postgresql plus string

[Hell-Innocence]

PlusOp is +
Postgresql plus string is ||

[shalaga44]

you can create your own custom operator

    /**
     * Represents an PostgreSQL operator that adds [expr2] to [expr1] in.
     */
    class PlusPostgreSqlOp(
        /** The left-hand side operand. */
        expr1: Expression<String>,
        /** The right-hand side operand. */
        expr2: Expression<String>,
        /** The column type of this expression. */
        columnType: IColumnType
    ) : CustomOperator<String>("||", columnType, expr1, expr2)

    /** Adds the [t] value to this expression. */
    infix operator fun ExpressionWithColumnType<String>.plus(t: String): PlusPostgreSqlOp = PlusPostgreSqlOp(this, QueryParameter(t, columnType), columnType)

    /** Adds the [other] expression to this expression. */
    infix operator fun ExpressionWithColumnType<String>.plus(other: Expression<String>): PlusPostgreSqlOp = PlusPostgreSqlOp(this, other, columnType)