行转列(ROWS TO COLUMNS) 行转列是指将多行数据合并为一行数据的操作,在Oracle中,我们可以使用LISTAGG函数和GROUP BY子句实现行转列。 1、使用LISTAGG函数实现行转列 LISTAGG函数用于将多个行数据合并为一个字符串,其语法如下: LISTAGG(column, delimiter) WITHIN GROUP (ORDER BY column) column是要合并的列名,de...
SQL>select*fromrowtocol_test;YEARMONTHDEPT EXPENDITURE--- --- --- ---20091部门15000020092部门12000020092部门13000020101部门13500020092部门24000020093部门22500020102部门36000020092部门31500020092部门3100009rows selected SQL>executerow_to_col('rowtocol_test','year,month','dept','expenditure'); PL/SQLprocedur...
p_rows_column_real用于前述的第一种不限定列的转换; p_rows_column用于前述的第二种不限定列的转换。 CREATEORREPLACEPACKAGE pkg_dynamic_rows_columnASTYPE refcISREFCURSOR;PROCEDUREp_print_sql(p_txtVARCHAR2);FUNCTIONf_split_str(p_strVARCHAR2, p_divisionVARCHAR2, p_seqINT)RETURNVARCHAR2;PROCEDUREp_...
将行转置为列,其中转置的列将根据另一列进行更改 我想使用Oracle中的Pivot函数和/或SQL Server中的Pivot函数将行转置为列。我的用例与这个Efficiently convert rows to columns in sql server非常相似,但是我是按照特定的数据类型来组织数据的(如下所示的StringValue和NumericValueSmith | 123456 | --- 浏览7提问...
selectid,substr(str,2)strfromtestmodelreturnupdatedrowspartitionby(id)dimensionby(row_number()over(partitionbyidorderbyname)asrn)measures(cast(nameasvarchar2(20))asstr)rulesupsertiterate(3)until(presentv(str[iteration_number+2],1,0)=0)(str[0]=str[0]||','||str[iteration_number+1])order...
若.空行不需要转换,只需加一个where条件,WHERE COLUMN IS NOT NULL 即可。 2). MODEL 适用范围:10g及以后 SELECT id, cn, cv FROM t_col_row MODEL RETURN UPDATED ROWS PARTITION BY (ID) DIMENSION BY (0 AS n) MEASURES ('xx' AS cn,'yyy' AS cv,c1,c2,c3) ...
selectid,substr(str,2)strfromtestmodelreturnupdatedrowspartitionby(id)dimensionby(row_number()over(partitionbyidorderbyname)asrn)measures(cast(nameasvarchar2(20))asstr)rulesupsertiterate(3)until(presentv(str[iteration_number+2],1,0)=0)(str[0]=str[0]||','||str[iteration_number+1])order...
若.空行不需要转换,只需加一个where条件,WHERE COLUMN IS NOT NULL 即可。 2). MODEL 适用范围:10g及以后 SELECT id, cn, cv FROM t_col_row MODEL RETURN UPDATED ROWS PARTITION BY (ID) DIMENSION BY (0 AS n) MEASURES ('xx' AS cn,'yyy' AS cv,c1,c2,c3) ...
the subquery produces asingle XML string column. The XML string for each row holds aggregated datacorresponding to the implicitGROUPBYvalue of that row. TheXML string for each output row includes all pivot values found by the subquery,even if there are no corresponding rows in the input data....
Pivot rows using CASE If pivot isn't available in your database you'll have to do it the old-school way: manually. For each column you want to create in the final results you need to: Check whether the current value of the pivoting column equals the value you want If it does,...