Question

just simple, I have such data, thousands of <MigratedData> elements, normally we load them using XMLLoader application, but this is a special case now, I have to update the database myself using the mapping:

<MigratedData>
<migrationNr>12123456</migrationNr> <idOldSystem>33398088801</idOldSystem>
</MigratedData>

<MigratedData>
<migrationNr>6767</migrationNr> <idOldSystem>21100077878</idOldSystem>
</MigratedData>

<MigratedData>
<migrationNr>767066</migrationNr> <idOldSystem>4545566767676</idOldSystem>
</MigratedData>

I will create such SQL Statements:

update table_1 t1 set t1.accountNr =
idOldSystem__Value__from_XML
where t1.id = migrationNr__from__XML ;

Does there exist a simple way to achieve this vis RegExp, preferrably in UltraEdit regular expression engine?

Answer 1

Why not to use simple xslt transformation on your xml and create update script as you specified?

Make your xml like this

<?xml version="1.0" encoding="utf-8" ?>
<root>
    <MigratedData>
        <migrationNr>12123456</migrationNr>
        <idOldSystem>33398088801</idOldSystem>
    </MigratedData>
    <MigratedData>
        <migrationNr>6767</migrationNr>
        <idOldSystem>21100077878</idOldSystem>
    </MigratedData>
    <MigratedData>
        <migrationNr>767066</migrationNr>
        <idOldSystem>4545566767676</idOldSystem>
    </MigratedData>
</root>

And apply XSLT like this:

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl"
>
    <xsl:output method="text" indent="yes"/>

    <xsl:template match="MigratedData">
update table_1 t1 set t1.accountNr = <xsl:value-of select="./idOldSystem"/>
where t1.id =<xsl:value-of select="./migrationNr"/> ;

    </xsl:template>

</xsl:stylesheet>

your result will be

update table_1 t1 set t1.accountNr = 33398088801
where t1.id =12123456 ;
update table_1 t1 set t1.accountNr = 21100077878
where t1.id =6767 ;
update table_1 t1 set t1.accountNr = 4545566767676
where t1.id =767066 ;