String actualTwoObjectSQL = generateSQLWithWhereInInline("SomeValue,AnotherValue");
String actualTwoObjectWithQuotesSQL = generateSQLWithWhereInInline("'SomeValue','AnotherValue'");
String actualTwoObjectWithMiddleQuotesSQL = generateSQLWithWhereInInline("SomeValue','AnotherValue");
LOGGER.info("JOOQ Generated query for single object \"someValue\" = {}",actualSingleObjectSQL );
LOGGER.info("JOOQ Generated query for two objects without single quotes \"someValue,AnotherValue\" = {}",actualTwoObjectSQL );
LOGGER.info("JOOQ Generated query for two objects with single quotes \"'someValue','AnotherValue'\" = {}",actualTwoObjectWithQuotesSQL);
LOGGER.info("JOOQ Generated query for two objects with single quotes only at the middle \"someValue','AnotherValue\" = {}",actualTwoObjectWithMiddleQuotesSQL );
Assert.assertEquals(expectedSingleObjectSQL,actualSingleObjectSQL);
Assert.assertEquals(expectedMultipleObjectSQL,actualTwoObjectSQL);
Assert.assertEquals(expectedMultipleObjectSQL,actualTwoObjectWithQuotesSQL);
Assert.assertEquals(expectedMultipleObjectSQL,actualTwoObjectWithMiddleQuotesSQL);
}
private String generateSQLWithWhereInInline(String businessGroupProcess) {
DSLContext create = DSL.using(SQLDialect.ORACLE);
return create.
selectDistinct(
DSL.fieldByName("Business Group").as("Business_Group"))
.from(DSL.tableByName("SOME_TABLE")).where(DSL.fieldByName("Business Group Process").in(DSL.inline(businessGroupProcess))).getSQL();
}
但生成的值是:
JOOQ生成单个对象“someValue”=的查询
select distinct "Business Group" "Business_Group"
from "SOME_TABLE" where "Business Group Process" in ('SomeValue')
JOOQ生成的两个对象的查询没有单引号“someValue,AnotherValue”=
select distinct "Business Group" "Business_Group"
from "SOME_TABLE" where "Business Group Process" in ('SomeValue,AnotherValue')
JOOQ使用单引号“'someValue','AnotherValue'”生成两个对象的查询
select distinct "Business Group" "Business_Group"
from "SOME_TABLE"
where "Business Group Process" in ('''SomeValue'',''AnotherValue''')
JOOQ仅在中间“someValue”,“AnotherValue”=中间使用单引号生成两个对象的查询
select distinct "Business Group" "Business_Group"
from "SOME_TABLE"
where "Business Group Process" in ('SomeValue'',''AnotherValue')
因此,当只有一个对象时,它可以正常工作,对于两个它只会在开头和结尾添加引号,如果我在它们添加引号之前将引号添加到开头,结尾和每个对象,如果我尝试“欺骗“它通过在中间添加引号,希望它会尝试将变量包装在引号中,一切都得到报价。 空间似乎没有帮助。
有没有人遇到过这个? 我想知道我是在说错了还是错了。
jOOQ在这里按预期工作。 Field.in(...)
方法通过varargs参数接受IN谓词的多个值。 因此,如果要表示具有多个值的谓词,则必须为该方法提供多个值。
因此,您的实用方法应为:
// I'm assuming this static import
import static org.jooq.impl.DSL.*;
private String generateSQLWithWhereInInline(String... businessGroupProcesses) {
Field<String>[] fields = new Field[businessGroupProcesses.length];
for (int i = 0; i < businessGroupProcesses.length; i++)
fields[i] = inline(businessGroupProcesses[i]);
return DSL.using(SQLDialect.ORACLE)
.selectDistinct(
field(name("Business Group")).as("Business_Group"))
.from(table(name("SOME_TABLE")))
.where(field(name("Business Group Process")).in(fields))
.getSQL();
}
一种更简单的方法可能是为DSLContext提供一个设置,告诉它直接内联所有绑定值。 这在此处记录:
http://www.jooq.org/doc/latest/manual/sql-building/dsl-context/custom-settings
您的方法将为:
private String generateSQLWithWhereInInline(String... businessGroupProcesses) {
Settings settings = new Settings()
.withStatementType(StatementType.STATIC_STATEMENT);
return DSL.using(SQLDialect.ORACLE, settings);
.selectDistinct(
field(name("Business Group")).as("Business_Group"))
.from(table(name("SOME_TABLE")))
.where(field(name("Business Group Process"))
.in(businessGroupProcesses))
.getSQL();
}
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